CN112911747B - Linear magnetic circuit device and electromagnetic induction heater - Google Patents
Linear magnetic circuit device and electromagnetic induction heater Download PDFInfo
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- CN112911747B CN112911747B CN202110046251.3A CN202110046251A CN112911747B CN 112911747 B CN112911747 B CN 112911747B CN 202110046251 A CN202110046251 A CN 202110046251A CN 112911747 B CN112911747 B CN 112911747B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/365—Coil arrangements using supplementary conductive or ferromagnetic pieces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/42—Cooling of coils
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- General Induction Heating (AREA)
Abstract
The invention relates to a linear magnetic circuit device and an electromagnetic induction heater, belongs to the technical field of electromagnetic induction heating, and solves the technical problem that the heating temperature distribution of the electromagnetic induction heater in the prior art is not uniform. The linear magnetic circuit device comprises a magnetizer and a radiating sheet, wherein a plurality of magnetizers and radiating sheets are laminated together to form a magnetic circuit; the coil is arranged on the magnetic path; the support bearing assembly is supported at the periphery of the magnetic circuit to support the magnetic circuit, and the magnetic circuit of the linear magnetic circuit device with the structure can not break a magnetic field in the magnetic conduction process, so that the formed magnetic field is more uniformly distributed, and the heating temperature distribution is more uniform when the linear magnetic circuit device is used for heating; the electromagnetic induction heater comprises the linear magnetic circuit device, so that the heating effect of the electromagnetic induction heater is better.
Description
Technical Field
The invention belongs to the technical field of electromagnetic induction heating, and particularly relates to a linear magnetic circuit device and an electromagnetic induction heater.
Background
The electromagnetic induction heating equipment is widely applied due to high heating speed and high electric energy conversion efficiency, and the working principle of the electromagnetic induction heating equipment is that an alternating induction magnetic field generated by an electromagnetic induction heater acts on a conductive heated material to generate an induction current in the heated material, and the heat effect of the current heats the material.
At present, the slab electromagnetic induction heating technology is applied to the technical field of metallurgical steel rolling, generally comprises two electromagnetic induction heater devices which generate magnetic fields and are respectively arranged above and below a heated slab, and a coil in the electromagnetic induction heater is electrified to generate an induction magnetic field, and the induction magnetic field is conducted through a magnetizer and then acts on the slab to heat the slab, but the technical problem of uneven heating temperature distribution exists.
Disclosure of Invention
The invention provides a linear magnetic circuit device and an electromagnetic induction heater, which are used for solving the technical problem of uneven heating temperature distribution of the electromagnetic induction heater in the prior art.
The invention is realized by the following technical scheme: a linear magnetic circuit device comprising:
the magnetic circuit comprises a magnetizer and a radiating sheet, wherein a plurality of magnetizers and radiating sheets are laminated together to form a magnetic circuit;
a coil mounted in the magnetic circuit;
a support assembly supported at the periphery of the magnetic circuit to support the magnetic circuit.
Further, in order to better implement the present invention, the bearing assembly includes end support structures, a middle support structure, and a frame, the end support structures and the middle support structure respectively bear end portions and a middle portion of the magnetic circuit, and the end support structures and the middle support structure are both connected to the frame.
Further, in order to better implement the present invention, the heat dissipation sheet includes a plurality of middle sheet bodies located in the middle of the magnetic circuit;
the middle supporting structure comprises a first block body, one end of the first block body is connected to at least two middle sheet bodies in an insulating mode, and the other end of the first block body is connected to the frame in an insulating mode.
Further, in order to better implement the present invention, the heat dissipation sheet includes a plurality of middle sheets located in the middle of the magnetic circuit;
middle part bearing structure includes first plate body, the middle part lamellar body includes a plurality of first thin slices and second thin slice, at least two be equipped with on the first thin slice the first plate body, the free end of first plate body is equipped with first connecting plate, first connecting plate insulating connection is in on the frame.
