CN203407033U - Electromagnetic heating device and electromagnetic heat supply apparatus - Google Patents

Electromagnetic heating device and electromagnetic heat supply apparatus Download PDF

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Publication number
CN203407033U
CN203407033U CN201320390703.0U CN201320390703U CN203407033U CN 203407033 U CN203407033 U CN 203407033U CN 201320390703 U CN201320390703 U CN 201320390703U CN 203407033 U CN203407033 U CN 203407033U
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iron plate
iron
heat conduction
conduction fin
fluid
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CN201320390703.0U
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李民华
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Abstract

An electromagnetic heating device, comprises positive and negative electrodes, an electromagnetic controller, an electromagnetic coil, a heat insulation pad layer, an iron square tube and heat conducting fins, wherein the heat conducting fins are embedded in the iron square tube; the iron square tube is coated with the heat insulation pad layer, the electromagnetic coil is wound on the outer part of the heat insulation pad layer; the heat conducting fin is provided with several lines of bending sheets; the iron square tube is formed by four rectangular iron plates, the first iron plate is opposite to the second iron plate, the third iron plate is opposite to the fourth iron plate, several lines of clamping holes are formed on the at least two opposite iron plates; the embedding edges of the heat conducting fins and the iron plates are convex-concave edges, the convex-concave edge is formed by a convex part and a concave part, and the convex parts are embedded into the clamping holes. The bending sheets are arranged on the heat conducting fins to increase the collision times of the fluid with the heat conducting fins, the heat exchange time is prolonged, and the temperature of the output fluid is increased.

