CN202738148U - Electromagnetic induction heating device - Google Patents
Electromagnetic induction heating device Download PDFInfo
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- CN202738148U CN202738148U CN 201220268675 CN201220268675U CN202738148U CN 202738148 U CN202738148 U CN 202738148U CN 201220268675 CN201220268675 CN 201220268675 CN 201220268675 U CN201220268675 U CN 201220268675U CN 202738148 U CN202738148 U CN 202738148U
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Abstract
The utility model relates to the technical field of electromagnetic induction heaters, in particular, relates to an electromagnetic induction heating device. The heating device comprises an electromagnetic heating controller, an excitation coil and a medium-high frequency transformer. A medium-high electric output end of the electromagnetic heating controller is electrically connected with an input end of the medium-high frequency transformer; an output end of the medium-high frequency transformer is connected with the excitation coil; the number of turns of the excitation coil is in a range of 2 to 10 turns with no-load inductance quantity being lower than 20 uH; a high-frequency copper wire is wound to form the excitation coil; and a plurality of fine copper wires are stranded to form the high-frequency copper wire. Without a cooling system required, the electromagnetic induction heating device of the utility model is of portable convenience when the device is used; the medium-high frequency transformer in the electromagnetic induction heating device can complement the insufficiency of the inductance quantity of the excitation coil, and therefore, with the electromagnetic induction heating device provided by the utility model, a suitable excitation coil can be made in a small space through winding, so that the electromagnetic induction heating device is suitable for heating a small area in a small-size circular metal tube and a small-size metal irregular part.
Description
Technical field
The utility model relates to the electromagnetic induction heater technical field, relates in particular to a kind of suitable micro metal pipe of cooling system and electromagnetic induction heater that the small-sized profiled piece of metal heats among a small circle of need not.
Background technology
Based on the Faradic electricity magnetic induction principle, electromagnetic induction heating technology is to use the method that improves ac frequency, the alternating current that order changes at a high speed flows through the magnetic line of force that coil can produce alternation, magnetic line of force through heating object forms the loop, in its cross section, produce induced current (being eddy current) and form thermal effect, make and be heated workpiece and generate heat rapidly, reach a kind of technology of purpose of other material of heating of metal itself or indirect and Metal Contact, and be widely used in the Field of Heat-treatment of metal, heating or the indirect field of non-magnetic non-conducting material and civilian kitchen range (electromagnetic oven) with magnetic conductance electric metal material, water heater and companion's heat etc. heat the field widely.
The related significant components of electromagnetic induction heating technology is magnet exciting coil, and magnet exciting coil can adopt copper, the silver or golden of electric conductivity excellence, but be limited to silver, golden bi-material is expensive, so generally adopt copper cash.The most important index of magnet exciting coil is inductance, when frequency certain, power requirement one regularly, the less then current requirements of inductance value is higher, so in the especially Metal Melting of medium-high frequency induction heating field, diathermanous field, when adopting the coil of low inductance (being lower than 10uH), general adopt higher operating frequency (such as 25KHz～100MHz), while current requirements high (generally surpassing 60A), so must adopt thicker hollow copper tubing, and adopt water-cooled or high wind to force cooling (in the situation of the little and high electric current of coil diameter by the hydronic mode of copper pipe to copper pipe at a high speed, also exist the magnetic line of force itself to respond to copper pipe, so the situation of copper pipe induction heating, so must need to force cooling).And when adopting the copper cash multiturn coil of high inductance, easily coiling goes out required high inductance, electric current is corresponding simultaneously can reduce, the copper cash of coil use can adopt thinner copper cash and design nonoverload (electric current is lower than the specified accurate live stream of coil copper cash) like this, then do not need thus to adopt water-cooled or air-cooled pressure cooling provision the technical method that adopt in Here it is domestic electromagnetic stove, molding machine heating field and large-scale workpiece heating, the hot field of companion.Here have a technology blind spot, adopt water-cooled copper can be fit to the heating of narrow workpiece as the way of magnet exciting coil, but need supplements outer water-cooled and air cooling equipment, cause machine weight heavy, volume is large, is not easy to carry; And the way of the real core copper cash magnet exciting coil of employing high inductance, machine volume and weight all are well suited for portable, but because inductance value is directly proportional with the number of turn of coiling, be heated workpiece such as fruit volume too small (such as the pipe of diameter 20～63mm, specify simultaneously the length of heating region to be no more than 30mm), limited space, the inductance value (number of turn is not enough) that is difficult to the regulation that coiling goes out, because narrow space, also be difficult to the thick copper lines of selecting the end face sectional area larger, therefore be difficult to be applicable to the heating of small workpiece narrow range.
