Textiles: fluid treating apparatus – Machines – Combined
Patent
1998-04-02
1999-09-14
Coe, Philip R.
Textiles: fluid treating apparatus
Machines
Combined
68184, D06F 1702
Patent
active
059504587
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a washing and cleaning device.
Dirt is generally eliminated in material to be cleaned by mechanical processes in a liquid provided with solvent. The success of the cleaning operation is often dependent on the quality and intensity of the mechanical process and the composition of the solvent, whereby a not inconsiderable and wearing load occurs in the material to be cleaned. Reducing the mechanical process diminishes the washing and cleaning result unless stronger solvents are added.
Some manufacturers offer washer inserts together with the detergent, which are filled with the required amount of detergent and, together with the material to be cleaned, are plugged into the drum of a conventional washing machine. In this case, the detergent is not added in metered amounts via the metering compartments of the washing machine. Detergent is dissolved in the course of the washing process, and insoluble detergent is retained in the washer insert. However, as the washing drum is rotating, the washer insert together with the material to be cleaned is moved as well, which supports and improves the solubility of the detergent.
The invention has an object of creating a washing and cleaning device which largely protects the cleaning stock against mechanical stress and requires less or no solvent.
As opposed to the known washer insert, which is moved along only passively by the motion of the drum, the washing and cleaning device as defined by the invention is itself an active element. Therefore, it can be used in common vessels such as buckets, sinks, bathtubs and washtubs, or also supplementarily in conventional washing machines, where the washing and cleaning device is immersed in the washing liquid in about the center between the cleaning stock.
The washing liquid present in the interior of the housing unit is swept along by the rotary motion of the rotatable element within the housing unit and put into rotation as well. Centrifugal forces act on the rotating washing liquid, causing a radial exit of flow through the liquid outlet holes on the jacket surface of the rotating element and the housing unit. Liquid inlet holes in the center or on the face side of the rotary motion at the same time permit after-flow of washing liquid.
The washing and cleaning device operates in a way similar to a circulation pump in that the washing liquid in the vessel is put into a rotating flow, which is first directed radially outwardly by the liquid outlet holes on the surface of the housing unit, flows through the cleaning stock, dragging along dirt particles, subsequently hits the wall of the vessel, and then returns axially on the surface and on the bottom to the center and flows back into the housing unit through the liquid inlet holes.
With the washing and cleaning device as defined by the invention, the cleaning stock remains substantially quietly resting in the washing liquid because the housing unit is not moved. The cleaning stock is therefore significantly more carefully treated than with conventional moving drums. However, the washing liquid itself is forced through the cleaning stock at a high flow rate, which improves the detachment of dirt particles. Due to the development of eddying of the washing liquid, oxygen is carried along at the same time from the environment and absorbed, supporting the cleaning effect.
Furthermore, the constant direction of flow permits dirt particles to completely exit from the cleaning stock, so that such particles will not only flow back and forth between different layers of fabric. Moreover, it was observed that the flow rate forces dirt particles against the walls of the vessel, where they stick to the wall, or that dirt particles lump together, forming larger particles, and deposit in less strongly agitated zones of the washing vessel. As such particles will no longer contaminate the washing liquid, the potential of the latter for absorbing more dirt particles from the cleaning stock is increased.
According to a further development of the invention, several rotatabl
REFERENCES:
patent: 2529001 (1950-11-01), Casse
patent: 4025427 (1977-05-01), Lueb
Pantent Abstracts of Japan vol. 095, No. 010, Nov. 30, 1995 JP07171293A.
Braun Hans-Peter
Meyer Dieter
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