Further, in order to better implement the present invention, the middle support structure further includes a first pad plate, and the first pad plate is installed between the two first plate bodies.
Further, in order to better implement the present invention, the heat dissipating sheet includes an end piece at an end of the magnetic circuit;
the end supporting structure comprises a second block body, one end of the second block body is connected to one end sheet body and a middle sheet body adjacent to the end sheet body in an insulating mode, and the other end of the second block body is connected to the frame in an insulating mode;
the end supporting structure further comprises a first screw and a second nut, the first screw penetrates through the magnetic circuit, two ends of the first screw extend out of the magnetic circuit, the second nut is connected to two ends of the first screw in a threaded mode, and the magnetic circuit is pressed by the two second nuts.
Further, in order to better implement the present invention, the end support structure comprises end plates, two ends of the magnetic circuit are respectively provided with one end plate, and the end plates are connected to the frame in an insulating manner;
the end supporting structure further comprises second screw rods and sixth nuts, the second screw rods penetrate through the two end plates and the magnetic circuit, the two ends of each second screw rod extend out of the end plates, the sixth nuts are connected to the two ends of each second screw rod in a threaded mode, and the end plates are tightly pressed on the magnetic circuit through the two sixth nuts.
Further, in order to better implement the present invention, the heat dissipating sheet includes an end piece at an end of the magnetic circuit;
the end supporting structure comprises a second plate body, the end part sheet body and a middle sheet body adjacent to the end part sheet body are provided with the second plate body, the free end of the second plate body is provided with a second connecting plate, and the second connecting plate is connected to the frame in an insulating mode.
Further, in order to better implement the present invention, the end support structure further comprises a second pad plate, and the second pad plate is installed between the two second plate bodies.
The invention also protects an electromagnetic induction heater which comprises the linear magnetic circuit device.
Compared with the prior art, the invention has the following beneficial effects:
(1) The linear magnetic circuit device comprises a magnetic circuit, a coil and a support assembly, wherein the magnetic circuit is formed by laminating a plurality of magnetizers and radiating sheets together, the coil is installed in the magnetic circuit, a magnetic field generated by electrifying the coil is outwards diffused under the action of the magnetic circuit, the magnetic circuit is segmented by non-magnetizers such as an insulating support plate and the like in the magnetic circuit, so that the magnetic circuit is a complete magnetizer, although the radiating sheets can also block the magnetic field of the magnetic circuit, the effect of blocking the magnetic field is not obvious because the radiating sheets are very thin, the whole magnetic circuit still can form a complete magnetizer, and the support assembly is supported at the periphery of the magnetic circuit to support the magnetic circuit so as to ensure the installation and fixation of the magnetic circuit;
(2) The electromagnetic induction heater provided by the invention adopts the linear magnetic circuit device, so that the heating effect of the electromagnetic induction heater is better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a linear magnetic circuit device formed by a middle support structure in embodiment 1 and an end support structure in embodiment 5 of the present application supporting a magnetic circuit;
fig. 2 is a schematic structural view of a linear magnetic circuit device formed by a middle support structure in embodiment 2 and an end support structure in embodiment 6 of the present application to support a magnetic circuit;
fig. 3 is a schematic structural view of a linear magnetic circuit device formed by supporting a magnetic circuit by a middle support structure in embodiment 3 and an end support structure in embodiment 6 of the present application;
fig. 4 is a schematic structural view of a linear magnetic circuit device formed by a middle support structure in embodiment 4 and an end support structure in embodiment 8 of the present application supporting a magnetic circuit;
FIG. 5 isbase:Sub>A sectional view A-A of FIG. 4;
fig. 6 is a schematic structural view of a linear magnetic circuit device in embodiment 9 of the present application;
fig. 7 is a schematic structural view of a linear magnetic circuit device according to embodiment 10 of the present application;
fig. 8 is a schematic structural diagram of the magnetic circuit of the card holder and the holder in the present application.