Description

A kind of electromagnetic heater and electromagnetism heating equipment
Technical field
The utility model relates to Electromagnetic Heating field, relates in particular to a kind of electromagnetic heater and electromagnetism heating equipment.
Background technology
Electromagnetic induction technology is to grow up on the basis of Faraday's law of induction, is a kind of application form of Faraday's law of induction.The principle of Electromagnetic Heating be by electronic circuit board part produce alternating magnetic field, when with contain container made of iron place above time, vessel surface cuts the alternation magnetic line of force and at container bottom metal, partly produces the electric current (being eddy current) of alternation, eddy current makes the iron atom high speed random motion of container bottom, atom collides with each other, rubs and produces heat energy, thereby plays the effect of heating objects.Because be iron ware self-heating, so heat conversion is high especially, can reach 95%.
At present, electromagnetic oven used in everyday, electromagnetic stove is all the electromagnetic heating technique adopting.In addition, industrial, electromagnetic heating technique is widely used in the production field of the industries such as plastics, rubber, chemical industry, medicine, as the heating of plastic wire-drawing, blown film, granulation, injection moulding etc.; Cable is produced extruder, the heating such as plastic extruding machine; The heating such as thermoplastic plastic's tubing, section bar production; Pipeline tracing, thermostatic control heating etc.But existing electromagnetic heater is many, directly contact with visible object, heating effect is good; Insufficient with fluid contact heat exchange, heating effect is poor.
Utility model content
In view of this, be necessary, for the poor problem of electromagnetic heater convection cell heating effect, to provide a kind of electromagnetic heater.
To achieve these goals, the utility model adopts following technical scheme.
, comprise positive and negative electrode, electromagnetic controller, solenoid, partiting thermal insulation bed course, iron square tube and heat conduction fin; Described heat conduction fin is embedded in described iron square tube, and described partiting thermal insulation bed course is wrapped in outside described iron square tube, and described solenoid is wrapped in outside described partiting thermal insulation bed course; Described heat conduction fin is provided with number row bent sheet; Described iron square tube is comprised of 4 rectangle iron plates, and the first iron plate is relative with the second iron plate, and the 3rd iron plate is relative with the 4th iron plate, has at least on two relative iron plates and has and arrange hole clippings more; The limit that described heat conduction fin and described iron plate are chimeric is rabbet, and described rabbet is comprised of protuberance and depressed part, and described protuberance is embedded in described hole clipping.
Preferably, described iron square tube is comprised of 4 rectangle iron plates, and the first iron plate and the second iron plate are wide rectangle iron plate, and the 3rd iron plate and the 4th iron plate are narrow rectangle iron plate, has many row's hole clippings on every iron plate; With the first iron plate and the chimeric heat conduction fin of the second iron plate be large heat conduction fin, with the 3rd iron plate or the chimeric heat conduction fin of the 4th iron plate be little heat conduction fin;
Described large heat conduction fin is rectangle, and the limit that itself and the first iron plate and the second iron plate are chimeric is rabbet, and described protuberance is embedded in described hole clipping, and described large heat conduction fin is provided with many row's bent sheet;
Described little heat conduction fin comprises two sidewalls and a connecting portion, and two sidewalls are connected by connecting portion; The limit that described sidewall and described the 3rd iron plate or the 4th iron plate are chimeric is rabbet, and its protuberance is embedded in the hole clipping of the 3rd iron plate or the 4th iron plate, is at least provided with row's bent sheet on each sidewall.
More preferably, described large heat conduction fin is comprised of 2 half fins, and the limit that each half fin and the first iron plate or the second iron plate are chimeric is rabbet, and the limit relative with rabbet is straight flange, is at least provided with row's bent sheet on each half fin.
Further preferably, the overbending direction of the bent sheet on same large heat conduction fin is identical; Bent sheet outward on same little heat conduction fin, symmetrical along the center line mirror image of connecting portion.
The preparation method of described electromagnetic heater, comprises the following steps: 1) iron plate is cut into wide rectangle and narrow rectangle, at the appropriate location basket of wide rectangle or wide rectangle and narrow rectangle, vacates hole clipping; 2) copper sheet is made to heat conduction fin, on copper sheet, stamped out bent sheet, and rabbet is made in length limit; 3) after the protuberance of heat conduction fin sequentially being injected in the hole clipping of iron plate, joint filling full weld; 4) two of chimeric heat conduction fin wide rectangle iron plates and narrow rectangle iron plate are welded into iron square tube, the chimeric or not chimeric heat conduction fin of described narrow rectangle iron plate; 5) at iron square tube outer wrapping partiting thermal insulation bed course; 6) at partiting thermal insulation bed course, be wound around solenoid outward and make described electromagnetic heater.
