CN2896775Y - Radio-frequency linear-focusing type inductive heating device - Google Patents
Radio-frequency linear-focusing type inductive heating device Download PDFInfo
- Publication number
- CN2896775Y CN2896775Y CN 200620023417 CN200620023417U CN2896775Y CN 2896775 Y CN2896775 Y CN 2896775Y CN 200620023417 CN200620023417 CN 200620023417 CN 200620023417 U CN200620023417 U CN 200620023417U CN 2896775 Y CN2896775 Y CN 2896775Y
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- shaped cavity
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Abstract
The utility model relates to the structural improvement of RF focusing type induction heating devices, wherein the improved structure comprises a RF power supply, a power matcher orderly connected with the output end of the RF power supply and a focused resonator, wherein the key improvement lies in that the focused resonator is composed of two flat U cavity leads in axisymmetric arrangement and the paraphrase feeder is connected between the two flat U cavity leads in axisymmetric arrangement while connected with output end of the power matcher.
Description
Technical field
The utility model relates to the improvement to the linear focusing induction heating equipment of radio frequency.
Background technology
Through studying for many years, testing, utilize radio-frequency power supply to realize the direct induction type heating of the conductive fibers of carbon fibre tow one class, and realized graphited processing for the contactless heater of the energy.The power match device that this device is connected successively by radio-frequency power supply, with the output of radio-frequency power supply and focus on resonant cavity and form.Crucial structure is to realize the coaxial conjugation resonator design of linear focusing.This technology has determined the realization (with reference to No. 98115308.9 patent documentations) of radio frequency method Carbin fibre graphitization process.In this process treatment process, the carbon fibre that has loaded axial drafting force is passed in the quartz tube reactor that is arranged on the linear electromagnetic field, this quartz tube reactor is passed from the coaxial conjugation resonant cavity that can realize linear focusing, induced current by linear electromagnetic field of high strength and carbon fiber makes carbon fiber bundle be heated to 2800 ℃ quickly and evenly, has realized the graphitization processing of high-quality carbon fiber.
Process along with suitability for industrialized production, the power demand of the production equipment of the linear focusing induction heating equipment of radio frequency strengthens, under the condition of the time lengthening of serialization work, the stability requirement of quartz tube reactor must add the water-cooled jacket structure, what the diameter of inner wire can not be done in the coaxial conjugation resonator design is too big, has become contradiction with the improvement shape suitability for industrialized production of quartz tube reactor.
Summary of the invention
The purpose of this utility model is the linear focusing induction heating equipment of a kind of new-type radio frequency of design, makes its use that can match with the water-cooling type quartz tube reactor, realizes the needs that industrialization is produced.
The resonator design that has adopted based on the two-wire system transmission theory of the present utility model, concrete structure is still by radio-frequency power supply, forms with power match device and focusing resonant cavity that the output of radio-frequency power supply is connected successively, crucial improvement is that this focusing resonant cavity is that two flat U-shaped cavity-like conductors by the axial symmetry setting constitute, the paraphase feeder line be connected symmetrically arranged two flat U-shaped cavity-like conductors between and be connected the output of power match device.See over to flat U-shaped short-circuit end from distributing point and to be capacitive character, see over to flat U-shaped openend and be inductive, so the adaptation of transmitter is the shunt-resonant circuit.And concerning resonant cavity, the center line of two open ends can focus on a very strong linear magnetic field, can respond to very strong eddy current when the center line of the fiber that passes quartz tube reactor by two open ends, and heating reaches gives fixed treatment temperature.
Good effect of the present utility model is, the linear focusing induction heating equipment of designed new-type radio frequency can design the A/F of flat U-shaped cavity-like conductor in the resonant cavity according to the overall dimensions that setting adds the water collar quartz tube reactor, and realizes the non-contact radio-frequency induction heating.Improved the productivity ratio of device systems effectively.
How further specify goal of the invention of the present utility model below in conjunction with accompanying drawing realizes.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
S among the figure represents radio-frequency power supply, the power match device that the P representative is connected with the output of radio-frequency power supply S, D1, DA, two flat U-shaped cavity-like conductors of focusing resonant cavity are formed in the D2 representative, L1, L2 representative is connected symmetrically arranged two flat U-shaped cavity-like conductor (D1, D2) between and be connected the output paraphase feeder line of power match device P, A1-A4 be the paraphase feeder line and focus on two flat U-shaped cavity-like conductors of resonant cavity be connected the feedback point.λ represents the electromagnetic wavelength of radio-frequency power supply.
