Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1978-09-25
1982-01-05
Moore, Christopher K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
219 1051, A47L 1134
Patent
active
043086365
ABSTRACT:
Method and apparatus for heating a fluid, such as water, for any of several purposes, such as for use with carpet cleaning apparatus; and charcterized by supplying electrical current periodically to the primary of a conductive coil, thereby building and collapsing a field about a shorted electrically conductive secondary of the coil. The shorted secondary is a hollow conductor that is heated by high current flow. The heat is transferred to a fluid flowing through the hot, shorted secondary. In a specific aspect of the embodiment, a frame including spray nozzles, vacuum nozzles and the like has the apparatus for heating water connected into it such that heated water is supplied, to effect much more efficacious cleaning of carpets or similar floor surfaces. Also disclosed are specific details and preferred embodiments that have been constructed to date; particularly, the details of the apparatus in which the primary and the secondary coils are closely adjacent each other such that the I.sup.2 R heating that occurs in both the primary and secondary due to the building and collapsing of the field contribute to heating of the fluid passed through the fluid passageway in the secondary with the primary and secondary overwound on the same leg of the core, more of the flux that builds and collapses passes through both the primary and secondary so there is more heating of the fluid passing through the secondary. The hollow conductor of the secondary is deliberately shorted with a continuous weld so that there are an infinite number of elemental shorting bars whose I.sup.2 R losses produce greater heating of the fluid passed through the secondary.
REFERENCES:
patent: 1402021 (1922-01-01), Snelling
patent: 1402873 (1922-01-01), Ledwinka
patent: 1563296 (1979-11-01), Scarborough
patent: 2616022 (1952-10-01), Arnaud
patent: 3133182 (1964-05-01), Landmann
patent: 3215416 (1965-11-01), Liben
patent: 3439374 (1969-04-01), Wisdom
patent: 3518470 (1970-06-01), Dillarstone
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