A kind of electromagnetism heating equipment, by fluid, generated or storage facilities, fluid enter pipe, fluid goes out pipe and above-mentioned electromagnetic heater forms, the two ends of the iron square tube of described electromagnetic heater enter pipe and fluid with fluid respectively and go out pipe and be connected, and the other end that fluid enters pipe is connected with fluid generation or storage facilities.
Preferably, in the iron square tube of described electromagnetic heater, be provided with iron dividing plate, iron square tube is divided into a plurality of Electromagnetic Heatings unit; Described electromagnetism heating equipment also comprises return bend, and return bend is for connecting the same end revolution end of adjacent Electromagnetic Heating unit.
More preferably, the overbending direction of the bent sheet in each fluid passage is identical with fluid flow direction.
The preparation method of described electromagnetism heating equipment goes out pipe for the fluid of burn-oning at the iron square tube two ends of described electromagnetic heater enters pipe with fluid, or the fluid of burn-oning at the two ends of Electromagnetic Heating unit enters pipe, fluid goes out pipe or return bend, makes electromagnetism heating equipment.
The heat conduction fin of the utility model electromagnetic heater and electromagnetism heating equipment is connected with iron plate, and heat conduction fin and iron plate have uniform temp.And heat conduction fin is provided with bent sheet, can increase the collision frequency of fluid and heat conduction fin, increase the time of heat exchange, improve the temperature of output fluid.The utility model electromagnetism heating equipment can contain a plurality of gas passages, can repeatedly turn round heating by convection cell.
Accompanying drawing explanation
Fig. 1 is the structural representation of certain embodiment of the utility model electromagnetic heater;
Fig. 2 is the structural representation of certain embodiment of the iron square tube of chimeric heat conduction fin;
Fig. 3 is the structural representation of certain embodiment of large heat conduction fin 4A;
Fig. 4 is the structural representation of another embodiment of large heat conduction fin 4A;
Fig. 5 is the end view of half fin 4a;
Fig. 6 is the stereogram of half fin 4a;
Fig. 7 is the structural representation of certain embodiment of the utility model electromagnetism heating equipment;
Fig. 8 is the schematic diagram of fluid flow direction in the utility model electromagnetism heating equipment.
In accompanying drawing, each Reference numeral represents respectively:
1 solenoid, 2 partiting thermal insulation bed courses, 3 iron square tubes, 4 heat conduction fins,
31 first iron plates, 32 second iron plates, 33 the 3rd iron plates, 34 the 4th iron plates,
35 hole clippings, 36 iron dividing plates, 37 Electromagnetic Heating unit, 38 gas passages,
41 rabbets, 42 bent sheet, 43 bending openings, 411 protuberances,
412 depressed parts, the large heat conduction fin of 4A, 4a the first half fins, 4b the second half fins,
The little heat conduction fin of 4B, 5 fluids enter pipe, and 6 fluids go out pipe, 7 return bends.
Embodiment
In order better to understand the utility model, below in conjunction with the drawings and specific embodiments, be described further.
The principle of electromagnetic heater is to utilize electromagnetic controller that AC rectification is become to direct current, direct current being converted to frequency is high-frequency high-voltage more than 20KHz again, the high-frequency high-voltage current changing the at a high speed solenoid of flowing through can produce the core varying magnetic field changing at a high speed, when the magnetic line of force is by iron plate inside magnetic field, cause iron atom high-speed motion, the mutual friction of iron atom phase makes iron plate heating at a high speed voluntarily itself, utilizes the iron plate of heating to heat object.General electromagnetic heater only directly heats solid, can not be for the heating of convection cell; Be used in fluid heating, because fluid Negotiation speed is fast, contact area and time of contact are limited, after heating, also cannot reach higher temperature.
In order to overcome the problems referred to above, the utility model adopts heat conduction fin to be connected with iron plate; Therefore, heat conduction fin and iron plate have uniform temp.And heat conduction fin is provided with bent sheet, can increase the collision frequency of fluid and heat conduction fin, increase the time of heat exchange, improve the temperature of output fluid.
As shown in Figure 1, electromagnetic heater described in the utility model, comprises positive and negative electrode, electromagnetic controller, solenoid 1, partiting thermal insulation bed course 2, iron square tube 3, heat conduction fin 4; Described heat conduction fin 4 is embedded in described iron square tube 3, and described partiting thermal insulation bed course 2 is wrapped in outside described iron square tube 3, and described solenoid 1 is wrapped in outside described partiting thermal insulation bed course 2.
