CN1256005C - Induction heater - Google Patents
Induction heater Download PDFInfo
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- CN1256005C CN1256005C CNB011329386A CN01132938A CN1256005C CN 1256005 C CN1256005 C CN 1256005C CN B011329386 A CNB011329386 A CN B011329386A CN 01132938 A CN01132938 A CN 01132938A CN 1256005 C CN1256005 C CN 1256005C
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- chipware
- induction heating
- core leg
- inductor
- heating equipment
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Electromagnetism (AREA)
- General Induction Heating (AREA)
Abstract
When a high frequency current is carried from electric power supply to heating coils (5A, 5B) of plural C-shaped inductors (1A, 1B) juxtaposed in the carrying direction of a heating object material (6) sent by being supported with a table roller, mutually inversely turning magnetic fluxes are generated in the adjacent inductors (1A, 1B). Therefore, the inversely turning magnetic fluxes cross each other in a loop circuit formed of resistance of the heating object material (6) and resistance of an edge part and a loop circuit formed of grounding resistance and resistance of an edge part, and electromotive forces turn in the direction for negating each other.
Description
The application is dividing an application of No. 95107015.0 patent application submitting to June 21 nineteen ninety-five.
The present invention relates to a kind of induction heating equipment that is used for the material that heats once more with treating of moving of induction heating mode heating, more particularly, relate to and a kind ofly be used to prevent treating that again heating material and roller-way joint produce the anti-electric spark mechanism of modified model of electric spark, a kind of modified model cooling body that is used to cool off inductor, and a kind of modified model adjusting mechanism that is used to adjust the inductor gap.
In general, in a steel rolling line, what be heated to predetermined temperature treats that the material that heats is again passed on continuously, and is rolled into thin plate continuously by some milling trains.Because the temperature of the marginal portion of material width direction is fallen greater than its middle part, thereby the Temperature Distribution of material width direction is uneven.Rolling temperature material pockety certainly leads to the thin plate of the inhomogeneous unanimity of quality.In addition, harden because of temperature drop in the above-mentioned marginal portion of material, and material production is broken, or may the local wearing and tearing of quickening rolling mill roll.
For fear of the problems referred to above, steel sheet production line equipment comprises induction heating equipment (edge heater), and it is positioned at the milling train upstream and has inductor with induction heating mode heating material marginal portion.
The induction heating equipment of some type uses E type inductor, and other types then adopt C type inductor.
In the induction heating equipment that has E type inductor, upper and lower inductor has E sections core respectively, and E sections core is wound with heater coil, and its that surface relative with treating again heating material is covered with refractory slab.In left and right every side of material, every pair of upper and lower inductor is vertical relatively, clips material therebetween.Therefore, the magnetic flux that produces between upper and lower inductor passes material and induce eddy current in material.Therefore, the resistance of eddy current and material produces Joule heat, and the edge part of material is heated.
E type inductor must have narrow gap between material and self, so that improve the heat efficiency.But, make gap between material and the inductor be too narrow to the journey of the heat efficiency of satisfaction guaranted, need very high gap adjustment technology.In addition, the narrower gap between material and the inductor is contained on the inductor that to keep heater coil to avoid life-span of thermal-radiating refractory slab of material short more.
The open text of Japanese utility model application 56-46195 number, the open text of Japanese utility model application 60-65995 number, and disclose in Japanese Patent Application Publication text 62-51188 number and relevant technology is adjusted in C type inductor gap.In addition, disclose in the open text of Japanese utility model application 57-150495 number and be used to protect heater coil to avoid treating again the technology of the radiation of heating material.
Figure 27 and 28 expression C type inductors.As shown in figure 27, each C type inductor 1 has the C sections core 2 of a band gap 4, and upper and lower core leg 3 is relative, has gap 4 therebetween, on the core leg 3 around heater coil 5.The gap 4 of two inductors 1 is relative, and the heating material 6 for the treatment of again that is plate-shaped can be passed through betwixt.
As shown in figure 28,, produce and pass in the magnetic flux of material 6, in the part of the material 6 that magnetic flux passes, induce eddy current 8 when power supply 7 during to heater coil 5 feed electric currents.
Because C type inductor 1 is narrower than the gap of E type inductor, and in the C sections core 2 of C type inductor, form a loop, thereby C type inductor is better than E type inductor aspect the heat efficiency so that pass magnetic flux phi.
In the induction heating equipment that is provided with C type inductor 1, the material 6 that passes on when roller-way 9 is subjected to the induction heating of C type inductor 1, and the part induced current that is used for heating material flows to the ground that joins with roller-way by roller-way 9.
Circuit shown in Figure 29 is equivalent to the induced current circuit.As shown in figure 29, intersect in magnetic flux phi and loop 10, also intersects with loop 11, and loop 10 is made of near the resistance R 2 of the part the marginal portion of the resistance R 1 of the marginal portion of material 6 and material 6, and loop 11 is made of earth resistance R0 and marginal portion circuit R1.Therefore, alternating flux and loop circuit are intersected the electromagnetic induction that causes and have been produced electromotive force E=-d Φ/dt, and induced current flows through loop 10 and loop 11 respectively.Flow to the electric current I on ground by roller-way 9
1Contact point at material 6 and roller-way 9 is emitted spark.In addition, when high pressure acts on the inductor, on material 6, can produce the arc trace that diminishes product quality.
A kind of common induction heating equipment is arranged, and wherein, a plurality of C type inductors are by a plurality of high frequency electric sources difference feed high-frequency currents.In this case, have different frequencies as each electric current, owing to the mutual inductance effect between the induced current that flows through inductor and material 6, resonance may appear in the output voltage of inductor so.This resonance can cause the eddy current that makes its damage in power supply.
In addition, if high frequency electric source has different frequencies, between the induced current in material 6 electrical potential difference may appear.Therefore, flow to the electric current I on ground by roller-way 9
1Amount increase, just cause electric spark easily.For fear of this problem, in common situation, roller-way 9 is electric insulations, thereby prevents electric current I
1Flow to ground, so that avoid producing electric arc.Therefore, improved the cost of rolling equipment greatly.
The narrower gap of C type inductor 1, magnetic flux bleed-through is more little, thereby the efficiency of heating surface is high more.But the best size in gap depends on that the thickness of material 6 changes.To consider the warpage of material 6 front ends and/or rear end when in addition, setting gap big or small.It is damaged, and roll line will be shut down for a long time with reparation to be damaged so.For fear of this problem, the gap must be set to such an extent that have enough big size, so just is difficult to improve the efficiency of heating surface.
Figure 30 is the cross-sectional figure of the heater coil of common electrical sensor.
Heater coil is on the iron core of laminar structure, and refractory slab is contained in an end of iron core, accompanies support plate therebetween.Because refractory slab is treated heating material again near what just passing on, thereby it always is subjected to the radiant heat from material, thereby its temperature is protected at 800 ℃-1300 ℃.Form though refractory slab is the fabulous adiabatic pourable cement of usefulness fire resistance, cement is possible owing to thermal stress is split, thereby becomes bad at short notice.For fear of the crack occurring, make metal water cooling tube pass through refractory slab as cooling water path.For example, United States Patent (USP) the 4th, 960 has been described this water-cooled refractory slab in No. 967.
