CN101742748A - Industrial electromagnetic induction heating device - Google Patents
Industrial electromagnetic induction heating device Download PDFInfo
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- CN101742748A CN101742748A CN200910263623A CN200910263623A CN101742748A CN 101742748 A CN101742748 A CN 101742748A CN 200910263623 A CN200910263623 A CN 200910263623A CN 200910263623 A CN200910263623 A CN 200910263623A CN 101742748 A CN101742748 A CN 101742748A
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- electromagnetic induction
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Abstract
The invention provides an industrial electromagnetic induction heating device. The external circumference of a charging barrel is provided with an insulating layer; an electromagnetic coil is coiled on the insulating layer; the outer periphery of the electromagnetic coil is provided with a complete electromagnetic shielding layer; the electromagnetic shielding layer is connected with an electromagnetic eliminator; and a metallic cover covers outside the electromagnetic shielding layer and is connected with the electromagnetic eliminator. The complete closed electromagnetic shielding layer and electromagnetic radiation eliminating loop can efficiently eliminate the electromagnetic radiation to ensure the equipment safety and the personal safety.
Description
Technical field
The present invention relates to electromagnetic induction heater, be specifically related to a kind of industrial electromagnetic induction firing equipment with safe shielding apparatus.
Background technology
In plastic processing industries such as plastic shaping, blowing, granulations, its heating means are resistance infrared heating at present, have shortcomings such as the heat efficiency is low, the temperature departure big, initial start length heating time.
At first, resistance heating itself exists the heat efficiency low, resistance heating is taked heat conducting mode, heat conducts by the mode of plastics in resistance wire → insulating barrier → cartridge shell → barrel, speed is slow, thermal loss is big, only the heat of resistance contact barrel one side has obtained utilization, the heat of an other side is dispersed in the air, cause a large amount of energy wastes, also increased simultaneously the temperature in workshop,, increased the allocating power of energy consumption and air-conditioning equipment there being temperature controlled dust proof workshop to increase the burden of air-conditioning again.
Secondly, because temperature element is near resistance heating element, the temperature of plastics has the errors of 5～10 degree in temperature that records and the barrel, the control of influence plasticizing, thus influence the quality of product.
Once more, initial start is long heating time, because the traditional resistor efficiency of heating surface is low, equipment will be waited for 1～2 hour when initial start, influenced the utilization ratio of equipment.
The electromagnetism heating principle is that AC power is converted to direct current through rectifier, make direct current become high-frequency alternating current (though the electric conversion rate of electromagnetic induction heating and be directly proportional of 10～99KHZ through the High frequency power transducer again by the electric current I of solenoid and the frequency f of power supply, but the high frequency electromagnetic radiation that surpasses 100KHZ according to scientific research should not use in this type of field), again high-frequency alternating current is added on the electromagnetic induction coil, produce high-frequency alternating magnetic field thus, its magnetic line of force penetrates the thermal insulation layer of insulation, act directly on the barrel and screw rod of containing oxygen iron material, produce vortex flow at barrel and screw rod inside because of the induction of high frequency alternating electromagnetism, the internal resistance that vortex flow overcomes barrel and screw rod produces thermal source.
In recent years, the mode that adopts electromagnetic induction heating to substitute the traditional resistor heating is arranged, but all have deficiency, do not consider that particularly magnetic radiation that high frequency magnetic field causes is to equipment and personal harm on every side in heating at design aspect.Because the development most equipment of electron controls technology all needs a large amount of circuit boards or light current components and parts to control now, machine has adopted a large amount of microelectronics control circuit boards, be in the instability that can cause apparatus control system in the strong magnetic radiation environment for a long time, even the damage of wiring board.Superpower electromagnetic wave has been used military field and has come moment to destroy navigation or other electronic equipments of enemy's aircraft; Magnetic radiation also can produce harm to the person of working for a long time equally around equipment, science proof electromagnetic radiation energy causes the change of cytochemistry balance, some change can cause canceration, also can cause hereditary material DNA injury in the cells in vivo, this influence even may pass to the next generation, cause newborn generation deformity, congenital leukaemia.Therefore when determining the high-frequency electromagnetic induction heating design of this type of power, must fully take into account the security protection of high-frequency electromagnetic to the equipment and the person up to tens KW.