As shown in Figure 2, described iron square tube 3 is comprised of 4 rectangle iron plates, and the first iron plate 31 is relative and identical with the second iron plate 32, is wide rectangle iron plate; The 3rd iron plate 33 is relative and identical with the 4th iron plate 34, is narrow rectangle iron plate.Described the first iron plate 31 has many row's hole clippings 35, and every row has a plurality of hole clippings 35.In like manner, on the second iron plate 32 identical with the first iron plate 31, also have many row's hole clippings 35.
As shown in Figure 3, described heat conduction fin 4 is the elongated copper sheet matching with described iron square tube 3.The limit that described heat conduction fin 4 and iron plate are chimeric is rabbet 41, and described rabbet 41 is comprised of protuberance 411 and depressed part 412.Described heat conduction fin 4 is provided with many row's bent sheet 42.
As shown in Figure 3, described heat conduction fin 4 is the large heat conduction fin 4A in Fig. 1, and its two long limits are rabbet 41.Article one, in the hole clipping 35 that the protuberance on rabbet 41 411 embeds on the first iron plate, in the hole clipping 35 that the protuberance 411 on another rabbet 41 embeds on the second iron plate, described depressed part 412 contacts with the iron plate inwall of 35 of adjacent hole clippings.Each large heat conduction fin 4A has 2 row's bent sheet 42 at least, and described bent sheet 42 is to the same side bending of large heat conduction fin 4A.The side that bent sheet 42 bends towards is the front of large heat conduction fin 4A, and another side is the back side of large heat conduction fin 4A.The identical faces of adjacent 2 large heat conduction fin 4A is oppositely arranged, and the back side is relative with the back side, or front and vis-a-vis.
Because heat conduction fin 4 is copper sheet, there is certain hardness, to assembling, caused certain difficulty.For ease of assembly, as shown in Figure 4, described large heat conduction fin 4A can be comprised of 2 half fins.It is rabbet 41 that each half fin only has a long limit, and another long limit is straight flange.In the hole clipping 35 that protuberance on the rabbet 41 of the first half fin 4a 411 is embedded on the first iron plates, protuberance on the rabbet 41 of the second half fin 4b 411 is embedded in the hole clipping 35 of the upper relevant positions of the second iron plates, after iron square tube has been assembled, the straight flange of above-mentioned two and half fins just in time contacts.Preferably, on each half fin, at least have row's hole clipping 35.
In order to describe in more detail the structure of bent sheet, existing take half fin and describe as example.As shown in Figure 5, described bent sheet 42 is that three limits that are stamped to form on heat conduction fin 4 are separated with heat conduction fin 4, with heat conduction fin 4 be connected on one side, to the little rectangular sheet of certain orientation bending.As shown in Figure 6, the opening forming because of preparation bent sheet on heat conduction fin is bending opening 43.The side that bent sheet 42 bends towards is the front of half fin 4a, and another side is the back side of half fin 4a.
While heat conduction fin 4 being housed on only having the first iron plate 31 and the second iron plate 32, only have the heat energy of the first iron plate 31 and the second iron plate 32 effectively to derive, the 3rd iron plate 33 of iron square tube and the heat energy on the 4th iron plate 34 can not effectively be derived, and have caused the waste of heat energy.
When 4 iron plates of iron square tube 3 are all equipped with heat conduction fin, the efficiency of heat exchange is higher.For this reason, preferably on the 3rd iron plate 33 and the 4th iron plate 34, also have many row's hole clippings 35, and be connected with heat conduction fin 4 by described hole clipping 35, as shown in Figure 2.With the 3rd iron plate 33, heat conduction fin 4 that the 4th iron plate 34 is chimeric be little heat conduction fin.Little heat conduction fin 4B comprises two sidewalls and a connecting portion, and sidewall is similar to half fin, and two sidewalls are connected by connecting portion, and integral body is " U " type; The limit that described sidewall and described the 3rd iron plate 33 or the 4th iron plate 34 are chimeric is rabbet, and its protuberance is embedded in the hole clipping 35 of the 3rd iron plate 33 or the 4th iron plate 34, is at least provided with row's bent sheet 42 on each sidewall.Bent sheet 42 outwards on same little heat conduction fin 4B, symmetrical along the center line mirror image of connecting portion.
The utility model electromagnetic heater is prepared by the following method, and 1) iron plate is cut into wide rectangle and narrow rectangle, at the appropriate location basket of wide rectangle or wide rectangle and narrow rectangle, vacate hole clipping 35; 2) copper sheet is made to heat conduction fin 4, on copper sheet, stamped out bent sheet 42, and rabbet 41 is made in length limit; 3) after the protuberance of heat conduction fin 4 411 sequentially being injected in the hole clipping 35 of iron plate, joint filling full weld, can not leak out; 4) two of chimeric heat conduction fin 4 wide rectangle iron plates and narrow rectangle iron plate are welded into iron square tube 3, described narrow rectangle iron plate can chimeric heat conduction fin 4; 5) at iron square tube 3 outer wrapping partiting thermal insulation bed courses 2; 6) at the outer winding solenoid 1 of partiting thermal insulation bed course 2, make described electromagnetic heater.