This metal water cooling tube is to use and is difficult to induction heating and non-magnetic stainless steel good heat resistance is made.But, because refractory slab is to be arranged in the high density flux, though it be by stainless steel make also can be by electromagnetic induction heating.Therefore, refractory slab is not only and is heated from the thermal radiation for the treatment of again heating material, and is heated by the heat that it self produces.Therefore, must strengthen the flow of cooling water.In addition, the increase of cooling water inflow must strengthen thermal loss, causes treating further the reducing of the efficiency of heating surface of heating material again.
In addition, be difficult for sensed heating, do not make the cold pipe of rust molten steel form circle, spend great amount of manpower in order to make pipe.In addition, if the refractory slab that adiabatic pourable cement is made has had the crack, iron powder and/or oxidation scale will be invaded the crack so, and make the adjacent part short circuit of metal water cooling tube, thereby form flux paths.Therefore, eddy current can flow through above-mentioned short circuit and heating metal pipe.In addition, may form electric spark, make the fusing of part metals pipe, thereby cause the leakage of water in short circuit place.When this crack forms, must stop the work of inductance heater for a long time, the refractory slab that more renews.
First purpose of the present invention provides a kind of induction heating equipment, and it can prevent at roller-way and treat that again the contact point of heating material produces electric spark and need not to make the roller-way insulation, thereby can produce high-quality product and the cost of energy reduction own.
Second purpose of the present invention provides and adorns high cooling performance iron core in a kind of, high efficiency, high-power induction heating equipment.
The 3rd purpose of the present invention provides a kind of induction heating equipment of the C of being provided with type inductor, and its gap length can change with the warpage end that prevents and treat again heating material and touches, and suitably reduces the distance with material simultaneously again, so that improve the efficiency of heating surface.
The 4th purpose of the present invention provides a kind of induction heating equipment, it comprises that one forms in refractory slab, and can prevent to be subjected to induction heating to improve the water cooling tube of the efficiency of heating surface, this induction heating equipment can use a small amount of cooling water to carry out heating work, thereby make self more compact, and this induction heating equipment is easy to operate, and it is also convenient to make.
According to induction heating equipment of the present invention, it is characterized in that: a plurality of C type inductors are treating that again passing on of heating material arrange on the direction in parallel to each other, therefore, the upper and lower core leg of these C type inductors can be passed in the marginal portion of material, thereby by the marginal portion of the heater coil induction heating material on the upper and lower core leg respectively.The feature of induction heating equipment of the present invention also is: the coiling heater coil makes the flow direction that produces on one of every pair of C type inductor opposite with the flow direction that another C type inductor produces.
More particularly, a plurality of C type inductors are arranged on the direction of motion for the treatment of again heating material of being passed on by roller-way in parallel to each other, make material can pass through the gap of these inductors.When from power supply during to the heater coil feed high-frequency current of inductor, the C type inductor that is parallel to each other produces the opposite magnetic flux of direction.Therefore, the loop that constitutes with resistance and resistance material and the part that the marginal portion is contiguous respectively of the magnetic flux that direction is opposite and intersect by the loop that the resistance of earth resistance and marginal portion constitutes by edge of materials part.Therefore, the electromotive force that is produced by each magnetic flux offsets, and the earth-current of the reason of generation electric spark is no longer mobile.
In addition, induction heating equipment of the present invention is characterised in that: each C type inductor is connected on the common source; Two pairs or manyly C type inductor is passed on direction ground perpendicular to material partly arrange, be connected on each C type inductor with power supply altogether along the opposite edges of material.In addition, feature of the present invention also is: each C type inductor is connected in by a selector switch and uses power supply altogether.
Be parallel to each other or the C type inductor of positioned opposite mutually because common source is connected in, thereby the phase place of high frequency electric source can easily adjust, thereby can prevent to produce earth current.In addition because each C type inductor is connected in same power supply by a selector switch, even thereby when some inductors break down, also can carry out the heating of balance by the manipulation selector switch.
According to induction heating equipment of the present invention, it is characterized in that: on U sections core, C shape iron core is to be installed by detachable to form upper and lower pellet, is made of the lamination silicon steel sheet respectively, as the core leg, has the gap of the U-iron core that is clipped in therebetween; Each pellet all has water-cooled mechanism.
In said structure,, be easy to change because pellet is detachable, thereby is easy to maintenance.In addition because pellet has water-cooled mechanism, thereby can prevent overheated, so can be to the big electric current of its feed.
According to induction heating equipment of the present invention, it is characterized in that: be connected between the buttcover plate of water cooling tube, the fixing pellet spare of cuboid, it comprises the silicon steel sheet of lamination, on the outer surface of buttcover plate, be provided with half-cylindrical chipware, it comprises the radially silicon steel sheet of lamination, thereby forms the pellet that has flat ellipsoid.
In said structure, because water cooling tube connecting buttcover plate, between buttcover plate, fixing the rectangular parallelepiped protrusion part pellet, thereby pellet can cool off effectively internally, thereby can be to the big electric current of its feed.
According to induction heating equipment of the present invention, it is characterized in that: each pellet has a cylindrical chipware, and what cylindrical chipware comprised a plurality of cooling water pipes of ining succession radially cools off fin and the silicon steel sheet of lamination radially between radial fins.
In said structure, owing to connecting radially the cooling off between the silicon steel sheet of radially lamination that fin is arranged on pellet of water cooling tube, thereby pellet can be cooled effectively internally.In addition, because pellet has the radially silicon steel sheet of lamination, when magnetic flux passed, no matter flow direction how, it was difficult for sensed heating.Therefore, pellet can make more compact.
According to induction heating equipment of the present invention, it is characterized in that: C sections core comprises by the interconnective upper and lower chipware of hinge portion, therefore, they can rotate to change the gap between the upper and lower chipware around the jointed shaft that passes hinge portion, and the cross section of those parts at the formation hinge portion of upper and lower chipware and contiguous position thereof is greater than the cross section of iron core other parts.
In said structure, because thickness with adaptation material can be adjusted around jointed shaft rotation by making chipware in the gap between the upper and lower chipware, thereby heating material expeditiously.In addition, even the fore-end of material or rear end part warpage also can make chipware avoid the end of warpage by chipware is rotated around jointed shaft, thereby avoid touching between inductor and the warpage end.
In addition because hinge portion and near cross section thereof be greater than the cross section of other parts, even thereby when the gap of upper and lower chipware is strengthened, the path of magnetic flux does not narrow down yet, thereby makes the flux loss of hinge portion keep minimum.
According to induction heating equipment of the present invention, it is characterized in that: for upper and lower core is provided with jointed shaft respectively, intermeshing upper and lower gear is connected with jointed shaft, and cylinder or jack link to each other with one of gear by one arm, thereby upper and lower chipware can be rotated with opposite direction.In addition, also be in feature of the present invention: the diameter of the lower gear that the diameter that cogs that links to each other with the jointed shaft of last chipware links to each other less than the jointed shaft with following chipware.
According to the variation of material thickness, drive jack or cylinder so that arm is rotated, thereby go up the jointed shaft of chipware and go up chipware rotation itself.At this moment, with the lower gear of the engagement that cogs with the opposite rotation that turns to that cogs, thereby make down chipware with above-mentioned on the contrary turn to rotation.In addition, when the diameter that cogs during less than the diameter of lower gear, the corner of last chipware (promptly going up the circumferential distance that the leg of chipware moves past) is than the big number of degrees that are directly proportional with gearratio of corner of following chipware.
