Electrode apparatus for stray field radio frequency heating
First Claim
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1. An electrode apparatus for generating stray fields, comprising:
- a first element; and
a second element, whereinthe first element comprises an elongated member and an elongated electrode, the elongated electrode having one end connected to the elongated member,the second element comprises a base and an electrode plate that is connected to and extends outwardly from a surface of the base,the first element and the second element are positioned such that (a) the elongated electrode is spaced from a top portion of a face of the electrode plate by a distance of D1, which face faces the elongated electrode, and (b) a bottom surface of the elongated electrode is not directly over a distal side of the electrode plate, but is directly over at least a portion of the base, andthe difference between the length of the elongated electrode and the length of the electrode plate is greater than or equal to about 4D1.
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Abstract
An RF heating system for generating precision stray RF fields that can be used to heat materials. The RF heating system includes an RF power supply for generating RF signals and an electrode apparatus that is coupled to the RF power supply. An electrode apparatus according to the present invention has many advantages over existing electrode apparatuses. For example, the electrode apparatus is easier to manufacture, easier to duplicate, easier to control the manufacturing tolerances on the electrode system, and easier to correctly place and design the resulting RF stray field.
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Citations
53 Claims
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1. An electrode apparatus for generating stray fields, comprising:
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a first element; and a second element, wherein the first element comprises an elongated member and an elongated electrode, the elongated electrode having one end connected to the elongated member, the second element comprises a base and an electrode plate that is connected to and extends outwardly from a surface of the base, the first element and the second element are positioned such that (a) the elongated electrode is spaced from a top portion of a face of the electrode plate by a distance of D1, which face faces the elongated electrode, and (b) a bottom surface of the elongated electrode is not directly over a distal side of the electrode plate, but is directly over at least a portion of the base, and the difference between the length of the elongated electrode and the length of the electrode plate is greater than or equal to about 4D1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An electrode apparatus for generating stray fields, comprising:
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a first element; a second element; and a non-electrically conducting solid body, wherein the first element comprises an elongated member and an elongated electrode, the elongated electrode having one end connected to the elongated member, the second element comprises a base and an electrode plate that is connected to and extends outwardly from a surface of the base, the first element and the second element are positioned such that (a) the elongated electrode is spaced from a top portion of a face of the electrode plate, which face faces the elongated electrode, and (b) a bottom surface of the elongated electrode is not directly over a distal side of the electrode plate, but is directly over at least a portion of the base, the non-electrically conducting solid body is placed between the first element and the second element, and the non-electrically conducting solid body comprises a first channel for receiving the elongated electrode and a second channel for receiving the distal side of the electrode plate. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. An electrode apparatus for generating stray fields, comprising:
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a first element; and a second element, wherein the first element comprises (a) a first elongated member, (b) a second elongated member parallel with and spaced apart from the first elongated member, and (c) a plurality of spaced apart elongated electrodes, each of the plurality of elongated electrodes having a first end fixed to the first elongated member and a second end fixed to the second elongated member, and each of the plurality of elongated electrodes being substantially straight, the second element comprises a base and a plurality of electrode plates, each of the plurality of electrode plates being fixed to and extending outwardly from a surface of the base, and the first element and the second element are positioned such that (a) each of said plurality of elongated electrodes is spaced from a top portion of a face of one of said plurality of electrode plates, which face faces the elongated electrode, and (b) a bottom surface of each of said plurality of elongated electrodes is not directly over any one of said plurality of electrode plates, but is directly over at least a portion of the base. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. An electrode apparatus for generating stray fields, comprising:
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a first element; a second element; and a non-electrically conducting solid body, wherein the first element comprises an elongated member and an elongated electrode, the elongated electrode having one end connected to the elongated member, the second element comprises a base and an electrode plate that is connected to and extends outwardly from a surface of the base, the first element and the second element are positioned such that (a) the elongated electrode is spaced from a top portion of a face of the electrode plate, which face faces the elongated electrode, and (b) a bottom surface of the elongated electrode is not directly over a distal side of the electrode plate, but is directly over at least a portion of the base, and the non-electrically conducting solid body has a channel receiving the base of the second element. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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Specification