초록 ▼

A fluid treatment device includes an AC power source connected to first, second and third conductors. A electromagnetic field generating device is positioned adjacent to a fluid conduit, electrically connected to the first and third conductors to form a first circuit. A second electromagnetic field

A fluid treatment device includes an AC power source connected to first, second and third conductors. A electromagnetic field generating device is positioned adjacent to a fluid conduit, electrically connected to the first and third conductors to form a first circuit. A second electromagnetic field generating device is positioned adjacent to a second fluid conduit, electrically connected to the second and third electrical conductors to form a second circuit. A circuit element in the first circuit initiates a high frequency electromagnetic field at said first electromagnetic field generating device during a first half of the AC wave form in the first circuit, and a circuit element in the second circuit initiates a high frequency electromagnetic field at said first electromagnetic field generating device during a second half of the AC wave form in the second circuit.

대표청구항 ▼

We claim: 1. A fluid treatment device for being connected to a source of AC power having an AC wave form, comprising: a first electromagnetic field generating device in a first circuit positioned adjacent a first fluid conduit, a second electromagnetic field generating device in a second circuit po

We claim: 1. A fluid treatment device for being connected to a source of AC power having an AC wave form, comprising: a first electromagnetic field generating device in a first circuit positioned adjacent a first fluid conduit, a second electromagnetic field generating device in a second circuit positioned adjacent a second fluid conduit, a circuit element in said first circuit for initiating a high frequency electromagnetic field at said first electromagnetic field generating device resulting from a first half of the AC wave form, and a circuit element in said second circuit for initiating a high frequency electromagnetic field at said second electromagnetic field generating device resulting from a second half of the AC wave form. 2. A fluid treatment device according to claim 1, wherein said second fluid conduit is said first fluid conduit. 3. A fluid treatment device according to claim 2, wherein said first electromagnetic field generating device is spaced from said second electromagnetic field generating device on said first fluid conduit. 4. A fluid treatment device according to claim 2, wherein said first electromagnetic field generating device abuts said second electromagnetic field generating device on said first fluid conduit. 5. A fluid treatment device according to claim 2, wherein said second electromagnetic field generating device at least partially overlaps said first electromagnetic field generating device on said first fluid conduit. 6. A fluid treatment device according to claim 2, wherein said first electromagnetic field generating device generates a first electromagnetic field within said conduit in a first direction and said second electromagnetic field generating device generates a second electromagnetic field in a second direction within said conduit opposite said first direction. 7. A fluid treatment device according to claim 2, wherein said first electromagnetic field generating device generates a first electromagnetic field within said conduit in a first direction and said second electromagnetic field generating device generates a second electromagnetic field within said conduit also in said first direction. 8. A fluid treatment device according to claim 1, wherein said first fluid conduit and said second fluid conduit are separate and distinct from one another. 9. A fluid treatment device according to claim 1, wherein said first and second circuit elements include a switch element. 10. A fluid treatment device according to claim 1, wherein said first and second circuits respectively also include a capacitor connected in parallel with said first and second circuit elements. 11. A fluid treatment device according to claim 1, wherein said first electromagnetic field generating device is formed in at least a first part and a second part on said first fluid conduit. 12. A fluid treatment device according to claim 11, wherein said first part is spaced from said second part on said first fluid conduit. 13. A fluid treatment device according to claim 11, wherein said first part of said first electromagnetic field generating device generates a first electromagnetic field within said conduit in a first direction and said second part of said first electromagnetic field generating device generates a second electromagnetic field within said conduit in a second direction opposite said first direction. 14. A fluid treatment device according to claim 11, wherein said first part of said first electromagnetic field generating device generates a first electromagnetic field within said conduit in a first direction and said second part of said first electromagnetic field generating device generates a second electromagnetic field within said conduit also in said first direction. 15. A fluid treatment device according to claim 11, wherein said second conduit is said first conduit and said second electromagnetic field generating device is formed in at least a first part and a second part on said first fluid conduit. 16. A fluid treatment device according to claim 15, wherein said first part of said second electromagnetic field generating device is spaced from said second part of said second electromagnetic field generating device on said first fluid conduit. 17. A fluid treatment device according to claim 15, wherein said first part of said second electromagnetic field generating device generates a first electromagnetic field within said conduit in a first direction and said second part of said second electromagnetic field generating device generates a second electromagnetic field within said conduit in a second direction opposite said first direction. 