The refractory slab that induction heating equipment of the present invention adopts is made with heat-insulating material, and be installed in the water-cooled inductor iron core that is wound with heater coil with the material facing surfaces on.The feature of above-mentioned refractory slab is wherein to form a chamber portion as cooling water path.
When high frequency electric source during, produce and be used to heat the magnetic flux for the treatment of again heating material that passes on continuously to heater coil feed high frequency electric source.Refractory slab is heated by the radiant heat of the material of heat.Owing in refractory slab, form chamber portion, thereby the water cooling that can be cooled of the heater coil side of inductor, thereby protected the insulating coating of heater coil as cooling water path.
Therefore, do not have metal water cooling tube in this refractory slab, so refractory slab can sensedly not heat.In other words, only need the be cooled radiations heat energy of hot material of refractory slab is just passable.Therefore, can reduce the size of cooling water inflow and cooling body.In addition, cooling body does not almost have thermal losses, thereby has improved the efficiency of heating surface.Even when cooling water spills by crack (if having formed) from refractory slab, when perhaps iron particle or oxidation scale enter in the refractory slab by the crack, also can not form flux paths, thereby inductor can be avoided loss overheated and that fusing brings.
The feature of the refractory slab of induction heating equipment of the present invention also is: wherein can embed water cooling tube, this water cooling tube is made by nonmetal, as the path of cooling water.Non-metallic pipe can be plastic conduit, earthenware or quartz ampoule.And non-metallic pipe can make bellows or have the pipe of fin.
Because water cooling tube is non-metallic pipe such as plastic conduit, earthenware or quartz ampoule, thereby can sensedly not heat.Particularly plastic conduit and bellows but are easy to bending, and the pipe that has a fin has big surface area, thereby the cooling effectiveness height.
The feature of the refractory slab of induction heating equipment of the present invention also is: it has the non-metallic pipe of at least one embedding refractory slab, the several portions of this non-metallic pipe layout that is parallel to each other, a pair of collector pipe is constituted and is inserted in the refractory slab by nonmetal, is communicated with above-mentioned non-metallic pipe respectively.
Be arranged in parallel by the above-mentioned of the non-metallic pipe that is connected in nonmetal collector pipe, cooling water can flow through refractory slab equably, improves cooling effectiveness, has protected the insulating coating of coil.
Brief description of drawings:
Fig. 1 is the stereogram of the induction heating equipment of first embodiment of the invention;
Circuit diagram shown in Figure 2 is schematically represented the circuit of induction heating equipment shown in Figure 1;
Fig. 3 is the circuit diagram of the induction heating equipment of second embodiment of the invention;
Fig. 4 is the stereogram of the induction heating equipment of third embodiment of the invention;
Fig. 5 is the stereogram of pellet among Fig. 4;
Stereogram shown in Fig. 6 A represents to be contained in the cooling fin in the pellet shown in Figure 5;
Fig. 6 B is the cutaway view along A-A line among Fig. 6 A;
Fig. 7 is the stereogram according to the induction heating equipment of the fourth embodiment of the present invention;
Fig. 8 is the stereogram of the pellet among Fig. 7;
Fig. 9 is the stereogram that is contained in the cooling fin in the pellet shown in Figure 8;
Figure 10 is the end view of the induction heating equipment of fifth embodiment of the invention;
Cutaway view shown in Figure 11 is represented the hinge portion among Figure 10;
Figure 12 is the induction heating equipment of the sixth embodiment of the present invention, and it has movably inductor;
End view shown in Figure 13 is represented the local modification of the 5th embodiment, and it has movable inductor;
Figure 14 is the end view of the induction heating equipment of seventh embodiment of the invention, and wherein, upper and lower inductor portion portions is connected by upper and lower gear;
Figure 15 is the cutaway view of induction heating equipment shown in Figure 14;
Figure 16 is the end view of the induction heating equipment of eighth embodiment of the invention, and wherein, upper and lower inductor part couples together by the upper and lower gear with different-diameter;
Figure 17 is the sectional side elevation of induction heating equipment shown in Figure 16;
Figure 18 is the horizontal cross of used refractory slab in the induction heating equipment of ninth embodiment of the invention;
Figure 19 is the amplification sectional side elevation of refractory slab shown in Figure 180;
Horizontal cross shown in Figure 20 is represented a kind of modification of the refractory slab of ninth embodiment of the invention;
Figure 21 is the amplification sectional side elevation of refractory slab shown in Figure 20;
Cross-sectional figure shown in Figure 22 represents the another kind of modification of the refractory slab of ninth embodiment of the invention, and it comprises the plastic conduit of making bellow-shaped;
Cross-sectional figure shown in Figure 23 represents another modification of the refractory slab of ninth embodiment of the invention, and it comprises the plastic conduit that has fin;
Horizontal cross shown in Figure 24 is represented a kind of modification of the refractory slab of ninth embodiment of the invention, and it has many tight, as to be arranged in parallel earthenwares;
Horizontal cross shown in Figure 25 is represented another modification of the refractory slab of the 9th embodiment, and it has the chamber portion as cooling water path;
Horizontal cross shown in Figure 26 is represented another modification of the refractory slab of the 9th embodiment, and it has many water passages of moulding a porcelain tube and a coiling that mutual close parallel is arranged;
Figure 27 is the stereogram of common induction heating equipment;
Figure 28 is the stereogram of induction heating equipment key component shown in Figure 27;
Figure 29 schematically represents the circuit diagram of induction heating equipment shown in Figure 27;
Figure 30 represents to be equipped with the cross-sectional figure of the inductor of common refractory slab.
First embodiment
Now consult Fig. 1 and 2 and describe the first embodiment of the present invention.Induction heating equipment according to first embodiment of the invention has two couples of C type inductor 1A and 1B, by can be by the gap (Fig. 1 only draws and is arranged in a pair of inductor 1A and the 1B of material one example) of inductor along treating that heating material 6 passes on the relative two edges part of the material 6 that roller-way 9 that direction arranges passes on again.
Each C type inductor 1A and 1B have C sections core 2, it be annular core is cut into the C type and comprise a gap 4, gap 4 is divided portion of iron core, a pair of core leg 3-1 and 3-2 face mutually, form the gap therebetween, they are as a pair of magnetic pole.Inductor 1A (1B) has respectively in the opposite direction on core leg 3-1 and 3-2, and is connected in the heater coil 5A and the 5B of a common source 7.
Be the gap 4 that straight tabular material 6 sent two couples of C type inductor 1A and 1B.
Fig. 2 schematically represents the circuit that formed by material 6 and C type inductor 1A and 1B.The magnetic flux Φ of C type inductor 1A
1Intersect with the loop 10 that resistance R 2 by near the part the marginal portion of the resistance R i of material 6 marginal portions and material 6 constitutes, also intersect in the loop 11 that constitutes with resistance R 1 by earth resistance R0 and marginal portion, therefore produces electromotive force E
1=-d Φ
1/ dt.On the other hand, the magnetic flux Φ of C type inductor 1B
2Along with magnetic flux Φ
1Intersect in opposite direction and loop 10 and 11, thereby produce electromotive force E
2=-d Φ
1/ dt.