Be the medium-high frequency induction heating multilayer sealing fastening pipe of ZL201020237693.3 such as China Patent No., China Patent No. is the medium-high frequency induction heating multi-sealing plastic pipe fitting of ZL201020237670.2, China Patent No. is the pre-socket joint induction heating welding plastic pipe of ZL201120138231.0, China Patent No. is the pre-socket joint induction heating welding plastic fastening type pipe fitting of ZL201120138204.3, China Patent No. is the medium-high frequency induction heating plastic pipe of ZL201020237685.9, China Patent No. is a kind of fastening type pipe fitting of ZL201020276351.0, China Patent No. is the multiple seal hot melting fastening type pipe fitting of ZL201020188986.7, above-mentioned all fitting structures, when adopting the medium-high frequency electromagnetic induction heating technology to the plastics of METAL HEATING PROCESS and indirect steel-plastics composite pipe ectonexine plastics and pipe fitting, all there is the narrow and small problem of the actual needs heat affected zone of pipe fitting (the corresponding pipe fitting of pipeline of DN16～63mm diameter especially, according to national standard and town and country construction industry standard, effective heated length of its pipe fitting generally only is 20～36mm, at the desired inductance value of the general electromagnetic induction controller of narrow space coiling like this (normal operation 60～300uH, such as the civilian electromagnetic oven inductance coil of normal operation 90uH then) possibility is minimum, so necessarily require to get final product so that the electromagnetic induction controller is started working in the coil scope of 2～10 circles, even but 10 circle coils, its inductance value also is difficult to surpass 20uH, if at this coil inductance weight range, the circuit design of electromagnetic induction controller is very complicated, not only expensive, domesticly also not yet grasp this circuit engineering and at present also not this application.
The more important thing is when pipeline is installed, when the situation that elbow, threeway occur and be plugged into an end of pipeline, circular magnet exciting coil is difficult or be inconvenient to very much to be set to pipe fitting and get on, but so consider magnet exciting coil is cut and embeds in the anchor clamps of a band closing device, with master-slave socket the coil breaking part is connected into one again in the clamping pipe fitting induction heating position or with magnet exciting coil directly around to pipe fitting, going, obviously, the Width that master-slave socket itself has is larger, and too much coil turn of while bothers when can bring coil to peg graft very much, failure rate is high; Adopting magnet exciting coil directly when going to pipe fitting, the number of turn of magnet exciting coil is fewer, and then operating efficiency is higher.So require the number of turn of magnet exciting coil more few better, had better not surpass 5 circles (inductance value can not surpass 10uH usually), like this, magnet exciting coil often just has good reliability under group operational environment of inserting, simultaneously, directly coiling just has higher operating efficiency to pipe fitting.In fact, above similar pipe fitting also can adopt medium-high frequency electromagnetic controller with water-cooling system (such as present high-frequency quenching, the medium-high frequency electromagnetic controller that melting is used), but obviously, if adopting the medium-high frequency electromagnetic controller with water-cooled or air cooling system (annotates, air cooling way there is no mature technology at present), only water-cooling system is exactly tens of kilogram weights, for small pipeline installing area and the parts heating field (such as the dismounting of automobile screw) that needs Portable heating, can't frequently not move owing to not having portability, so be not have practicality fully.