Specific implementation method
From accompanying drawing as can be seen the power match device P that is connected successively by radio-frequency power supply S, with the output of radio-frequency power supply S of this device basic structure and improve after the focusing resonant cavity form, this focusing resonant cavity is two flat U-shaped cavity-like conductor (D1 that are provided with by axial symmetry, D2) constitute, paraphase feeder line (L1, L2) be connected symmetrically arranged two flat U-shaped cavity-like conductors (D1, D2) between and be connected the output of power match device P.(L1 L2) is divided into two parts with the feedback point (A1-A4) that is connected that focuses on two flat U-shaped cavity-like conductors of resonant cavity with each U-shaped cavity-like conductor to the paraphase feeder line.See over to flat U-shaped short-circuit end and be capacitive character from feedback point (A1-A2 or A3-A4), see over to flat U-shaped openend and be inductive, so the adaptation output of transmitter is the shunt-resonant circuit relatively.Concerning with the resonant cavity of being formed, the center line of two U-shaped open ends can focus on and generate a very strong linear magnetic field, this purpose of design of the present utility model just.
For adapting to the needs of various conditions in the production process, (D1, cross section D2) are that the copper tubing of circle or rectangle makes to flat U-shaped cavity-like conductor.
Flat U-shaped cavity-like conductor (D1, D2) length of the parallel-segment in is 1/4 of radio-frequency power supply electromagnetic wavelength λ, width is not more than 1/16 of radio-frequency power supply electromagnetic wavelength λ.
(D1, (L1, length L2) is 1/2 of radio-frequency power supply electromagnetic wavelength λ to paraphase feeder line D2) to two flat U-shaped cavity-like conductors.
Resonator design of the present utility model meets the two-wire system transmission line theory.Change resonant cavity and transmission feeder junction (A1-A4) position-adjustable resonance impedance.The feeder line of λ/2 makes two cavitys reverse for the paraphase line.The two-wire distance is throbbed with fear and is depended on reaction tube diameter.
Claims (4)
1, the linear focusing induction heating equipment of a kind of radio frequency, the power match device (P) that is connected successively by radio-frequency power supply (S), with the output of radio-frequency power supply (S) and focus on resonant cavity and form, it is characterized in that this focusing resonant cavity is two flat U-shaped cavity-like conductor (D1 that are provided with by axial symmetry, D2) constitute, paraphase feeder line (L1, L2) be connected symmetrically arranged two flat U-shaped cavity-like conductors (D1, D2) between and be connected the output of power match device (P).
2,, it is characterized in that (D1, cross section D2) are circle or rectangle to flat U-shaped cavity-like conductor according to the linear focusing induction heating equipment of the said radio frequency of claim 1.
3, according to the linear focusing induction heating equipment of the said radio frequency of claim 2, it is characterized in that flat U-shaped cavity-like conductor (D1, the length of the parallel-segment D2) is 1/4 of radio-frequency power supply electromagnetic wavelength (λ), and width is not more than 1/16 of radio-frequency power supply electromagnetic wavelength (λ).
4, according to the linear focusing induction heating equipment of the said radio frequency of claim 1, (D1, (L1, length L2) is 1/2 of radio-frequency power supply electromagnetic wavelength (λ) to paraphase feeder line D2) to it is characterized in that being connected two flat U-shaped cavity-like conductors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023417 CN2896775Y (en) | 2006-01-23 | 2006-01-23 | Radio-frequency linear-focusing type inductive heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620023417 CN2896775Y (en) | 2006-01-23 | 2006-01-23 | Radio-frequency linear-focusing type inductive heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2896775Y true CN2896775Y (en) | 2007-05-02 |
Family
ID=38066347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620023417 Expired - Fee Related CN2896775Y (en) | 2006-01-23 | 2006-01-23 | Radio-frequency linear-focusing type inductive heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2896775Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102342179A (en) * | 2009-03-02 | 2012-02-01 | 哈里公司 | Applicator and method for RF heating of material |
-
2006
- 2006-01-23 CN CN 200620023417 patent/CN2896775Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102342179A (en) * | 2009-03-02 | 2012-02-01 | 哈里公司 | Applicator and method for RF heating of material |
| CN102342179B (en) * | 2009-03-02 | 2013-11-27 | 哈里公司 | Applicator and method for RF heating of material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |