CN103334157A - Energy-saving induction coil and crystal growth furnace adopting same - Google Patents
Energy-saving induction coil and crystal growth furnace adopting same Download PDFInfo
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- CN103334157A CN103334157A CN2013102352890A CN201310235289A CN103334157A CN 103334157 A CN103334157 A CN 103334157A CN 2013102352890 A CN2013102352890 A CN 2013102352890A CN 201310235289 A CN201310235289 A CN 201310235289A CN 103334157 A CN103334157 A CN 103334157A
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Abstract
The invention relates to the technical field of induction heating, and in particular relates to an energy-saving induction coil and a crystal growth furnace adopting the same. The energy-saving induction coil comprises a wire tube, wherein the wire tube comprises a conductive part; a hollow part is arranged in the conductive part; a wrapping layer wraps the conductive part; the conductive part comprises a plurality of thin copper wires; fillers are arranged among the plurality of thin copper wires; cooling liquid circulates inside the hollow part; the induction coil is formed by winding the wire tube. Through the energy-saving induction coil, a skin effect and an eddy effect of high-frequency alternating current in a coil are effectively avoided. Meanwhile, good radiation is ensured, and crystal growth is not influenced. Each thin copper wire in the induction coil can be identically heated, and the leaked heat of a heating body can be quickly scattered and conducted to the cooling liquid. Through a unique filling and sealing process, effects of shaping, high heat conductivity, high insulativity, high air impermeability, high flexibility and protection of the security of an internal structure of the coil are achieved, good radiation is ensured, and various crystal growth requirements are completely met.
Description
Technical field
The present invention relates to the induction heating technique field, more specifically, relate to a kind of energy-conservation induction coil and use the crystal growing furnace of this induction coil.
Background technology
Induction heating technique is widely used in, and in the equipment such as Metal Melting, crystal growth, welding, insulation, this technology and scientific research and industrial production are closely connected.In the induction heating equipment operational process, add thermal target and place alternating magnetic field to produce eddy current, cause the warmware heating.At present, too numerous to enumerate at the improvement of this high energy consumption main equipment, mainly concentrate on the design of induction power supply, but rarely have by transforming the work that induction heating circle is raised the efficiency.
When exchange current passes through conductor, cause that distribution of current is inhomogeneous on the cross-sectional area of conductor, more near conductive surface current density more big (skin effect).The current work frequency is more high, and cross-sectional area of conductor is more big, and skin effect is more remarkable.When the very high electric current of frequency during by lead, can think that electric current only flows through in very thin one deck on conductive line surfaces, this cross section that is equivalent to lead reduces, and resistance increases.Electrified wire inside can be accompanied by eddying effect to a certain degree, causes the lead heating.Induction heating equipment be unable to do without the high frequency exchange current, and therefore traditional ruhmkorff coil can consume big energy.The induction coil of family expenses electromagnetic oven equipment uses the enamel-cover twisted wire to turn to plate-like, can weaken skin effect, but heated object need be close to coil, and working temperature is low.And use air-cooled radiating mode, cause warmware periphery temperature field extremely unstable.Therefore no matter be coil design, radiating mode or heat-sinking capability, all can't satisfy the requirement of industrial equipmentss such as Metal Melting, crystal growth, welding.
The high-power induction coil that is used at present crystal growth is the copper pipe coiling, can not change after the typing, in logical cooling fluid and reach better heat radiating effect and coil intensity satisfies high vacuum, requirements such as high positive pressure protection atmosphere.But this kind coil produces strong eddy-current loss in alternating electric field, lose big energy.And not possessing flexibility fully, size has error that difficulty namely is installed slightly, more can not replace between distinct device.Because the restriction of stay-warm case size, a set of equipment can only heat specific dimensions with interior crucible, can't adapt to crucible and the stay-warm case of multiple different size.Cause the limited and waste of material of throughput.
In the present high-power induction heating equipment operational process, because the design defect of legacy equipment, the thermal value of electric capacity and coil is all very big, a large amount of power losses is arranged in the induction system self-heating.Be example with the crystal growth industry, electric energy occupies more than 35% of production cost.
Summary of the invention
The present invention is for overcoming the described number of drawbacks of above-mentioned prior art, provides that a kind of energy-conservation, adjustable size, resistance to air loss are good, axial conduction and the energy-conservation induction coil of radial circumference insulation further, provides the crystal growing furnace of using this induction coil.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of energy-conservation induction coil, wherein, comprise spool, and spool comprises conductive part, is hollow bulb in the conductive part, conductive part coats integument outward; Described conductive part comprises many fine copper wires, is charges between many fine copper wires, and charges play the effect of Homogeneouslly-radiating and supporting and shaping; Described hollow bulb internal circulation cooling fluid.Described charges are fire resistant resin.Described integument is glass fibre, and it is made that induction coil is woven into spool by fine copper wire.