In the research that domestic patent of applying at present and technical staff are engaged in, aspect the research of Portable electromagnetic induction heating machine, the application study that few people heat for small space or miniature workpiece.Some patented technologies of applying for mainly for be the circuit design of electromagnetic induction controller and about the winding method of coil, also there is considerable patented technology to occur, but these technology of winding method about coil all do not take into full account the present technical merit of electromagnetic controller at least, and a supposed premise is in fact arranged: the inductance value that is exactly magnet exciting coil is can be according to the job requirement coiling success of electromagnetic controller.Electromagnetic induction controller host aspect does not carry out the application study that the low inductance coil can be worked yet.So true having caused relates to the Portable electromagnetic controller's design blank that workpiece heats among a small circle.Even dismantle this simple technical field in the heating of automobile screw, what also all adopt at present is the machine of Germany, Switzerland's import, and price is very expensive.
And for example China Patent Publication No. is the pipe welding fixture of CN202123664U, the electromagnetic induction pipe connects equipment, and Chinese patent application number is the pipe welding fixture of ZL201110174570.9, the electromagnetic induction pipe connects the e-quipment and pipe solenoid tube and connects method, related anchor clamps wherein, in the coiling of coil, do not make an explanation, be the installation of small-sized pipe fitting according to its application, because the anchor clamps of its design all do not state clearly the winding method (this is the technology point of a key) of magnet exciting coil, do not show that too its coil is to have the coil that is connected to form again closing structure after the disconnection, what can only be understood as employing is the arcuation coil of plane coiling, after bending, be arranged in the anchor clamps, be connected with the electromagnetic induction controller simultaneously.Obviously, reach the needed winding inductance quantity of electromagnetic induction controller, in the situation that do not adopt medium-high frequency up-flow step-down transformer, can only adopt the fine copper wire about 1 square millimeter, and coiling 80～120 circles reach the above basic inductance requirement of inductance requirement 60uH, in narrow space like this, not only coiling difficulty, the more important thing is, the electric current that passes through will be no more than 5A, and high frequency voltage is too high simultaneously, and not only heating efficiency concept order operation very low and manual clamping becomes more dangerous because of high voltage, easily cause personal injury, the pipe fitting that reaches appointment is installed effect, and required time is long (generally will arrive about 200 seconds) also, and the high thermal conductivity of steel pipe itself, can with steel-plastics composite pipe and pipe fitting plugging position in addition cover plastic molting above the steel pipe, make installation quality be greatly affected.And, above-mentioned patent has added thickly dotted magnetic stripe at the periphery of coil, magnetic flux when increasing work also just be based on for its operating efficiency can't improve, one of the uppity weakness of installation quality replenish, but this mode can't fundamentally overcome the above problems, and the making of anchor clamps will be very complicated.The more important thing is, its anchor clamps can only be for the pipe fitting of single diameter, if the pipe fitting profile is done certain change or for the pipe fitting of same specification various outer diameter, anchor clamps corresponding varying sized (the die sinking expense is surprising), for the field of electromagnetic induction heating pipe laying, cost is very high.
The utility model content
The purpose of this utility model is to provide for the deficiencies in the prior art a kind of and need not cooling system, is fit to micro metal pipe and the small-sized profiled piece of the metal mobile electromagnetic induction heater that heats among a small circle, is easy to carry.
To achieve these goals, the utility model provides a kind of electromagnetic induction heater, comprise electromagnetic heating controller, magnet exciting coil, also comprise medium/high frequency transformer, the medium-high frequency electricity output of described electromagnetic heating controller is electrically connected with the input of described medium/high frequency transformer, and the output of described medium/high frequency transformer is electrically connected with described magnet exciting coil; The number of turn of described magnet exciting coil is that 2～10 circles, unloaded inductance value are lower than 20uH, and described magnet exciting coil is to be formed by the high frequency copper wire winding, and described high frequency copper cash is to form by the multiply fine copper wire is stranded.
Preferably, described magnet exciting coil is formed by high frequency copper cash helically coiling, and described magnet exciting coil is the cylinder hollow shape; The internal diameter of described magnet exciting coil is 20～125mm, highly is 10～65mm.
Preferably, described magnet exciting coil is the cylinder hollow shape, and each circle of described magnet exciting coil forms one with the cylinder hollow shape of opening through axially neatly cutting, the two ends of the breaking part of each circle of described magnet exciting coil are respectively arranged with corresponding master-slave socket, form closing coil by the master-slave socket grafting during work, and magnet exciting coil is because adopt the stranded high frequency copper cash of multiply fine copper wire, and itself has flexibility.
Preferably, the described anchor clamps that place open-close type with the cylindric hollow magnet exciting coil correspondence of opening, described cylindric hollow magnet exciting coil with opening is formed by the high frequency copper wire winding, and described high frequency copper cash is by the stranded flexible high frequency copper cash that forms of multiply fine copper wire, and the breaking part of described cylindric hollow magnet exciting coil with opening connects by male and female copper plug formula; The internal diameter of described magnet exciting coil is 20～125mm, highly is 10～65mm.
Preferably, described magnet exciting coil is the cylinder hollow shape, and described magnet exciting coil is comprised of two half coil grafting that are the semicolumn hollow shape.
Preferably, described two half coil correspondences place the anchor clamps of open-close type, and each circle coil of the correspondence of described two half coils connects by male and female copper plug formula; The internal diameter of described magnet exciting coil is 20～125mm, highly is 10～65mm.
Preferably, the arc coil of described magnet exciting coil for being formed by the plane coiling of high frequency copper cash.
Preferably, described magnet exciting coil by place soft with on the high frequency copper cash connect and compose, described soft with on an end of high frequency copper cash be provided with the sub-plug connector of service message, described soft with on the other end of high frequency copper cash be provided with female electronic connector.
Preferably, described electromagnetic heating controller is provided with for civil power being converted to galvanic rectification circuit, being used for direct current is converted to the control circuit of medium-high frequency electricity, the input of described rectification circuit is electrically connected with the mains electricity input end of described electromagnetic heating controller, the output of described rectification circuit is electrically connected with the input of described control circuit, and the output of described control circuit is electrically connected with the medium-high frequency of described electromagnetic heating controller electricity output; The frequency of the alternating current of described medium-high frequency electricity output output is that 5～36KHz, size of current are 2～15A.
Preferably, described medium/high frequency transformer is the up-flow step-down transformer, and the turn(s) ratio of described medium/high frequency transformer is 10:1～1:1, and the overall inductance amount of described medium/high frequency transformer is greater than 20uH; Described medium/high frequency transformer is with after described magnet exciting coil is connected, and the whole unloaded inductance value of described medium/high frequency transformer and described magnet exciting coil is more than the 40uH; Coil in the described medium/high frequency transformer adopts the high frequency copper wire winding to form, and described high frequency copper cash is to form by the multiply fine copper wire is stranded.
Preferably, described fine copper wire is enamel covered wire or silver-coated copper wire, and the sectional area of described fine copper wire is 2～40 square millimeters.
Preferably, described electromagnetic heating controller and described medium/high frequency transformer are for being built in the casing.
Preferably, the testing standard of described magnet exciting coil inductance value is: use the drawn data of unloaded coil under digital electric bridge, 1KHz, the series resonance shelves condition.
The utility model beneficial effect is: the utility model comprises electromagnetic heating controller, magnet exciting coil, medium/high frequency transformer, the medium-high frequency electricity output of electromagnetic heating controller is electrically connected with the input of medium/high frequency transformer, and the output of medium/high frequency transformer is electrically connected with magnet exciting coil; The number of turn of magnet exciting coil is that 2～10 circles, unloaded inductance value are lower than 20uH, and magnet exciting coil is to be formed by the high frequency copper wire winding, and the high frequency copper cash is to form by the multiply fine copper wire is stranded.Because the utility model adopts and to form magnet exciting coil by the stranded high frequency copper wire winding of multiply fine copper wire, so the utility model need not to adopt cooling system, make the utility model movement that is easy to carry in use; And, medium/high frequency transformer of the present utility model can replenish the deficiency of magnet exciting coil inductance value, make the utility model go out suitable magnet exciting coil in the narrow space coiling, thereby make the utility model be fit to the among a small circle heating of micro metal pipe and the small-sized profiled piece of metal.
Further, magnet exciting coil of the present utility model is the cylinder hollow shape, and magnet exciting coil can be arranged to be with the folding shape, corresponding coil correspondence places the anchor clamps of open-close type in the magnet exciting coil, makes magnet exciting coil of the present utility model can be conveniently used in the heat welded that elbow, threeway are plugged into the situations such as pipeline.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the magnet exciting coil of the utility model embodiment 2.
Fig. 3 is the side structure schematic diagram of the magnet exciting coil of the utility model embodiment 2.
Fig. 4 is the decomposing schematic representation of the magnet exciting coil of the utility model embodiment 2.
Fig. 5 is the structural representation of the magnet exciting coil of the utility model embodiment 3.
Fig. 6 is the structural representation of the magnet exciting coil of the utility model embodiment 4.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Embodiment 1
Please refer to Fig. 1, the utility model provides a kind of electromagnetic induction heater, comprise electromagnetic heating controller 1, magnet exciting coil 2, medium/high frequency transformer 3, the medium-high frequency electricity output 12 of electromagnetic heating controller 1 is electrically connected with the input of medium/high frequency transformer 3, makes electromagnetic heating controller 1 the medium-high frequency electricity that is converted to can be exported to medium/high frequency transformer 3; The output of medium/high frequency transformer 3 is electrically connected with magnet exciting coil 2, make medium/high frequency transformer 3 can the medium-high frequency electric boost rectification with input after, export to again magnet exciting coil 2, workpiece is heated by electromagnetic induction by magnet exciting coil 2; Wherein, the number of turn of magnet exciting coil 2 is 2～10 circles (for example: 4 circles that the present embodiment is selected), unloaded inductance value is lower than the 20uH(microhenry), to improve the operating efficiency of magnet exciting coil 2; Magnet exciting coil 2 is to be formed by 21 coilings of high frequency copper cash, and high frequency copper cash 21 is to form by the multiply fine copper wire is stranded, makes the utility model need not to adopt cooling system, and movement in use is easy to carry.
In the present embodiment, magnet exciting coil 2 is formed by high frequency copper cash 21 helically coilings, and magnet exciting coil 2 is the cylinder hollow shape, with for the steel pipe pipe heating of rule or the ectonexine plastics indirect of steel-plastics composite pipe; Wherein, the internal diameter of magnet exciting coil 2 is 20～125mm(millimeter), highly be 10～65mm, to mate the tubing of corresponding needs heating.
Wherein, electromagnetic heating controller 1 is provided with for civil power being converted to galvanic rectification circuit, being used for direct current is converted to the control circuit of medium-high frequency electricity, the input of rectification circuit is electrically connected with the mains electricity input end 11 of electromagnetic heating controller 1, the output of rectification circuit is electrically connected with the input of control circuit, and the output of control circuit is electrically connected with the medium-high frequency electricity output 12 of electromagnetic heating controller 1; The frequency of the alternating current of medium-high frequency electricity output 12 outputs is 5～36KHz(KHz), size of current is 2～15A(peace); Certainly, be 50Hz or 60Hz in the frequency of the above-mentioned civil power of China, operating voltage is the 220V(volt) or 380V; And in the situation that do not consider load (being under the idle condition), magnet exciting coil 2 work overall inductance require more than or equal to 40uH; Be provided with Hall current sensor in the electromagnetic heating controller 1, for detection of the current values of output medium-high frequency electricity.
Wherein, medium/high frequency transformer 3 is the up-flow step-down transformer, and the turn(s) ratio of medium/high frequency transformer 3 is 10:1～1:1, and namely the input line number of turns of medium/high frequency transformer 3 is 10:1～1:1 with the ratio of the output line number of turns; The overall inductance amount of medium/high frequency transformer 3 is greater than 20uH; Medium/high frequency transformer 3 is with after magnet exciting coil 2 is connected, and medium/high frequency transformer 3 is more than the 40uH with the whole unloaded inductance value of described magnet exciting coil; Coil in the medium/high frequency transformer 3 adopts the high frequency copper wire winding to form too, and the high frequency copper cash also is to form by the multiply fine copper wire is stranded; The effect of medium/high frequency transformer 3 is the up-flow step-down, replenishes simultaneously the deficiency of magnet exciting coil 2 inductance, the current commutates to 2 that medium/high frequency transformer 3 can be exported electromagnetic heating controller 1～150A.When the turn(s) ratio of medium/high frequency transformer 3 was 1:1, medium/high frequency transformer 3 itself became an inductance, and only played the effect of the inductance that increases operating circuit.
Wherein, the fine copper wire of magnet exciting coil 2 is enamel covered wire or silver-coated copper wire, and the sectional area of fine copper wire is 2～40 square millimeters; The inductance value of magnet exciting coil 2 is 0.1～20uH under idle condition, and interior diameter is 20～125mm, and the degree of depth is 10～65mm, and its inductance measurement standard is for using the drawn data of unloaded coil under digital electric bridge, 1K Hz, the series resonance shelves condition.
In the present embodiment, electromagnetic heating controller 1 and medium/high frequency transformer 3 are arranged for dividing, and certainly, according to needs of production, described electromagnetic heating controller 1 and medium/high frequency transformer 3 also can be built in the casing, are not limited only to the structure into the present embodiment.
When this electromagnetic heating controller 1 work, be plugged in the small-sized workpiece (the small-sized maximum gauge of workpiece that is heated is less than or equal to the maximum inner diameter of magnet exciting coil 2) that is heated of magnet exciting coil 2 interior hollow positions, can make the rapid heating of workpiece reach the purpose of other material of heating of metal itself or indirect and Metal Contact.For example: the magnet exciting coil 2 of the present embodiment can be inserted in steel pipe pipe or the steel-plastics composite pipe, by the ectonexine plastics indirect of electromagnetic induction principle to the heating of steel pipe pipe or steel-plastics composite pipe.Wherein, but the metal that the utility model is applicable to heat is necessary for magnetic conduction and conductive metal, such as steel, iron, magnetic stainless steel etc., especially is fit to for diameter range at the cylindric workpiece of 20mm～110mm, the among a small circle homogeneous heating of steel pipe.
Please refer to Fig. 2～4, be embodiment 2 of the present utility model, the difference of the present embodiment and embodiment 1 is, magnet exciting coil 2 is the cylinder hollow shape, and magnet exciting coil 2 is pegged graft by two half coils 22 that are the semicolumn hollow shape and formed.More particularly, two half coil 22 correspondences place the anchor clamps 23 of open-close type, and namely a half coil 22 places semicircular anchor clamps 23, and another half coil 22 places another semicircular anchor clamps 23; One end of two half coils 22 connects by metal folding spare 24, and the other end of two half coils 22 is inserted 252 hair styles by male and female copper and connected, for example: public copper is set on the half coil 22 inserts 251, corresponding female copper is set on another half coil 22 inserts 252; The internal diameter of magnet exciting coil 2 is 20～125mm, highly is 10～65mm, with the ectonexine plastics indirect for steel-plastics composite pipe.
The magnet exciting coil 2 of the present embodiment in use, as long as open first anchor clamps 23, one end of two half coils 22 is opened, be that male copper is inserted 251 and inserted 252 with female copper and separate, sandwiched steel-plastics composite pipe etc. needs the workpiece of heating again, makes male copper insert 251 and inserts 252 with female copper and peg graft mutually, i.e. two half coil 22 closures, consist of closing coil, and the workpiece of the needs heating such as steel-plastics composite pipe is positioned at closing coil, thereby by electromagnetic induction principle the workpiece that the needs such as steel-plastics composite pipe heat heated.Because the magnet exciting coil 2 of the present embodiment be retractable structure, so can be conveniently used in the heat welded that elbow, threeway are plugged into the situations such as pipeline.