Application number is that 01114569.2 Chinese patent application discloses screw extrusion equipment electromagnetic heating method and device, outside the equipment barrel, increase " mountain " font magnetic core, wasted high frequency magnetic field, can produce unusual intensification, do not considered the harm of magnetic radiation the equipment and the person.
Application number is that 200910045227.7 Chinese patent application discloses electromagnetic induction heating safe shielding apparatus for industry, this scheme is not provided with the device of elimination more than magnetic radiation, and this electromagnetic radiation shielding device has the leakage field gap, exist the deficiency that effectively ELECTROMAGNETIC RADIATION SHIELDING also to be eliminated, the shielding scheme complexity of its design, the cost height.
The patent No. is that 200820010344.0 Chinese patent discloses a kind of hyperfrequency power supply electromagnetic heater, adopt the mode of the hyperfrequency electromagnetism heating of 100KHZ～1MHZ, do not take sufficient electromagnetic protection measure again, this scheme is abnormally dangerous, very harmful to the equipment and the person far surpassed the world and the relevant regulations of China aspect anti-electromagnetic radiation.
The patent No. is that the Chinese patent of 200820044639.X discloses plastic cement machine electromagnetic heater, adopt the electromagnetic induction coil uniform winding at the barrel outermost layer, barrel increases thermal insulation layer outward, the cooling pipe of making of aluminum or metal material made of copper comes the way control temperature anomaly of cools barrel, and the way that adds hot channel on the thermal insulation layer of taking causes efficient low and to the waste of heating energy source in early stage especially.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of industrial electromagnetic induction heating device is provided.
Purpose of the present invention is achieved through the following technical solutions:
Industrial electromagnetic induction heating device, the cylindrical of barrel is provided with insulated thermal insulating layer, solenoid is wound on the insulated thermal insulating layer, and characteristics are: the outer periphery at described solenoid is equipped with complete electro-magnetic screen layer, and described electro-magnetic screen layer links to each other with the electromagnetism cancellation element.
Further, above-mentioned industrial electromagnetic induction heating device, the outside of described electro-magnetic screen layer is covered with the metal cap body, and the metal cover body links to each other with the electromagnetism cancellation element.
Further, above-mentioned industrial electromagnetic induction heating device, described electromagnetism cancellation element are a connecting line that links to each other with zero-power line or equipment ground wire.
Further, above-mentioned industrial electromagnetic induction heating device, described electro-magnetic screen layer are the complete electro-magnetic screen layer of one or more compositions of electric conducting materials such as metallic plate, metal spraying material, conductive film layer, electrically-conducting paint layer, conduction charcoal slurry layer, conductive fabric, conductive paper, conductive plastics.The material of described insulated thermal insulating layer is a flexible insulating material.
Again further, above-mentioned industrial electromagnetic induction heating device, the operating frequency of described solenoid is 10KHZ～99KHZ.
Again further, above-mentioned industrial electromagnetic induction heating device, described solenoid is arranged on the insulated thermal insulating layer with segmented individual layer or segmented multilayer, in the periphery of every section solenoid complete electro-magnetic screen layer is set respectively.
Substantive distinguishing features and obvious improvement that technical solution of the present invention is outstanding are mainly reflected in:
Modern design of the present invention, the loop is eliminated in complete closed electromagnetic screen and electromagnetic radiation can eliminate electromagnetic radiation, assurance equipment and personal safety expeditiously; Reasonably the coil configuration structure has been simplified the heat radiation setting of extra increase, and is simple for structure, energy-conservation.This equipment division substitutes the traditional resistor mode of heating of industries such as present food, chemical industry and plastic shaping, raise the efficiency, save the energy greatly, be applicable to the containing oxygen iron material that needs heating pipeline, in field of plastics processing such as the non-oxygen iron substance pipeline of screw rod or plastic shaping that existing screw rod has barrel again, blowing, granulation are arranged.
Description of drawings
Below in conjunction with accompanying drawing technical solution of the present invention is described further:
Fig. 1: the schematic diagram of integral type electromagnetic armouring structure of the present invention;
Fig. 2: the schematic diagram of the split type electromagnetic armouring structure of the present invention;
Fig. 3: the cross section structure schematic diagram of apparatus of the present invention.