Because Φ
1=-Φ
2So, E
1+ E
2=0.In other words, the payment of two electromotive force does not have earth current to produce.
Therefore, do not have earth current to pass through material 6 and roller-way 9, thereby contact point betwixt can not form electric spark.Therefore, on the material for the treatment of to heat again 6, the arc trace can be do not produced, so just high-quality stocking can be produced.In addition,, thereby needn't make roller-way 9 insulation, thereby reduce the cost of equipment widely because no earth current flows through roller-way 9.
In addition, owing to only use a power supply (7) in the present embodiment, the current phase that flows through C type inductor 1A is identical with the current phase that flows through C type inductor 1B.Therefore, present embodiment can not produce resonance phenomena (then can produce resonance phenomena in a plurality of inductors are connected in the device of different electrical power), thereby has prevented that the eddy current flow that can make device produce fault from crossing the phenomenon of power supply.
Second embodiment
Fig. 3 represents the induction heating equipment according to the second embodiment of the present invention.
This induction heating equipment have along treat again heating material 6 throughput directions be arranged in material 6 both sides by C type inductor 1A, 1B, 1a, the gap that 1b, material 6 can be by these inductors.Inductor 1A, 1B, 1a and 1b are connected in a common source 7.The structure of inductor 1a and 1b is identical with 1B with C type inductor 1A among first embodiment.
Match circuit 13 is connected in power supply 7, also is connected in selector switch 14A, 14B, 14b and 14a.The C type inductor 1A that is positioned at material 6 one sides is connected in switch 14A, and the inductor 1B adjacent with inductor 1A is connected in switch 14B.The C type inductor 1a that is positioned at material 6 opposite sides is connected in switch 14a, and the C type inductor 1b adjacent with inductor 1a is connected in switch 14b.
When from common source 7 to four C type inductor 1A, 1B, during 1a and 1b power supply, selector switch 14A, 14B, 14a and 14b connect, the switch SW 1 in the match circuit 13 is connected.2 of switch SW in the circuit 13 keep off-state.
As selection switch 14A, 14B, 14b and 14a connect, and to four C type inductor 1A, 1B, when 1a and 1b power supply, the eddy current direction that forms in material 6 is shown in arrow among the figure.Mutually contiguous eddy current 8 flows with opposite direction, thereby they repeal by implication, and can not form earth current.
In addition, when C type inductor 1a and 1B broke down, turn-offing selector switch 14B and 14a can work on.At this moment, the switch SW 1 of match circuit 13 is turn-offed, and adjusts the impedance variable when switch SW 2 connections quit work with convenient two inductor 1a and 1B.
The 3rd embodiment
The induction heating equipment of Fig. 4-6 expression third embodiment of the invention.
In this induction heating equipment, as shown in Figure 4, two C type inductor 1A and 1B arrange along the length direction of material 6, are used to produce the opposite magnetic flux of direction of the marginal portion of passing material 6.Inductor 1A and 1B are by a power supply feed high-frequency current.
Each C type inductor 1A (1B) has a U-iron core 16, and U-iron core 16 has the vertical part of its vertical length of basic comprising and a pair ofly is linked as integral body by vertical part, the horizontal component of its horizontal length of basic comprising.Core leg 3-1 and 3-2 are contained in respectively on the end that the two horizontal parts of U-iron core 16 divides removably.
Fig. 5 is the stereogram of each core leg 3-2 (3-1).Core leg 3-2 (3-1) has a pellet 18, a heater coil 5 and a water-cooled mechanism on pellet 18 peripheries.
The upper surface of the upper surface of pellet spare 3a and half-cylindrical chipware 3b constitutes a level and smooth oval surface, and heater coil 5 is on the periphery of the pellet that is formed by half-cylindrical chipware 3b and pellet 3a.
Fig. 6 A and 6B represent buttcover plate 19-1 (19-2) and water-cooled mechanism.Fig. 6 B is the cutaway view along A-A line among Fig. 6 A.
Buttcover plate 19-1 (19-2) is a rectangular slab, and its size is identical with the side of the pellet spare 3a of cuboid.Have the upper end and the left and right edge that are arranged on buttcover plate with the water cooling tube 20 of buttcover plate same thickness.Pipe 20 also extends along the middle part of buttcover plate.In this structure, cooling water is introduced and is discharged from two edges by middle.The cooling fin 21 that a plurality of coppers become stretches out from the middle part of water cooling 20.Silicon steel sheet lamination radially between every pair of adjacent copper fin 21, and constitute half-cylindrical chipware 3b.As shown in figure 30, pellet 18 is surrounded with (with treating that again heating material 6 is a relative) end plate by a supporting frame, and refractory slab and heater coil 5 are mounted thereto.
Now consult Fig. 4, form groove 17 on the horizontal component of U-iron core 16, groove 17 is corresponding to (comprising a pair of buttcover plate) pellet spare 3a.Every groove 17 extends to vertical part from the end face of corresponding horizontal part, and extends through the thickness of horizontal component on vertical.Pellet spare 3a is not assemblied in the groove 17 around that part of heater coil 5, thereby core leg 3-1 (3-2) is fixed on the U-iron core 16 with reinforcing, and U-iron core 16 and core leg 3-1 and 3-2 constitute the C core.
As mentioned above, in induction heating equipment according to third embodiment of the invention, groove 17 leads to the end face and the vertical horizontal component that passes of the horizontal component of iron core 16, and the pellet spare 3a in the middle of each is fitted in the corresponding groove 17, thereby core leg 3 is fixed on the U-iron core.Therefore, the core leg can be contained on the core easily.When refractory slab becomes bad, pull down with the core leg, can change refractory slab easily.
In addition, in the 3rd embodiment, the pellet spare 3a of pellet 18 is fixed between the buttcover plate 19 that is surrounded by water cooling tube 20, is clipped between the half-cylindrical chipware 3b from water cooling tube 20 radially-protruding cooling fins 21.Therefore, the cooling expeditiously that pellet 18 can be internally.Like this, being heated of pellet 18 can be limited, and breaking of each silicon steel sheet insulating can be prevented.In addition and since can reduce coiling on the pellet 18 heater coil 5 add heat with the protection insulating coating, thereby by a large amount of electric currents of feed induction heating material 6 effectively.
The 4th embodiment
Fig. 7-9 expression is according to the induction heating equipment of fourth embodiment of the invention.
As shown in Figure 7, in this embodiment, two C type inductor 1A and 1B arrange along the device direction of material 6, make the opposite magnetic flux of formed direction pass the marginal portion of material 6.Inductor 1A and 1B are by a power supply feed high-frequency current.
Each C type inductor 1A (1B) has a U-iron core 16, the used iron core 16 of its overview and the 3rd embodiment is basic identical, core leg 3-1 and 3-2 are contained on the end of 16 two horizontal components of U-iron core removably respectively, heater coil 5 forms water-cooled mechanism in each core leg 3-1 and 3-2 on core leg 3-1 and 3-2.