Other structure of the present embodiment is identical with embodiment 1, does not repeat them here.
Please refer to Fig. 5, be embodiment 3 of the present utility model, the difference of the present embodiment and embodiment 1 is, the arc coil of magnet exciting coil 2 for being formed by the 21 plane coilings of high frequency copper cash, be that magnet exciting coil 2 is for plane, by irregular bending, with the heating for irregular miniature workpiece.Certainly, the shape of workpiece of heating as required, described magnet exciting coil 2 also can be made the shape with the workpiece coupling, makes magnet exciting coil 2 more be convenient to workpiece is heated, and is not limited only to the shape selected for the present embodiment.
The magnet exciting coil 2 of the present embodiment can with magnet exciting coil 2 near irregular miniature workpiece (for example: be installed in the screw in the automobile environment), heat irregular miniature workpiece by electromagnetic induction principle in use.
Other structure of the present embodiment is identical with embodiment 1, does not repeat them here.
Embodiment 4
Please refer to Fig. 6, be embodiment 4 of the present utility model, the difference of the present embodiment and embodiment 1 is, magnet exciting coil 2 softly connects and composes with the high frequency copper cash 21 on 28 by placing, a soft end with the high frequency copper cash 21 on 28 is provided with the sub-plug connector 271 of service message, the soft other end with the high frequency copper cash 21 on 28 is provided with female electronic connector 272, pegs graft mutually with female electronic connector 272 of the other end when the sub-plug connector 271 of the service message of high frequency copper cash 21 1 ends, namely forms closing coil.
The magnet exciting coil 2 of the present embodiment in use, can be wrapped on the workpiece that needs heating with 28 by soft, again the sub-plug connector 271 of service message is pegged graft mutually with female electronic connector 272, form closing coil, thereby heat by the workpiece of electromagnetic induction principle to the needs heating.Because the magnet exciting coil 2 of the present embodiment is arranged on soft being with on 28, thus can fold arbitrarily, and be fixed on easily on the workpiece that needs heating.
Other structure of the present embodiment is identical with embodiment 1, does not repeat them here.
Should be noted that at last; above embodiment is only in order to illustrate the technical solution of the utility model; but not to the restriction of the utility model protection range; although with reference to preferred embodiment the utility model has been done to explain; those of ordinary skill in the art is to be understood that; the technical solution of the utility model is made amendment or is equal to replacement, all belong to protection range of the present utility model.
Claims (13)
1. electromagnetic induction heater, comprise electromagnetic heating controller, magnet exciting coil, it is characterized in that: also comprise medium/high frequency transformer, the medium-high frequency electricity output of described electromagnetic heating controller is electrically connected with the input of described medium/high frequency transformer, and the output of described medium/high frequency transformer is electrically connected with described magnet exciting coil; The number of turn of described magnet exciting coil is that 2～10 circles, unloaded inductance value are lower than 20uH, and described magnet exciting coil is to be formed by the high frequency copper wire winding, and described high frequency copper cash is to form by the multiply fine copper wire is stranded.
2. electromagnetic induction heater according to claim 1, it is characterized in that: described magnet exciting coil is formed by high frequency copper cash helically coiling, and described magnet exciting coil is the cylinder hollow shape; The internal diameter of described magnet exciting coil is 20～125mm, highly is 10～65mm.
3. electromagnetic induction heater according to claim 1, it is characterized in that: described magnet exciting coil is the cylinder hollow shape, and each circle of described magnet exciting coil forms one with the cylinder hollow shape of opening through axially neatly cutting, the two ends of the breaking part of each circle of described magnet exciting coil are respectively arranged with corresponding master-slave socket, form closing coil by the master-slave socket grafting during work.