18. A fluid treatment device according to claim 15, wherein said first part of said second electromagnetic field generating device generates a first electromagnetic field within said conduit in a first direction and said second part of said second electromagnetic field generating device generates a second electromagnetic field within said conduit also in said first direction. 19. A fluid treatment device according to claim 15, wherein said first and second parts of said second electromagnetic field generating device are arranged at said first fluid conduit in a space between said first and second parts of said first electromagnetic field generating device. 20. A fluid treatment device according to claim 1, wherein said first electromagnetic field generating device comprises a coiled electrical conductor. 21. A fluid treatment device according to claim 1, wherein said circuit element in said first circuit comprises a circuit element that allows passage of current in a first direction in said first circuit and substantially prevents passage of current in a second direction in said first circuit. 22. A fluid treatment device according to claim 1, including: a transformer connected to said source of AC power at a primary transformer coil to provide an alternating current flow at a secondary transformer coil; a first electrical conductor electrically connected to a first point on said secondary coil, a second electrical conductor electrically connected to a second point on said secondary coil spaced from said first point, a third electrical conductor electrically connected to a third point on said secondary coil intermediate said first and second points, said first electromagnetic field generating device being electrically connected to said first and third electrical conductors to form said first circuit, said second electromagnetic field generating device being electrically connected to said second and third electrical conductors to form said second circuit. 23. A fluid treatment device for being connected to a source of AC power having a maximum voltage, comprising: a transformer connected to said source of AC power at a primary transformer coil to provide an alternating current flow at a secondary transformer coil, a first electrical conductor electrically connected to a first point on said secondary coil, a second electrical conductor electrically connected to a second point on said secondary coil spaced from said first point, a third electrical conductor electrically connected to a third point on said secondary coil intermediate said first and second points, a first coil wrapped around a first fluid conduit and being electrically connected to said first and third electrical conductors to form a first circuit, a second coil wrapped around a second fluid conduit and being electrically connected to said second and third electrical conductors to form a second circuit, a first circuit element in said first circuit to allow passage of current in a first direction in said circuit and to substantially prevent passage of current in a second direction in said circuit, and a second circuit element in said second circuit to allow passage of current in said second direction in said circuit and to substantially prevent passage of current in said first direction in said circuit. 24. A fluid treatment device according to claim 22, wherein said first, second and third points are arranged such that substantially identical current flow is provided in said first and second circuits. 25. A fluid treatment device for being connected to a source of AC power having a maximum voltage, comprising: a transformer connected to said source of AC power at a primary transformer coil to provide an alternating current flow at a secondary transformer coil, a first electrical conductor electrically connected to a first point on said secondary coil, a second electrical conductor electrically connected to a second point on said secondary coil, a third electrical conductor electrically connected to a third point on said secondary coil spaced from said first and second points, a first electromagnetic field generating device positioned adjacent a first fluid conduit and being electrically connected to said first and third electrical conductors to form a first circuit, a second electrical field generating device positioned adjacent a second fluid conduit and being electrically connected to said second and third electrical conductors to form a second circuit, a first circuit element in said first circuit to allow passage of current in a first direction in said circuit and to substantially prevent passage of current in a second direction in said circuit, and a second circuit element in said second circuit to allow passage of current in said second direction in said circuit and to substantially prevent passage of current in said first direction in said circuit. 26. A fluid treatment device according to claim 25, wherein said first and second points are identical. 27. A fluid treatment device according to claim 25, wherein said first and second points are spaced from one another and said third point is located intermediate said first and second points. 28. A fluid treatment device according to claim 25, wherein said first part of said first coil and said first part of said second coil generate electromagnetic fields within said conduit in a first direction and said second part of said first coil and said second part of said second coil generate electromagnetic fields within said conduit in a second direction opposite to said first direction. 29. A fluid treatment device according to claim 25, wherein said first electromagnetic field generating device and said second electromagnetic field generating device respectively comprise a first coil wrapped around said first fluid conduit and a second coil wrapped around said second fluid conduit.