Fig. 8 is the stereogram of core leg 3-1 (3-2).Core leg 3-1 (3-2) is made of a cylindrical pellets 18.Pellet 18 is made of cylindrical chipware 3b, and chipware 3b comprises the radially silicon steel sheet of lamination.Water cooling tube 20a extends along pellet 18 middle parts.Copper fin 21 radially is fixed on the periphery of water cooling tube 20a by welding.Water cooling tube 20b extends along the edge of cooling fin 21.Form two-tube 22 around the bottom of water cooling tube 20a.Every water cooling tube 20b that extends along fin 21 edges have central water cooling tube 20a upper end with manage the end that 20a is communicated with, and with two-tube 22 other ends that are communicated with.Cooling water is introduced from the lower end of central water cooling tube 20a, and two-tube 22 discharges by being communicated with an exterior tube.Therefore silicon steel sheet lamination radially between the radial fins 21 that is fixed in central water cooling tube 20a constitutes cylindrical chipware 3b.
Holding two-tube 22 hole is vertical formation of those parts that passes the mounting core leg 3-1 and the 3-2 of U-iron core 16 horizontal components.The assembling process of C type inductor is: at the periphery coiling heater coil 5 of pellet 18, and on that surface relative with treating again heating material 6 that refractory slab (show and draw) is installed in pellet 18.In addition, a supporting frame is set, makes it encase pellet 18.Then, two-tube 22 of each pellet 18 is passed through the gap of iron core 16 and insert in the respective aperture of U-iron core 16, thereby core leg 3-1 and 3-2 are fixed on the iron core 16.
Because in being used as the cylindrical pellets 18 of core leg 3, the radial fins 21 that links to each other with water cooling 20 is clipped between the silicon steel sheet of cylinder-shaped iron core 3b, thereby can cool off pellet 18 effectively internally.In addition, because the silicon steel sheet of pellet 18 is laminations radially, thereby compares with pellet 18 shown in Figure 5 (silicon steel sheet of its chipware 3a is crossing with magnetic flux), when magnetic flux passed with any direction, they all were difficult for sensed heating.Therefore, the pellet 18 of Fig. 7 can make compacter, helps to alleviate the weight of C type inductor.
Though in the 4th embodiment, two C type inductor 1A and 1B arrange along the length direction of material 6, four or more inductor can be set also.In addition, inductor not only can be used for heated plate material 6, also can be used for heating bar or tubing.
The 5th embodiment
Contrast Figure 10 and 11 describes the induction heating equipment of fifth embodiment of the invention below.
This induction heating equipment has C type inductor 1A as shown in figure 10.Inductor 1A has a gap 4 of cutting the left midleg of annular core and forming, and a C sections core 32 that has the hinge portion 31 that is positioned at the right midleg of iron core.C sections core 32 has by hinge portion 31 interconnective chipware 32a of going up and following chipware 32b.Last chipware 32a has a jointed shaft 33 at an end relative with core leg 3-1, and around the half-cylindrical face 34 of jointed shaft 33.Following chipware 32b has the concave surface 35 that a curvature and above-mentioned half-cylindrical face 34 are complementary.When last chipware 32a assembles with the following chipware 32b that fixes, between semi-cylindrical 34 and concave surface 35, form a little gap, thereby form C type inductor 1A.Heater coil 5A and 5B are respectively on upper and lower core leg 3-1 and 3-2.One power supply (not shown) is to heater coil 5A and 5B feed high-frequency current.
Figure 11 represents the concrete structure of the hinge portion 31 of C type inductor 1A.Jointed shaft 33 passes chipware 32a and is fixed on the chipware 32a by rotary sleeve 36.Cover 36 is fixed by bearing pedestal 38a and 38b by bearing 37.Bearing pedestal 38a and 38b are fixed on the pedestal (not shown).
In the 5th embodiment, because last chipware 32a is by hinge portion 31 rotatably supports, thereby the gap 4 of C type inductor can be according to the thickness adjustment of material 6, thus heating material effectively.
For example, the warp value checkout gear (not shown) that utilization is arranged on the roll line detects amount of warpage, clockwise rotating chipware 32a on the basis of the signal of representing this amount of warpage, make it from material 6 recession, can avoid touching between the inductor 1A that causes owing to material 6 fore-ends or rear end part warpage and the material.
Therefore, must set the size in the gap of inductor need not to resemble in common unit, and this gap is to adjust according to the thickness of material 6 usually.Therefore, the thickness of tube material is not how, and material can be heated effectively.
The 6th embodiment
Contrast Figure 12 describes the induction heating equipment of sixth embodiment of the invention below.
This induction heating equipment has C type inductor 1A shown in Figure 12.As the inductor of the 5th embodiment, inductor 1A has a C sections core, and C sections core comprises on one chipware 32a and chipware 32b once.Last chipware 32a has relative with core leg 3-1 and have half cylindrical surface 34 a vertical end, and down chipware 32b has the concave surface 35 that a curvature and semi-cylindrical 34 are complementary.When semi-cylindrical 34 mated with concave surface 35, last chipware 32a was supported, and can rotate around a jointed shaft 33.Heater coil 5A and 5B are respectively on upper and lower core leg 3-1 and 3-2.High-frequency current is sent to heater coil 5A and 5B.
In the 6th embodiment, the width (A+a) of vertical part of last chipware 32a that is provided with hinge portion 31 is greater than the width A of the horizontal component of last chipware 32a.Equally, be provided with the width (A+a) of vertical part of following chipware 32b of hinge portion 31 greater than the following width A of the horizontal component of chipware 32b.Therefore, near as the hinge portion 31 of upper and lower chipware 32a and 32b bonding part, the cross section of C sections core has big area.
As mentioned above, in the 6th embodiment, even remove the upper position shown in the dotted line when last chipware 32a returns, have width greater than A at the hinge portion 31 of initial position and the lap between the hinge portion at withdrawing position, this is because the cross section of hinge portion 31 has the cause of enough big area.Therefore, the path of magnetic flux is prevented from narrowing down, and has limited the loss of magnetic flux.
Though in the 6th embodiment, the whole vertical part of each upper and lower chipware 32a and 32b has big width,, also can have only hinge portion 31 and near have big width, as shown in figure 13.In this case, when the width of the horizontal component of last chipware 32a was A, hinge portion 31 was that the cylindrical part 36 of (A+a) constitutes by diameter, and jointed shaft 33 was inserted hinge portion along the direction perpendicular to axis.Therefore, last chipware 32a has a local structure that strengthens, and in the structure that this part is strengthened, has large diameter cylindrical part 36 as articulated elements.Equally, in following chipware 32b, the width of horizontal component is A, is (A+a) as the width of the end 37 of the vertical part of another articulated elements.Therefore, following chipware 32b has a local structure that strengthens, and in this structure, has large diameter end 37 as another articulated elements.
Equally, in the structure of Figure 13, even when last chipware 32a returns and withdraws the upper position shown in the dotted line to, also greater than A, this is because hinge portion 31 has enough causes of large-area cross section at the width of the hinge portion 31 of initial position and the lap between the hinge portion at withdrawing position.Therefore, can prevent that the path of magnetic flux from narrowing down, thereby limit the loss of magnetic flux.
The 7th embodiment
The induction heating equipment of seventh embodiment of the invention is described below with reference to Figure 14 and 15.
This induction heating equipment has the C type inductor 1A shown in Figure 14 and 15.Inductor 1A has a C sections core 41, and it forms by being assembled into the C type by first and second hinge portions 42 and 43.