4. electromagnetic induction heater according to claim 3, it is characterized in that: the described anchor clamps that place open-close type with the cylindric hollow magnet exciting coil correspondence of opening, described cylindric hollow magnet exciting coil with opening is formed by the high frequency copper wire winding, and described high frequency copper cash is by the stranded flexible high frequency copper cash that forms of multiply fine copper wire, and the breaking part of described cylindric hollow magnet exciting coil with opening connects by male and female copper plug formula; The internal diameter of described magnet exciting coil is 20～125mm, highly is 10～65mm.
5. electromagnetic induction heater according to claim 1, it is characterized in that: described magnet exciting coil is the cylinder hollow shape, and described magnet exciting coil is pegged graft by two half coils that are the semicolumn hollow shape and formed.
6. electromagnetic induction heater according to claim 5, it is characterized in that: described two half coil correspondences place the anchor clamps of open-close type, and each circle coil of the correspondence of described two half coils connects by male and female copper plug formula; The internal diameter of described magnet exciting coil is 20～125mm, highly is 10～65mm.
7. electromagnetic induction heater according to claim 1 is characterized in that: the arc coil of described magnet exciting coil for being formed by the plane coiling of high frequency copper cash.
8. electromagnetic induction heater according to claim 1, it is characterized in that: described magnet exciting coil by place soft with on the high frequency copper cash connect and compose, described soft with on an end of high frequency copper cash be provided with the sub-plug connector of service message, described soft with on the other end of high frequency copper cash be provided with female electronic connector.
9. according to claim 2,3,5,7 or 8 described electromagnetic induction heaters, it is characterized in that: described electromagnetic heating controller is provided with for civil power being converted to galvanic rectification circuit, being used for direct current is converted to the control circuit of medium-high frequency electricity, the input of described rectification circuit is electrically connected with the mains electricity input end of described electromagnetic heating controller, the output of described rectification circuit is electrically connected with the input of described control circuit, and the output of described control circuit is electrically connected with the medium-high frequency of described electromagnetic heating controller electricity output; The frequency of the alternating current of described medium-high frequency electricity output output is that 5～36KHz, size of current are 2～15A.
10. according to claim 2,3,5,7 or 8 described electromagnetic induction heaters, it is characterized in that: described medium/high frequency transformer is the up-flow step-down transformer, the turn(s) ratio of described medium/high frequency transformer is 10:1～1:1, and the overall inductance amount of described medium/high frequency transformer is greater than 20uH; Described medium/high frequency transformer is with after described magnet exciting coil is connected, and the whole unloaded inductance value of described medium/high frequency transformer and described magnet exciting coil is more than the 40uH; Coil in the described medium/high frequency transformer adopts the high frequency copper wire winding to form, and described high frequency copper cash is to form by the multiply fine copper wire is stranded.
11. according to claim 2,3,5,7 or 8 described electromagnetic induction heaters, it is characterized in that: described fine copper wire is enamel covered wire or silver-coated copper wire, and the sectional area of described fine copper wire is 2～40 square millimeters.
12. according to claim 2,3,5,7 or 8 described electromagnetic induction heaters, it is characterized in that: described electromagnetic heating controller and described medium/high frequency transformer are for being built in the casing.
13. electromagnetic induction heater according to claim 1 is characterized in that, the testing standard of described magnet exciting coil inductance value is: use the drawn data of unloaded coil under digital electric bridge, 1KHz, the series resonance shelves condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268675 CN202738148U (en) | 2012-06-07 | 2012-06-07 | Electromagnetic induction heating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220268675 CN202738148U (en) | 2012-06-07 | 2012-06-07 | Electromagnetic induction heating device |
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| CN202738148U true CN202738148U (en) | 2013-02-13 |
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| CN 201220268675 Expired - Fee Related CN202738148U (en) | 2012-06-07 | 2012-06-07 | Electromagnetic induction heating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102917483A (en) * | 2012-06-07 | 2013-02-06 | 杨蒙 | Electromagnetic induction heating device |
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2012
- 2012-06-07 CN CN 201220268675 patent/CN202738148U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102917483A (en) * | 2012-06-07 | 2013-02-06 | 杨蒙 | Electromagnetic induction heating device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20180607 |