Among the present invention, change the design that traditional Medium frequency induction circle uses the copper pipe coiling, be made into conductive part by the layout of fine copper wire spirrillum, have axial conduction and the characteristic of radial circumference insulation, hollow bulb can in logical cooling fluid.The round wire pipe has fabulous anti-pressure ability, and by glass fibre parcel, charges are fire resistant resin, forms rapid heat dissipation, high temperature resistant, protective layer that resistance to air loss is good and has flexibility, protects the internal structure of spool simultaneously.Hollow bulb passes to cooling fluid, takes away a large amount of leakage heat of heating element and the heat that is produced by drive current.
A kind of crystal growing furnace is used described energy-conservation induction coil, comprises crucible, is located at the outer stay-warm case of crucible, and spool coils on the outer wall of stay-warm case; Induction coil also comprises two sections of drawing, and the end of the section of drawing is provided with electrode, and cooling fluid flows into spool by the section of drawing wherein, by the other section of drawing outflow spool.Among the present invention, the size of spool can (change as crucible size at different crucibles and heat-insulation system, the stay-warm case dimensional change) adjusts and do not break the original structure of ring coil, thoroughly the existing induction coil of change is once finalized the design and can't be adjusted the shortcoming of size, save equipment cost, this characteristic can adapt to different warmwares, operating mode.Further improve the accessibility of system efficiency and operation.
The section of drawing of induction coil is flexible, and the section of drawing can change length by the rotary inductive circle, makes things convenient for induction coil to install and accurate location.
Further, described spool coils and is shaped as cylindrically on the outer wall of stay-warm case, and the center of circle of its every layer line pipe is positioned on the same vertical curve, and the integument of every layer line pipe is in contact with one another.Like this, the spool of lower floor can support the spool on upper strata, and because flexible fire resistant resin makes spool can coil on the outer wall of stay-warm case, the existing induction coil of change is once finalized the design and can't be adjusted the shortcoming of size, saves equipment cost.
Further, also be provided with thermal insulation material between described integument outside and the stay-warm case.Be arranged so that like this leakage heat in the crucible is delivered to spool from stay-warm case, is delivered to the cooling fluid in the hollow bulb again.
Further, described spool coils in the cylindrical bottom portion of stay-warm case outer wall and also is provided with the chassis.By swivel base, can finely tune the length of the section of drawing, the integral body setting of convenient equipment.
Compared with prior art, beneficial effect is:
The present invention abandons the design of induction coil in the past, has effectively avoided skin effect and the eddying effect of high-frequency alternating current in coil.Guarantee good heat radiating simultaneously, do not influence crystal growth.At " the big electric current of high frequency passes through multiplied yarn " this special operation condition, designed unique heat-removal system.When can realize the minimum eddy currents loss, guarantee that being heated of each root fine copper wire in the induction coil is in full accord, the leakage heat of heating element can also be disperseed conduct to cooling fluid rapidly.Unique dosing technology is realized typing, thermal conductivity height, insulativity height, resistance to air loss is good, flexibility is good, protect the effect of coil internal structure confidentiality simultaneously, can be operated in 1*10
-2~ 2*10
5In the kinds of protect atmosphere of Pa, and guarantee that heat radiation is good, satisfy various crystal growth requirements fully.Use identical heat-insulation system and crucible, this equipment complete machine operation current consumption is 1/5th of same category of device energy consumption.
Description of drawings
Fig. 1 is spool cross section structure synoptic diagram of the present invention.
Fig. 2 is crystal growing furnace structural representation of the present invention.
Fig. 3 is the energy-conservation induction coil one-piece construction of the present invention synoptic diagram.
Embodiment
Accompanying drawing only is used for exemplary illustration, can not be interpreted as the restriction to this patent; For better explanation present embodiment, some parts of accompanying drawing have omission, amplify or dwindle, and do not represent the size of actual product; To those skilled in the art, in the accompanying drawing some known features and explanation thereof may to omit be understandable.
As shown in Figure 1, a kind of energy-conservation induction coil wherein, comprises spool 10, and spool 10 comprises conductive part 11, is hollow bulb 12 in the conductive part 11, the conductive part 11 outer integuments 13 that coat; Conductive part 11 comprises many fine copper wires 111, is charges 112 between many fine copper wires 111, and charges 112 play the effect of Homogeneouslly-radiating and supporting and shaping; Hollow bulb 12 internal circulation cooling fluids, charges 112 are fire resistant resin, integument 13 is glass fibre.