Because the utility model electromagnetic heater has adopted the mode of high-frequency electromagnetic coil induction heating, compare with using coal or combustion gas, more save the energy; And the heat producing, owing to being subject to the isolation of partiting thermal insulation bed course, cannot be lost to surrounding space, heat is all derived fast to iron square tube outlet, improved heat utilization rate.
Another object of the present utility model is to provide a kind of electromagnetism heating equipment.As shown in Figure 7, described electromagnetism heating equipment is generated by fluid or storage facilities, fluid enter pipe 5, fluid goes out pipe 6 and above-mentioned electromagnetic heater forms, the two ends of the iron square tube 3 of described electromagnetic heater enter pipe 5 with fluid respectively and go out pipe 6 with fluid and be connected, and the other end that fluid enters pipe 5 is connected with fluid generation or storage facilities.Now, iron square tube 3 integral body are a fluid passage 38.Described fluid generates or storage facilities is used for providing fluid, and conventional fluid generates or storage facilities has blower fan, storage tank etc., and the fluids such as gas and liquid are provided respectively.
Preferably, as shown in Figure 7, be provided with iron dividing plate 36 in the iron square tube 3 of described electromagnetic heater, iron square tube 3 is divided into a plurality of Electromagnetic Heatings unit 37, each Electromagnetic Heating unit is a fluid passage 38; Entering pipe 5 ends, Electromagnetic Heating unit that are connected with fluid is fluid intake end, and going out pipe 6 ends, Electromagnetic Heating unit that are connected with fluid is fluid outlet, and other ends of Electromagnetic Heating unit 37 are revolution end; Described electromagnetism heating equipment also comprises return bend 7, and return bend 7 is for connecting the same end revolution end of adjacent Electromagnetic Heating unit 37.
As shown in Figure 8, in fluid passage 38, adjacent 2 large heat conduction fin 4A identical faces are relative, even the back side is relative with the back side, or front and vis-a-vis.The overbending direction of the bent sheet in each fluid passage 38 is identical with fluid flow direction.Fluid enters pipe 5 from fluid and enters fluid passage 38, and fluid passes through from the interval of adjacent heat conduction fin 4.Because bent sheet 42 is to the positive bending of large heat conduction fin 4A, bent sheet 42 bottoms are bending opening 43.In Fig. 8, arrow represents the flow direction of fluid.Fluid in mobile forward process will inevitably or directly, or from bending opening 43 passes, encounter bent sheet 42, heat conduction fin 4, iron dividing plate 36 or iron square tube 3 and change flow direction, after multiple impacts heat exchange, fluid just passes through fluid passage.The process of fluid by little heat conduction fin similarly.Collide all convection cells heats at every turn.Because thering are a plurality of heat conduction fins in iron square tube, on each heat conduction fin, there are many row's bent sheet, every row's bent sheet has a plurality of bent sheet, and therefore, after heating for multiple times, final fluid temperature (F.T.) can reach more than 250 ℃.Fluid is every many by a fluid passage, doubles with the number of times of bent sheet collision, can improve final fluid temperature (F.T.), shortens heating time.
The preparation method of described electromagnetism heating equipment goes out pipe for the fluid of burn-oning at the iron square tube two ends of described electromagnetic heater enters pipe with fluid, or the fluid of burn-oning at the two ends of Electromagnetic Heating unit enters pipe, fluid goes out pipe and return bend, makes electromagnetism heating equipment.
In order to reach better heating effect, the utility model electromagnetism heating equipment, can increase or reduce according to need of production the number of Electromagnetic Heating unit; This utility model easy accessibility, also can directly install additional existing electromagnetic heating apparatus.The utility model electromagnetism heating equipment, heats by the repeatedly revolution of convection cell, can effectively improve the final temperature of fluid; And, the utility model electromagnetism heating equipment easy small and exquisite, save and to take up room.Fluid after the heating of the utility model electromagnetism heating equipment, can be for the heating of barn, baking box, the energy-conservation scientific and technological heating efficiencies such as barn, the heating of oven hot air hot gas plant equipment are brought up to more than 95%, can saves energy reach 40%-60%, fully demonstrate power savings advantages, reduce processing industry electric energy and fuel cost, improved production efficiency, also improved the operational environment in workshop.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.

