Surfaces pickup various undesired contaminants. One type is that which settles from impurities in the air. Another is biological aqueous growth, such as algae, fungus, or mold. These undesired contaminants can be removed with brushing, scrubbing, high pressure liquid, and/or chemical solvents. Removing the contaminants often needs mechanical power such as brushes or high speed sprays. Remaining, or used water, exits from the vicinity of the head.
Typical jet cleaners use straight on streams, to flush debris away from the surface. The individual jets do not add their forces. The residual water will, in an aquarium, stir up much sedimentary debris, and leave the water after the cleaning more turbid than before.
A system that cleans boat bottoms, or aquarium windows, and also stimulates the skin, yet does not penetrate or break the skin. The cleaning or skin stimulation is accomplished by high speed high pressure liquid flow, through multiple orifices, with all or most orifices positioned at preselected angles, rather than simply perpendicular or parallel. The nozzles are set to strike at an angle and liquid strikes the surface tangentially. The angle strike improves the cleaning effectiveness, and better carries away the contamination.
Adjoining nozzles are arranged so that their streams add power to one another. By arranging the nozzles pointing in a circular direction, a circular flow of water is established. The multiple nozzles sum their forces so that more effective cleaning is obtained.
The angle positioning emits water or fluids in an angular manner to cause additive rates of flow, in a circle or straight line. The angle is greater than zero degrees, and less than ninety degrees, and is typically 45 degrees. The liquid strikes with a glancing flow, causing stimulation and scrubbing with out injuring the skin or the surface.
An inner shroud around the head briefly captures much of the water. The water exits the shroud either under or through side orifices. The water is largely caught by a second outer shroud and returned to the pump. The return water flow creates a suction force on the head towards the surface to be cleaned and there is consequently less need for the operator to push the head toward the surface. Filters before and after the pump remove the debris from the water and make the ambient water cleaner.
It is the purpose of this invention to remove contaminants quickly and completely from a surface with minimum effort. The device is suited to hot tubs, private or public, for refreshing bathing and for speedier recovery from some muscle problems, and for removing algae and contamination from an underwater surface. Filters in the water flow catch much of the debris and thus clean the waste water.
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Not shown are additional plate supporting crews 21C and 21D, perpendicularly placed with regard to supporting crews 21A and 21B
Surrounding the bell 16 is another larger bell 24, also referred to as the outer shroud 24. Much of the exit water is picked up by bell 24 and exits via flexible pipe 26. There is suction on bellows 24. Flexible pipe 26 returns the water to the input of pump 12. Debris is constantly removed from the circulating system by one or both filters 30 and 32.
Bell 16 controls the flow towards the surface 22 and bell 24 controls the flow back to the pump 12. Bells 16 and 24 are given flexible perimeters so that they also act as bellows, and can thus conform to tilt and irregularities on the surface 22, to better confine the flow, and to minimize irregular and undesired water flow, and to minimize any tendency to spread debris throughout the main body of the water. The surface 22 may be the sides and bottom of a boat, or may be the sides of an aquarium, or may be a deck of any kind which needs cleaning, or the surface 22 may be the skin or fur of an animal or human skin which needs stimulation and cleaning.
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The bellows 16 and 24 are made with adjustable sides, to guide the water, regardless of irregularities in the surface. The bellows in general conform to the surface 22. The return flow to pump 12 through bellows 24 is by suction, and this suction aids in providing pressure of the orifice plate 18 against the surface 22.
In
The skirt of bell 16 urges the water to stay confined and to pick up rotary speed. The speed adds up under each jet and thus ends up with better scrubbing of the surface 22 than is the case when just a direct-on orifice is used. Similarly, the glancing action of a tilted orifice is kinder to the human skin than is direct impact, and is less likely to tear the skin.
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Variations not Shown:
The water return area can be in the center of the spray head, instead of around the perimeter of the nozzle area. The bristle nozzles could be arranged to rotate CW at the center and CCW at the perimeter, thus avoiding the torque on the head produced by all pointing in the same direction of rotation. The nozzles could be arranged to all point in the same direction, rather than in a rotary manner. The exhaust waste could be sent to a disposal area, and not recirculated around, thus keeping the water less loaded with debris or algae.