The implication of each Reference numeral sees the following form among the figure:
| Reference numeral | Implication | Reference numeral | Implication | Reference numeral | Implication |
| ??1 | Screw rod | ??2 | Barrel | ??3 | Insulated thermal insulating layer |
| ??4 | Solenoid | ??5 | Electro-magnetic screen layer | ??6 | The metal cover body |
| ??7 | Ground wire | ??S1 | Temperature-measuring element | ??S2 | Temperature-measuring element |
| ??S3 | Temperature-measuring element | ??C1 | Electromagnetism transforms control circuit | ??C2 | Electromagnetism transforms control circuit |
| ??C3 | Electromagnetism transforms control circuit |
Embodiment
As shown in Figure 1, industrial electromagnetic induction firing equipment with safe shielding apparatus, screw rod 1 places barrel 2, the cylindrical of barrel 2 is provided with insulated thermal insulating layer 3, solenoid 4 is wound on the insulated thermal insulating layer 3, solenoid 4 heats with different power electromagnet coils according to the heat different mining of demand for heat, and the operating frequency of solenoid 4 is 10KHZ～99KHZ; Outer periphery at solenoid 4 is equipped with complete electro-magnetic screen layer 5, electro-magnetic screen layer 5 circumferentially is being closed complete structure, rather than segmented assembly is formed, electro-magnetic screen layer 5 links to each other with the electromagnetism cancellation element, the electromagnetism cancellation element is a connecting line that links to each other with zero-power line or equipment ground wire, adopts the mode of the zero line of direct earth connection or single-phase three-jaw attaching plug to connect; Temperature-measuring element S1, temperature-measuring element S2 and temperature-measuring element S3 are installed on barrel 2, temperature-measuring element (S1, S2, S3) directly contacts with barrel 2, guarantee the accuracy measured, temperature-measuring element S1 transforms control circuit C1 with electromagnetism and links to each other, temperature-measuring element S2 transforms control circuit C2 with electromagnetism and links to each other, and temperature-measuring element S3 transforms control circuit C3 with electromagnetism and links to each other.As Fig. 3, the outside of electro-magnetic screen layer 5 is covered with metal cap body 6, and metal cover body 6 links to each other with the electromagnetism cancellation element; Ground wire 7 is connected with electro-magnetic screen layer 5 and metal cover body 6, and the electromagnetic radiation that solenoid 4 produces is absorbed by complete electro-magnetic screen layer 5 and metal cover body 6, connects the earth elimination of releasing by ground wire 7 again.Wherein, the profile of metal cover body 6 can be square, circular or other are special-shaped, and the metal cover body is selected conductive metallic material for use, and stainless steel, aluminium sheet, iron plate, copper coin, alloy material etc. are specifically arranged.
As shown in Figure 2, solenoid 4 is arranged on the insulated thermal insulating layer 3 with segmented individual layer or segmented multilayer, periphery at every section solenoid is provided with complete electro-magnetic screen layer respectively, as required single solenoid is carried out electromagnetic shielding, and ground wire 7 connects the earth elimination of releasing.
Solenoid 4 is arranged and is adopted the segmented single or multiple lift evenly to arrange, because each section temperature requirements in the make-up machine work on the barrel 2 is different, in general be divided into three sections, fluxing zone, preheating section and feeding section, wherein the fluxing zone temperature is up to about 250 degrees centigrade, and preheating section is relatively low, the demand temperature that adds feed bin is lower, according to the difference of institute's calorific requirement, the segmented different solenoid of arranging is controlled its temperature respectively outside barrel.Big or small solenoid according to power can also can multilayer be arranged by individual layer, the plasticizing energy needed of injection molding machine plastics is except that the electric heating part, origin of heat main in operate as normal is in screw rod rotation and mobile friction and the shearing that brings, because screw rod 1 and barrel 2 are good conductors of heat, the rotation of barrel inner screw and when mobile in its temperature and the barrel temperature of plastics be more or less the same, screw rod 1 all adopts the identical or close alloy material of the coefficient of expansion to make with barrel 2, the internal diameter of the diameter of screw rod and barrel can expand simultaneously under heating state, can't cause the stuck of screw rod and barrel because of heating.Solenoid 4 segmenteds are evenly arranged, and can avoid the difference of temperature requirements and increase the heat radiation of air or cooling water metallic conduit.
Solenoid 4 is wrapped in outside the barrel of the barrel of containing oxygen iron material or non-oxygen iron material matter, and plastic molding press barrel and screw rod are the alloy material of containing oxygen iron composition, has the material of metallicses such as iron content just can heat as long as solenoid is inner.