The layout of inductor 1A makes the gap that forms between the core leg 3-2 of core leg 3-1 that the marginal portion 6a of material 6 can be by last chipware 41a and following chipware 41b.On upper and lower core leg 3-1 and 3-2, power supply (not drawing) is to heater coil 5A and 5B feed high-frequency current respectively for heater coil 5A and 5B.
First jointed shaft 44 is installed on the end relative with core leg 3-1 of chipware 41a.This end has a cylindrical surface 45 that forms around jointed shaft 44.Second jointed shaft 46 is installed in down on the end relative with core leg 3-2 of chipware 41b, and this end has a cylindrical surface 47 that forms around jointed shaft 46.
Middle chipware 41c is arranged between the cylindrical surface 47 of the cylindrical surface 45 of chipware 41a and following chipware 41b.The upper end of middle chipware 41c has the concave surface 48 of curvature and cylindrical surface 45 couplings, and its lower end has the concave surface 49 of curvature and cylindrical surface 47 couplings.Chipware 41c in the middle of the vertical part of C sections core comprises, and up and down chipware 41a and 41b respectively with the concave surface 48 of middle chipware 41c and the ends of 49 couplings.
Upper and lower and middle chipware 41a, 41b and 41c are fixed on the roller-way wheel 55.As shown in figure 15, first jointed shaft 44 of chipware 41a was inserted a sidepiece of roller-way wheel 55 in the supporting, and one first gear 51 is installed on first jointed shaft 44.Equally, second jointed shaft 46 of chipware 41b passes a sidepiece of roller-way wheel 55 under the supporting, and one second gear 52 identical with first gear, 51 diameters is installed on second jointed shaft 46.One end of one arm 53 links to each other with first jointed shaft 44, and the other end links to each other with an end of a jack 54.
When treating again heating material 6, according to the varied in thickness driving jack 54 of material with the induction heating equipment heating of said structure.Move according to the upper and lower of jack 54, arm 53 rotates around first jointed shaft 44.Because arm 53 is fixed on first jointed shaft 44, thereby axle 44 rotates with arm 53, thereby makes chipware 41a around 44 rotations of first jointed shaft.
On the other hand, second gear 52 that is meshed with first gear 51 that is connected in arm 53 to be rotating with the direction of the switched in opposite of first gear 51, thereby the following chipware 41b that is connected in second jointed shaft 46 (axle 46 is fixed on second gear 52) is rotated.Therefore, upper and lower chipware 41a and 41b rotate around separately jointed shaft with opposite direction simultaneously, thereby have adjusted the size in gap 4.
The weight of last chipware 41a makes oneself to fall, and also is used for lifting down chipware 41b by gear simultaneously.Therefore, if chipware 41a has identical weight with 41b, and first and second gears have identical diameter, so, can keep weight balancing between chipware 41a and the 41b.In other words, on jack 54, only need a little power that upper and lower chipware 41a and 41b are rotated.Therefore, chipware 41a and 41b need not counterweight, can be rotated by low-power machine.
When the leading section of material 6 or rearward end warpage, by jack 54 pusher arms 53, make upper and lower chipware 41a and 41b with opposite direction recession, can add broad gap 4.
The 8th embodiment
Now contrast the induction heating equipment that Figure 16 and 17 describes eighth embodiment of the invention.In this embodiment, the part similar in appearance to the 7th embodiment uses corresponding label.
The 8th embodiment adopts the C type inductor 1A shown in Figure 16 and 17.Inductor 1A has first gear 56 that links to each other with first jointed shaft 44, and links to each other with second jointed shaft 46, and diameter is greater than second gear 57 of first gear.Second gear 57 is fan-shaped so that can dilated diameter, and the gear teeth only are arranged on its circumferential section.Because the load that acts on the jack 54 increases with gearratio with being directly proportional, a counterweight 58 is installed on the horizontal-extending part 59 of chipware 41a.
In the induction heating equipment of said structure, because the diameter of first gear 56 is greater than the diameter of second gear 57, thereby go up the corner big number of degrees that with gearratio are directly proportional of the corner (promptly going up the circumferential distance that the core leg end of chipware 41a moves past) of chipware 41a than following chipware 41b.Narrow when the roller-way and the spacing between the ground of carrying material 6, thereby when chipware 41b can not fully move down down, said apparatus was very useful.In addition, because material 6 carries on roller-way, thereby downward warpage can ignore, and the warpage that makes progress then must take in.Therefore, the corner that must make chipware 41a is greater than the corner of chipware 41b down, removes so that chipware 41a is returned from the material of the warpage that makes progress.
Though in the 7th and the 8th embodiment, use jack 54 cursors 53, also can substitute jack 54 with cylinder.
The C type inductor 1A that uses in the 5th to the 8th embodiment can resemble and use the inductor among first to fourth embodiment.In this case, the a plurality of inductor 1A that adopt in each embodiment of the 5th to the 8th embodiment arrange in the one or both sides of material 6 along material 6 throughput directions, heater coil makes the flow direction of C type inductor 1A opposite with the flow direction of C type inductor 1B on the core leg of the C type inductor 1A of mutual vicinity and 1B.
The 9th embodiment
As shown in figure 30, the C type inductor of installing in induction heating equipment has and is used to cut off material 6 photothermal refractory slabs, that end relative with material 6 that it is installed in each core leg that is made of heater coil and C sections core end.Now consult Figure 18-26 and describe the various refractory slabs that can be applicable in the various embodiments described above.
The manufacturing process of refractory slab 60 shown in Figure 180 is: prepare a spiral plastic conduit 62, make its two ends be respectively equipped with connector 61a and 61b, the pourable cement that cast is adiabatic is embedded in wherein helix tube 62.Plastic conduit 62 is preferably the fluorocarbon of good heat resistance such as the pipe that tetrafluoroethene is made.In addition, though that synthetic resin has is flexible, make the mode bending that pipe 62 can be as required, it still has elasticity.In order to make pipe 62 keep spirality, refractory slab has structure shown in Figure 19.Specifically, pipe 62 partly passes the ring pipe joint that is fixed on the bolt 64, and 64 on bolt is fixed on the support plate 66 of the laminated sheet that comprises insulation.Support plate 66 is clipped between the end and refractory slab of core leg, as shown in figure 30.
That end relative that refractory slab 60 is installed in the core leg, cooling water with material 6 by pump from the cooling water tank (not shown) by plastic conduit 62.When the heater coil on the core leg is powered, the eddy current that flows in material 6 produces Joule heat, thus the marginal portion of heating material 6.Because material 6 was sent the near zone of refractory slab 60 continuously, refractory slab has been heated in its thermal radiation.But refractory slab 60 but is subjected to flowing through the cooling effect of the cooling water in the embedding plastic conduit 62 within it.Therefore, the heater coil side of refractory slab keeps low temperature, thus the protection heater coil, in order to avoid puncture insulation.
In addition because plastic conduit 62 is non-conductive, even thereby be in contact with one another when the part of pipe, short circuit phenomenon can not appear.Therefore, the lines that pipe can any needs of tool.In addition, even the refractory slab of making when adiabatic pourable cement forms the crack, iron powder and/or oxidation scale enter the crack, during contact tube 62, also can not form the path of magnetic flux near plastic conduit 62 places.Therefore, refractory slab can avoid being heated and melting.