In the present embodiment, change the design that traditional Medium frequency induction circle uses the copper pipe coiling, be made into conductive part 11 by the layout of fine copper wire spirrillum, have axial conduction and the characteristic of radial circumference insulation, hollow bulb 12 can in logical cooling fluid.The round wire pipe has fabulous anti-pressure ability, and by glass fibre parcel, charges 112 be fire resistant resin, formation rapid heat dissipation, high temperature resistant, protective layer that resistance to air loss is good and have flexibility, protect the internal structure of spool simultaneously.Hollow bulb passes to cooling fluid, takes away a large amount of leakage heat of heating element and the heat that is produced by drive current.
Shown in Fig. 2,3, a kind of crystal growing furnace is used above-mentioned energy-conservation induction coil, comprises crucible 20, is located at the stay-warm case 30 outside the crucible 20, and spool 10 coils on the outer wall of stay-warm case 30; Induction coil also comprises two sections of drawing 14, and the end of the section of drawing 14 is provided with electrode 50, and cooling fluid flows into spools 10 by the section of drawing 14 wherein, by the other section of drawing 14 outflow spools 10.Among Fig. 3, there are two arrows of top to represent the inflow of cooling fluid respectively and flow out direction.The size of spool 10 can (change as crucible size at different crucibles and heat-insulation system, the stay-warm case dimensional change) adjusts and do not break the original structure of ring coil, thoroughly the existing induction coil of change is once finalized the design and can't be adjusted the shortcoming of size, save equipment cost, this characteristic can adapt to different warmwares, operating mode.Further improve the accessibility of system efficiency and operation.The section of drawing of induction coil 14 is flexible, and the section of drawing can change length by the rotary inductive circle, makes things convenient for induction coil to install and accurate location.
In Fig. 2, spool 10 coils and is shaped as cylindrically on the outer wall of stay-warm case 30, and the center of circle of its every layer line pipe 10 is positioned on the same vertical curve, and the integument 13 of every layer line pipe 10 is in contact with one another.Also be provided with thermal insulation material between integument 13 outsides and the stay-warm case 30.The spool 10 of lower floor can support the spool 10 on upper strata, and because flexible fire resistant resin makes spool can coil on the outer wall of stay-warm case 30, the existing induction coil of change is once finalized the design and can't be adjusted the shortcoming of size, saves equipment cost.Among the figure, dotted arrow is represented the hot direction of the leakage from crucible, and the temperature of crucible can reach 2000 degree in the use, and its a large amount of heat is delivered to spool 10 from stay-warm case 30, is delivered to the cooling fluid in the hollow bulb 12 again, makes to dispel the heat fast.
Spool coils in the cylindrical bottom portion of stay-warm case outer wall and also is provided with chassis 60.By swivel base 60, can finely tune the length of the section of drawing 14, the integral body setting of convenient equipment.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the protection domain of claim of the present invention.
Claims (7)
1. an energy-conservation induction coil is characterized in that, comprises spool (10), and spool (10) comprises conductive part (11), is hollow bulb (12) in the conductive part (11), the outer integument (13) that coats of conductive part (11); Described conductive part (11) comprises many fine copper wires (111), is charges (112) between many fine copper wires (111); Described hollow bulb (12) internal circulation cooling fluid; Induction coil is formed by spool (10) coiling.
2. a kind of energy-conservation induction coil according to claim 1 is characterized in that, described charges (112) are fire resistant resin.
3. a kind of energy-conservation induction coil according to claim 1 is characterized in that, described integument (13) is glass fibre.
4. a crystal growing furnace is characterized in that application rights requires 1 to 3 arbitrary described energy-conservation induction coil, comprises crucible (20), is located at the outer stay-warm case (30) of crucible (20), and spool (10) coils on the outer wall of stay-warm case (30); Induction coil also comprises two sections of drawing (14), and the end of the section of drawing (14) is provided with electrode (50), and cooling fluid flows into spool (10) by the section of drawing (14) wherein, by the other section of drawing (14) outflow spool (10).
5. a kind of crystal growing furnace according to claim 4, it is characterized in that, described spool (10) coil on the outer wall of stay-warm case (30) be shaped as cylindrical, the center of circle of its every layer line pipe (10) is positioned on the same vertical curve, and the integument (13) of every layer line pipe (10) is in contact with one another.
6. a kind of crystal growing furnace according to claim 5 is characterized in that, also is provided with thermal insulation material between described integument (13) outside and the stay-warm case (30).
7. a kind of crystal growing furnace according to claim 5 is characterized in that, described spool (10) coils in the cylindrical bottom portion of stay-warm case (30) outer wall and also is provided with chassis (60).
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| CN2013102352890A CN103334157A (en) | 2013-06-14 | 2013-06-14 | Energy-saving induction coil and crystal growth furnace adopting same |
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| CN2013102352890A CN103334157A (en) | 2013-06-14 | 2013-06-14 | Energy-saving induction coil and crystal growth furnace adopting same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113061984A (en) * | 2021-03-09 | 2021-07-02 | 山东天岳先进科技股份有限公司 | Crystal growth method and device |
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Application publication date: 20131002 |