Insulated thermal insulating layer 3 is the extraordinary flexible insulation material of effect of heat insulation, the interior conduction composition that do not contain.In use the insulating material of hard is not easy to form complete heat-insulation layer outside barrel, and manufacturing and installation are all inconvenient, so adopt the more suitable of flexibility.
Electromagnetism transforms the single solenoid of control that control circuit can be independent, also can adopt many group coils to adopt a controller.Wherein the element of temperature element being taked to protect when temperature element is installed also forms the positioning action to solenoid.
The material of electro-magnetic screen layer 5 is the complete electro-magnetic screen layer of one or more compositions of electric conducting materials such as metallic plate, metal spraying material, conductive film layer, electrically-conducting paint, conduction charcoal slurry, conductive fabric, conductive paper, conductive plastics.
But electromagnetic shielding cancellation element integral type or split type installing and using, the mode that adopts the zero line of direct earth connection or single-phase three-jaw attaching plug to carry out ground connection connects, and eliminates the electromagnetic radiation in the screening arrangement.
The operating frequency of solenoid 4 is at 10KHZ～99KHZ, though the electric conversion rate of electromagnetic induction heating and be directly proportional by the electric current I of solenoid and the frequency f of power supply, but the high frequency electromagnetic radiation that surpasses 100KHZ according to scientific research should not use in this type of field, and electro-magnetic screen layer and electromagnetism are eliminated to be provided with and can be eliminated electromagnetic radiation to equipment and the harm of the person on every side.
In sum, the invention provides the electromagnetic heater of a safety, not only heater coil arrange more reasonable, and the electro-magnetic screen layer of complete closure and the energy low-cost high-efficiency ground elimination electromagnetic radiation of electromagnetic radiation elimination loop, guarantee equipment and personal safety, but this equipment Secure Application is in industrial production, substitute present food, the traditional resistor mode of heating of industry such as chemical industry and plastic shaping, raise the efficiency, save the energy, be applicable to the pipeline of the containing oxygen iron material that needs heating, in the non-oxygen iron substance pipeline of screw rod or the plastic shaping that existing screw rod has barrel are again arranged, blowing, field of plastics processing such as granulation.
What need understand is: the above only is a preferred implementation of the present invention; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. industrial electromagnetic induction heating device, comprise barrel (2) and solenoid (4), cylindrical at barrel (2) is provided with insulated thermal insulating layer (3), solenoid (4) is wound on the insulated thermal insulating layer (3), it is characterized in that: the outer periphery at described solenoid (4) is equipped with complete electro-magnetic screen layer (5), and described electro-magnetic screen layer (5) links to each other with the electromagnetism cancellation element.
2. industrial electromagnetic induction heating device according to claim 1 is characterized in that: the outside of described electro-magnetic screen layer (5) is covered with metal cap body (6), and described metal cover body (6) links to each other with the electromagnetism cancellation element.
3. industrial electromagnetic induction heating device according to claim 1 and 2 is characterized in that: described electromagnetism cancellation element is a connecting line that links to each other with zero-power line or equipment ground wire.
4. industrial electromagnetic induction heating device according to claim 1 is characterized in that: described electro-magnetic screen layer (5) is made up of in metallic plate, metal spraying material, conductive film layer, electrically-conducting paint layer, conduction charcoal slurry layer, conductive fabric, conductive paper, the conductive plastics one or more.
5. industrial electromagnetic induction heating device according to claim 1 is characterized in that: the material of described insulated thermal insulating layer (3) is a flexible insulating material.
6. industrial electromagnetic induction heating device according to claim 1 is characterized in that: the operating frequency of described solenoid (4) is 10KHZ～99KHZ.