Claims (7)

1. an electromagnetic heater, is characterized in that: comprise positive and negative electrode, electromagnetic controller, solenoid, partiting thermal insulation bed course, iron square tube, heat conduction fin; Described heat conduction fin is embedded in described iron square tube, and described partiting thermal insulation bed course is wrapped in outside described iron square tube, and described solenoid is wrapped in outside described partiting thermal insulation bed course; Described heat conduction fin is provided with number row bent sheet;
Described iron square tube is comprised of 4 rectangle iron plates, and the first iron plate is relative with the second iron plate, and the 3rd iron plate is relative with the 4th iron plate, has at least on two relative iron plates and has and arrange hole clippings more;
The limit that described heat conduction fin and described iron plate are chimeric is rabbet, and described rabbet is comprised of protuberance and depressed part, and described protuberance is embedded in described hole clipping.
2. electromagnetic heater according to claim 1, it is characterized in that: described iron square tube is comprised of 4 rectangle iron plates, the first iron plate and the second iron plate are wide rectangle iron plate, and the 3rd iron plate and the 4th iron plate are narrow rectangle iron plate, have many row's hole clippings on every iron plate;
With the first iron plate and the chimeric heat conduction fin of the second iron plate be large heat conduction fin, with the 3rd iron plate and the chimeric heat conduction fin of the 4th iron plate be little heat conduction fin;
Described large heat conduction fin is rectangle, and the limit that itself and the first iron plate and the second iron plate are chimeric is rabbet, and described protuberance is embedded in described hole clipping, and described large heat conduction fin is provided with many row's bent sheet;
Described little heat conduction fin comprises two sidewalls and a connecting portion, and two sidewalls are connected by connecting portion; The limit that described sidewall and described the 3rd iron plate or the 4th iron plate are chimeric is rabbet, and its protuberance is embedded in the hole clipping of the 3rd iron plate or the 4th iron plate, is at least provided with row's bent sheet on each sidewall.
3. electromagnetic heater according to claim 2, it is characterized in that: described large heat conduction fin is comprised of 2 half fins, the limit that each half fin and the first iron plate or the second iron plate are chimeric is rabbet, and the limit relative with rabbet is straight flange, is at least provided with row's bent sheet on each half fin.
4. electromagnetic heater according to claim 1 and 2, is characterized in that: the overbending direction of the bent sheet on same large heat conduction fin is identical; Bent sheet outward on same little heat conduction fin, symmetrical along the center line mirror image of connecting portion.
5. an electromagnetism heating equipment, it is characterized in that: by fluid, generated or storage facilities, fluid enter the electromagnetic heater that pipe, fluid go out described in pipe and claim 1-4 any one and form, the two ends of the iron square tube of described electromagnetic heater enter pipe and fluid with fluid respectively and go out pipe and be connected, and the other end that fluid enters pipe is connected with fluid generation or storage facilities.
6. electromagnetism heating equipment according to claim 5, is characterized in that: in the iron square tube of described electromagnetic heater, be provided with iron dividing plate, iron square tube is divided into a plurality of Electromagnetic Heatings unit; Described electromagnetism heating equipment also comprises return bend, and return bend is for connecting the same end revolution end of adjacent Electromagnetic Heating unit.
7. electromagnetism heating equipment according to claim 6, is characterized in that: the overbending direction of the bent sheet in each gas passage is identical with gas flow direction.
CN201320390703.0U 2013-07-02 2013-07-02 Electromagnetic heating device and electromagnetic heat supply apparatus Expired - Fee Related CN203407033U (en)

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Application Number Priority Date Filing Date Title
CN201320390703.0U CN203407033U (en) 2013-07-02 2013-07-02 Electromagnetic heating device and electromagnetic heat supply apparatus

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Application Number Priority Date Filing Date Title
CN201320390703.0U CN203407033U (en) 2013-07-02 2013-07-02 Electromagnetic heating device and electromagnetic heat supply apparatus

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103354678A (en) * 2013-07-02 2013-10-16 吴会霞 Electromagnetic heating device and electromagnetic heat-supplying device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103354678A (en) * 2013-07-02 2013-10-16 吴会霞 Electromagnetic heating device and electromagnetic heat-supplying device
WO2015000377A1 (en) * 2013-07-02 2015-01-08 吴会霞 Electromagnetic heating device and electromagnetic heat supply apparatus

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140122

Termination date: 20170702

CF01 Termination of patent right due to non-payment of annual fee