In said structure, be embedded in the line style that U-shaped stainless steel bar in the cement 63 can keep synthetic resin 62.In addition, even cement 63 forms cracks, as the stainless steel bar 67 of reinforcement can prevent cement 63 burst.In addition, owing in U-shaped stainless steel bar 67, do not form the path of magnetic flux, thereby 67 a little heats of radiation of rod.
The modification of Figure 22 and 23 expression plastic conduits 62.
Though in above-mentioned modification, have only a plastic conduit 62 to make water cooling tube,, refractory slab also can have the structure that embeds many parallel plastic conduits 62.In addition, though plastic conduit 62 usefulness fluorocarbons such as tetrafluoroethene are made, also can use other made.In this case, because the environment temperature of pipe 62 is about 80 ℃ under the water-cooled state, thereby it will be able to bear 100 ℃ temperature.
Figure 24 represents a kind of refractory slab of making water cooling tube with earthenware.Specifically, many earthenwares 71 close arrangement in parallel to each other.Two opposite ends of every pipe 71 are connected with collector pipe 72a and 72b, thereby constitute water passage.The watered liquid cement 63 that cast is adiabatic will manage 71, and 72a and 72b embed, thereby make refractory slab 60 form one.
When the collector pipe 72a by inlet side when earthenware 71 is sent into cooling water, refractory slab 60 is subjected to cooling effect.The water that is heated is discharged from the collector pipe 72b of outlet side.
In said structure, because flat earthenware close arrangement in parallel to each other, cooling water can flow through in whole refractory slab, has therefore improved cooling effectiveness, has avoided the puncture of coil insulation.In addition, has the reinforcement that high-intensity earthenware 71 also is used as refractory slab 60.
Figure 25 represents a kind of refractory slab, and it is similar in appearance to refractory slab shown in Figure 24, and this refractory slab uses earthenware as aquaporin.Specifically, many earthenwares 71 close arrangement in parallel to each other.Two opposite ends of every earthenware 71 are connected with collector pipe 72a and 72b.This modification also comprises a plurality of dividing plates 73 that are provided with at certain intervals.Therefore make earthenware 71 and collector pipe 72a and 72b constitute the water passage of complications.
Compare with the structure of Figure 24, because cooling water flows through the path of complications, thereby refractory slab can be subjected to more even, effective cooling.
Though in the various embodiments described above and modification, use plastic conduit 62 and earthenware 71 to form nonmetallic water passage, also can use other non-metallic pipe such as the quartz ampoule that are not induction heated.
Form spiraled cavity 74 in the refractory slab 60 shown in Figure 26, cavity 74 is as water passage, and connector 61a and 61b are fixed on it is communicated with two opposite ends of cavity 74.This refractory slab 60 forms by following mode:
The line made from wax or other low-melting material connects connector 61a and 61b, the pourable cement of cast thermal insulation is so that imbed line then, with lost-wax process add Hot Cement 63 and make the line fusing that wax or other low melting material make and be removed, thereby form cavity 74 thereafter.
In this case, though a small amount of cooling water can leak to the surface of refractory slab 60 from cavity 74, this can't cause problem, this be because at the inductor upstream end to material 6 inject high pressure water so that remove the deoxidation scale, Shi material is sent to inductor more then.In addition, even cooling water spills,, can not cause short circuit in refractory slab 60 owing to there is not the metal water cooling tube.
Claims (7)
1. an induction heating equipment is used for the mobile marginal portion for the treatment of again heating material (6) of induction heating mode heating, and it comprises:
A plurality of C type inductor (1A that are arranged in parallel along material (6) moving direction, 1B), each inductor comprises a last chipware (32a with the first core leg (3-1) that is located at described material (6) top, 41a) have relative with the described first core leg (3-1) with one, with the marginal portion of described material (6) be clipped in the second core leg (3-2) therebetween following chipware (32b, 41b), and respectively around the described first and second core leg (3-1, heater coil 3-2) (5A, 5B);
Be used to be adjusted at each C type inductor (1A, described first and second core leg (3-1 1B), the adjusting device in the gap (4) that forms 3-2), described adjusting device comprises the described chipware (32a of going up of rotatably support, 41a) with described chipware (32b down, a hinge portion (31) 41a), described hinge portion (31) has chipware (32a on the formation, 41a) with respect to an end of the described first core leg (3-1) and have the first rotating articulated section on a curvature surface, and chipware (32b under formation, 41b) with respect to an end of the second core leg (3-2) and have the second rotating articulated section on a curvature surface, the described second rotating articulated section can be rotated and do not change gap between the described first and second rotating articulated sections substantially; And
One or more power supplys (7), be used for to described C type inductor (1A, heater coil 1B) (5A, 5B) feed high-frequency current is so that produce magnetic flux;
Wherein, the cross section of the described first rotating articulated section is greater than last chipware (32a, the cross section of the part of between the first rotating articulated section and the first core leg (3-1), extending 41a), the cross section of the described second rotating articulated section is greater than following chipware (32b, the cross section of the part of extending between the second rotating articulated section and the second core leg (3-2) 41b).
2. induction heating equipment as claimed in claim 1, it is characterized in that: described speeder has first jointed shaft (44) of the described first rotating articulated section of chipware on the rotatably support (41), second jointed shaft (46) of the second rotating articulated section of chipware on the rotatably support (41a), be installed in first gear (51 on first jointed shaft (44), 56), be installed on the second hinged roller (46), and with first gear (51,56) second gear (52 that is meshed, 57), and the transmission component (53,54) that is used for torque is reached first or second jointed shaft (44,46).
3. induction heating equipment as claimed in claim 2 is characterized in that: the diameter of first gear (56) is less than the diameter of second gear (57), and transmission device (53,54) reaches first jointed shaft (44) with torque.
4. induction heating equipment as claimed in claim 1; it is characterized in that also comprising that is arranged on each first and second core leg (3-1; end 3-2) is with protection C type inductor (1A; 1B); make it avoid treating again the photothermal refractory slab (60) of heating material (6); described refractory slab (60) comprises an adiabatic substrate (63); it is made of heat-insulating material; and has one corresponding to the first and second core leg (3-1; zone 3-2) with respect to the described end of material (6); described refractory slab (60) comprises that also one is located in the described adiabatic substrate (63), the water passage (62,71 that cooling water is therefrom flow through; 74); described water passage (62,71,74) is avoided induction heating.
5. induction heating equipment as claimed in claim 4 is characterized in that: described water passage comprise one that constitute by non-metallic pipe and embed water cooling tube (62) in the described adiabatic substrate (63).
6. induction heating equipment as claimed in claim 5 is characterized in that: described water cooling tube (62,71,74) is by plastic conduit, and earthenware or quartz ampoule constitute.
7. induction heating equipment as claimed in claim 4, it is characterized in that: described water passage comprises many non-metallic pipes (71,74) that embed in the described adiabatic substrate (63), makes non-metallic pipe (71,74) the layout that is parallel to each other, and a pair of collector pipe that constitutes by non-metallic pipe (71,74) (72a, 72b), collector pipe (72a, 72b) also embed in the adiabatic substrate (63), be communicated with non-metallic pipe (71,74) two ends respectively.
