초록 ▼

In an apparatus for treating liquid with electromagnetic flux, one or more coils surrounding a liquid conducting pipe are excited by a switching circuit including a triode switch turned on and off in response to the voltage applied to the coil or coils in such a way that during each operative half c

In an apparatus for treating liquid with electromagnetic flux, one or more coils surrounding a liquid conducting pipe are excited by a switching circuit including a triode switch turned on and off in response to the voltage applied to the coil or coils in such a way that during each operative half cycle of the supply voltage a current is conducted through the coils during an initial portion of the half cycle and then at a substantial time before the end of the half cycle, the switch is turned to an open condition causing the current built up in the coils to be taken up by a series resonant circuit, formed by the inductance of the coil or coils an associated given capacitance and the power supply, to produce a ringing current in and a ringing voltage across each coil and consequent ringing electromagnetic flux in the liquid passing through the pipe. The apparatus may have either a half wave or full wave mode of operation. When two or more coils are used, preferably the fluxes produced by at least two of the coils move in opposite directions through the liquid.

대표청구항 ▼

[ We claim:] [1.] An apparatus for treating flowing liquid with electromagnetic flux and to be powered by a source of alternating current electrical power wherein a set of half cycles of positive voltage alternate with a set of half cycles of negative voltage, said apparatus comprising:a pipe for co

[ We claim:] [1.] An apparatus for treating flowing liquid with electromagnetic flux and to be powered by a source of alternating current electrical power wherein a set of half cycles of positive voltage alternate with a set of half cycles of negative voltage, said apparatus comprising:a pipe for conducting a flow of liquid,at least one electrical coil surrounding said pipe,means providing a given capacitance,a first switching circuit including a triode switch having first, second, and third terminals with said first and second terminals being switchable between open and closed conditions relative to one another in response to electrical signals applied to said third terminal, andconnecting means for connecting said coil, capacitance and first switching circuit to one another and to said power source such that during each half cycle of at least one of said two sets of half cycles, current due to said source power flows through said coil during an initial portion of the half cycle because of said first and second terminals of said switch being in a closed condition relative to one another and such that at a significant amount of time in advance of the completion of said half cycle, while a substantial amount of current is flowing through said triode switch, said first and second terminals of said switch are switched to their open condition,said connecting means further being such that when said first and second terminals of said switch are in their open condition relative to one another said coil and capacitance form part of a series resonant circuit so that immediately following said switching of said first and second terminals of said switch from their closed to their open condition, a ringing current appears in said coil. [2.] An apparatus as defined in claim 1, wherein:said at least one coil is one of a plurality of coils wound around said pipe,said connecting means being such that when said first and second terminals of said switch are in their closed condition current due to said source power flows through all of said coils and so that when said first and second terminals are in their open condition all of said coils are in said resonant circuit. [3.] An apparatus as defined in claim 2, wherein:at least two of said coils are wound in close association with one another on the same longitudinal portion of said pipe so as to create a winding capacitance forming at least a part of said given capacitance. [6.] An apparatus as defined in claim 1 further characterized by:a control circuit responsive to the voltage of said power source for supplying electrical signals to said third terminal of said switch for controlling the switching of said first and second terminals between their open and closed conditions.