7. industrial electromagnetic induction heating device according to claim 1, it is characterized in that: described solenoid (4) is arranged on the insulated thermal insulating layer (3) with segmented individual layer or segmented multilayer, in the periphery of every section solenoid complete electro-magnetic screen layer is set respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910263623A CN101742748A (en) | 2009-12-22 | 2009-12-22 | Industrial electromagnetic induction heating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910263623A CN101742748A (en) | 2009-12-22 | 2009-12-22 | Industrial electromagnetic induction heating device |
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| CN101742748A true CN101742748A (en) | 2010-06-16 |
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| CN200910263623A Pending CN101742748A (en) | 2009-12-22 | 2009-12-22 | Industrial electromagnetic induction heating device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133795A (en) * | 2011-01-26 | 2011-07-27 | 新疆天业节水灌溉股份有限公司 | Air-cooled electromagnetic heating device for plastic extrusion equipment |
| CN102275277A (en) * | 2011-05-28 | 2011-12-14 | 孙健 | Integrated heating and energy saving charging barrel |
| CN102791050A (en) * | 2012-08-01 | 2012-11-21 | 福州市台江区振斌高效电磁聚能科技研究所 | Heater of plastic extruding machine |
| CN103128953A (en) * | 2013-01-28 | 2013-06-05 | 钭礼俊 | Energy-saving efficient plastic extruding machine |
| CN104053262A (en) * | 2014-05-23 | 2014-09-17 | 李金发 | Electromagnetic heating device and heating system |
| TWI507284B (en) * | 2011-07-06 | 2015-11-11 | Sheng Jye Huang | Induction heating device for evenly heating a barrel surface |
| CN105376886A (en) * | 2015-10-28 | 2016-03-02 | 上海钛舜工业科技有限公司 | Electromagnetic heating structure and heating equipment |
| CN105799083A (en) * | 2016-04-28 | 2016-07-27 | 安徽省华晨塑业科技有限公司 | Intelligent energy-saving plasticizing special device for waste ABS modification and regeneration |
| CN110074457A (en) * | 2019-04-30 | 2019-08-02 | 安徽中烟工业有限责任公司 | A kind of magnetic grain soaking smoking set being able to achieve Segmented heating |
| CN110267382A (en) * | 2019-06-26 | 2019-09-20 | 深圳市鑫汇科股份有限公司 | Inhale wave apparatus and electromagnetic heating apparatus |
| CN110712318A (en) * | 2019-11-14 | 2020-01-21 | 杭州琼网计算机网络有限公司 | Efficient plastic melting device for manufacturing luggage by applying magnetic field and magnetic wave for electromagnetic interference prevention |
-
2009
- 2009-12-22 CN CN200910263623A patent/CN101742748A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133795A (en) * | 2011-01-26 | 2011-07-27 | 新疆天业节水灌溉股份有限公司 | Air-cooled electromagnetic heating device for plastic extrusion equipment |
| CN102275277A (en) * | 2011-05-28 | 2011-12-14 | 孙健 | Integrated heating and energy saving charging barrel |
| TWI507284B (en) * | 2011-07-06 | 2015-11-11 | Sheng Jye Huang | Induction heating device for evenly heating a barrel surface |
| CN102791050A (en) * | 2012-08-01 | 2012-11-21 | 福州市台江区振斌高效电磁聚能科技研究所 | Heater of plastic extruding machine |
| CN103128953A (en) * | 2013-01-28 | 2013-06-05 | 钭礼俊 | Energy-saving efficient plastic extruding machine |
| CN104053262A (en) * | 2014-05-23 | 2014-09-17 | 李金发 | Electromagnetic heating device and heating system |
| CN105376886A (en) * | 2015-10-28 | 2016-03-02 | 上海钛舜工业科技有限公司 | Electromagnetic heating structure and heating equipment |
| CN105799083A (en) * | 2016-04-28 | 2016-07-27 | 安徽省华晨塑业科技有限公司 | Intelligent energy-saving plasticizing special device for waste ABS modification and regeneration |
| CN110074457A (en) * | 2019-04-30 | 2019-08-02 | 安徽中烟工业有限责任公司 | A kind of magnetic grain soaking smoking set being able to achieve Segmented heating |
| CN110267382A (en) * | 2019-06-26 | 2019-09-20 | 深圳市鑫汇科股份有限公司 | Inhale wave apparatus and electromagnetic heating apparatus |
| CN110712318A (en) * | 2019-11-14 | 2020-01-21 | 杭州琼网计算机网络有限公司 | Efficient plastic melting device for manufacturing luggage by applying magnetic field and magnetic wave for electromagnetic interference prevention |
| CN110712318B (en) * | 2019-11-14 | 2021-09-10 | 永州市嘉益皮具有限公司 | Efficient plastic melting device for manufacturing luggage by applying magnetic field and magnetic wave for electromagnetic interference prevention |
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Application publication date: 20100616 |