Applications Claiming Priority (15)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP162758/1994 | 1994-06-21 | ||
| JP162758/94 | 1994-06-21 | ||
| JP16275894 | 1994-06-21 | ||
| JP315529/1994 | 1994-11-25 | ||
| JP315529/94 | 1994-11-25 | ||
| JP31552994 | 1994-11-25 | ||
| JP120549/95 | 1995-04-21 | ||
| JP12054995A JP3397509B2 (en) | 1994-11-25 | 1995-04-21 | Heat-resistant plate of induction heating device |
| JP120549/1995 | 1995-04-21 | ||
| JP12970795A JP3156746B2 (en) | 1994-06-21 | 1995-04-28 | Induction heating device |
| JP129707/1995 | 1995-04-28 | ||
| JP129707/95 | 1995-04-28 | ||
| JP136061/95 | 1995-05-10 | ||
| JP136061/1995 | 1995-05-10 | ||
| JP13606195A JP3384647B2 (en) | 1995-05-10 | 1995-05-10 | Induction heating device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95107015A Division CN1082781C (en) | 1994-06-21 | 1995-06-21 | Induction heating device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200410033473.8A Division CN1538785B (en) | 1994-06-21 | 1995-06-21 | Fire-proof plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1399501A CN1399501A (en) | 2003-02-26 |
| CN1256005C true CN1256005C (en) | 2006-05-10 |
Family
ID=27526881
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200410033473.8A Expired - Lifetime CN1538785B (en) | 1994-06-21 | 1995-06-21 | Fire-proof plate |
| CN95107015A Expired - Lifetime CN1082781C (en) | 1994-06-21 | 1995-06-21 | Induction heating device |
| CNB011329386A Expired - Lifetime CN1256005C (en) | 1994-06-21 | 2001-09-11 | Induction heater |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200410033473.8A Expired - Lifetime CN1538785B (en) | 1994-06-21 | 1995-06-21 | Fire-proof plate |
| CN95107015A Expired - Lifetime CN1082781C (en) | 1994-06-21 | 1995-06-21 | Induction heating device |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR960003524A (en) |
| CN (3) | CN1538785B (en) |
| AU (1) | AU687541B2 (en) |
| TW (1) | TW301522U (en) |
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|---|---|---|---|---|
| TW409486B (en) * | 1998-03-24 | 2000-10-21 | Toshiba Corp | Induction heating apparatus |
| TW200812934A (en) * | 2006-08-07 | 2008-03-16 | Messier Bugatti | Method for densification of porous articles |
| JP5466905B2 (en) * | 2009-09-16 | 2014-04-09 | 東芝三菱電機産業システム株式会社 | Induction heating apparatus and control method of induction heating apparatus |
| CN103286143B (en) * | 2012-02-27 | 2016-08-24 | 宝山钢铁股份有限公司 | Hot rolling slab Edge Heating Temperature Measure Control method |
| CN103582196B (en) * | 2012-07-26 | 2015-06-17 | 宝山钢铁股份有限公司 | Method and device for intelligently controlling magnetic field intensifier in induction heating process |
| WO2015078907A1 (en) * | 2013-11-29 | 2015-06-04 | Tetra Laval Holdings & Finance S.A. | An induction heating device |
| JP6391175B2 (en) * | 2015-10-06 | 2018-09-19 | 東芝三菱電機産業システム株式会社 | Induction heating device |
| CN105710523B (en) * | 2016-02-14 | 2018-05-01 | 汕头轻工机械厂有限公司 | A kind of close wound electromagnetic inductor of racetrack |
| CN105865015B (en) * | 2016-06-03 | 2020-04-03 | 唐山航清新能源有限公司 | Electromagnetic assembly for carrying out eddy current heating at air gap by adopting water cooling mode |
| CN110116141A (en) * | 2018-02-07 | 2019-08-13 | 宝山钢铁股份有限公司 | A kind of heating system of adaptive magnesium alloy board warm-rolling process temperature distribution |
| CN110193528A (en) * | 2019-06-10 | 2019-09-03 | 北京交通大学 | Gradient-heated and uniformly heated multifunctional DC induction heater structure can be achieved |
| CN111001770A (en) * | 2020-01-14 | 2020-04-14 | 包头联方高新技术有限责任公司 | Plate blank corner heater and heating method in continuous casting process |
| CN112366071B (en) * | 2020-10-19 | 2022-04-26 | 深圳市英威腾电气股份有限公司 | Frequency converter, three-phase reactor and winding method of three-phase reactor |
| CN113601951B (en) * | 2021-08-04 | 2022-10-11 | 德化县新佳兴印刷有限公司 | Screen printing machine equipment based on thermomagnetic technology and use method thereof |
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| JPS531614A (en) * | 1976-06-26 | 1978-01-09 | Toyo Alum Kk | Induction heating equipment |
| FR2583249B1 (en) * | 1985-06-07 | 1989-04-28 | Siderurgie Fse Inst Rech | DEVICE FOR INDUCTIVELY HEATING THE RIVES OF A METALLURGICAL PRODUCT AND VARIABLE GAP INDUCTOR |
| US4649249A (en) * | 1985-09-13 | 1987-03-10 | Rockwell International Corporation | Induction heating platen for hot metal working |
| JPS6298588A (en) * | 1985-10-25 | 1987-05-08 | 日本軽金属株式会社 | Electromagnetic induction heater |
| DE3908996C2 (en) * | 1989-03-18 | 1993-09-30 | Abb Patent Gmbh | Method of manufacturing a liquid heat sink |
| IT1229749B (en) * | 1989-05-17 | 1991-09-10 | Giovanni Arvedi | HEATING INDUCTION OVEN AND TEMPERATURE HOMOGENIZATION FOR THE LAMINATION OF THIN STEEL BELTS. |
| JP3254001B2 (en) * | 1991-04-08 | 2002-02-04 | ゼネラル・エレクトリック・カンパニイ | Integrated radiator for semiconductor module |
| DE4207607C1 (en) * | 1992-03-10 | 1993-09-23 | Otto Junker Gmbh, 52152 Simmerath, De |
-
1995
- 1995-06-16 AU AU21741/95A patent/AU687541B2/en not_active Expired
- 1995-06-16 TW TW085207925U patent/TW301522U/en unknown
- 1995-06-21 CN CN200410033473.8A patent/CN1538785B/en not_active Expired - Lifetime
- 1995-06-21 KR KR1019950016757A patent/KR960003524A/en not_active Application Discontinuation
- 1995-06-21 CN CN95107015A patent/CN1082781C/en not_active Expired - Lifetime
-
2001
- 2001-09-11 CN CNB011329386A patent/CN1256005C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| KR960003524A (en) | 1996-01-26 |
| AU2174195A (en) | 1996-01-18 |
| CN1538785A (en) | 2004-10-20 |
| CN1399501A (en) | 2003-02-26 |
| CN1538785B (en) | 2010-05-05 |
| AU687541B2 (en) | 1998-02-26 |
| TW301522U (en) | 1997-03-21 |
| CN1082781C (en) | 2002-04-10 |
| CN1120795A (en) | 1996-04-17 |
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Expiration termination date: 20150621 Granted publication date: 20060510 |