In the figure:
1-a magnetizer;
2-a heat dissipation sheet;
3-a coil;
a 4-end support structure; 401-a second block; 402-a fifth screw; 403-sixth screw; 404-a fifth nut; 405-a first screw; 406-a second nut; 411-end plate; 412-a seventh screw; 413-a second screw; 414-sixth nut; 415-tenth screw; 416-a ninth nut; 421-a second plate body; 422-eighth screw; 423-a second connecting plate; 424-seventh nut; 431-a second shim plate; 432-ninth screw; 433-an eighth nut;
5-a central support structure; 501-a first block; 502-a first screw; 503-a second screw; 504-a first nut; 511-a first plate body; 512-third screw; 513 — a first connection plate; 514-third nut; 521-a first shim plate; 522-a fourth screw; 523-fourth nut;
6-a frame;
100-kator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the present embodiment provides a linear magnetic circuit device for solving the technical problem of uneven heating temperature distribution of an electromagnetic induction heater in the prior art. Specifically, the magnetic circuit in the prior art is broken by the non-magnetic support plate, so that the magnetic field is divided into multiple sections, and the non-continuous magnetic field causes uneven heating temperature distribution.
As a best implementation manner of this embodiment, the magnetizer 1 in this embodiment is a silicon steel sheet or a sheet structure capable of conducting magnetic current, the heat dissipating sheet 2 is an aluminum sheet or a sheet structure such as a copper sheet with good heat conducting effect and insulation, and the thickness of the heat dissipating sheet 2 is 0.3mm to 0.5mm, such as 0.3mm, 0.5mm, and the like. Several magnetizers 1 and heat dissipation sheets 2 are laminated together to form a magnetic circuit, it should be noted that the magnetic circuit in this embodiment is a linear magnetic circuit, the magnetic circuit has two ends, the coil 3 is installed in the magnetic circuit, specifically, the coil 3 is laid in the magnetic circuit, when the coil 3 is electrified, a magnetic field can be generated, and the generated magnetic field is diffused outwards under the action of the magnetic circuit. Because there is no insulating support plate in the magnetic circuit, therefore the magnetic circuit is a complete magnetizer 1, although the heat-dissipating flake 2 will form and block the magnetic field of the magnetic circuit too, because the heat-dissipating flake 2 is very thin, its blocking effect is not obvious, can be ignored almost, therefore the whole magnetic circuit can still form a complete magnetizer, this magnetic circuit will not make the magnetic field break in the course of the magnetic conduction. The support bearing assembly is supported at the periphery of the magnetic circuit to support the magnetic circuit, so that the installation and fixation of the magnetic circuit are ensured, and the magnetic circuit of the linear magnetic circuit device can be prevented from being broken due to overlarge span by the support effect of the support bearing assembly. The heat dissipating sheet 2 is a member provided in the magnetic circuit to dissipate heat from the magnetic circuit.
Through above-mentioned structure, the line type magnetic circuit device that this embodiment provided can not cause the magnetic field disconnection when using, and the magnetic field distribution that consequently forms is more even, and the heating temperature distribution when being used for heating is more even to make by each position heating effect of heating body more unanimous.
It is noted that the bracketing assemblies in this embodiment include end support structures 4 and a middle support structure 5 and a frame 6, the end support structures 4 and the middle support structure 5 respectively bear end portions and a middle portion of the magnetic circuit, and the end support structures 4 and the middle support structure 5 are both attached to the frame 6. In this way, a better support of the magnetic circuit 3 is obtained, ensuring the mounting and the fixing of the magnetic circuit 3.
Example 2:
this embodiment is provided as an implementation of embodiment 1, and specifically, provides a central support structure 5.
The heat sink sheet 2 in this embodiment includes a plurality of middle sheet bodies located in the middle of the magnetic circuit, the middle support structure 5 in this embodiment includes a first block body 501, one end of the first block body 501 is connected to at least two middle sheet bodies in an insulating manner, specifically, one end of the first block body 501 is connected to two adjacent middle sheet bodies in an insulating manner, and the other end of the first block body 501 is connected to the frame 6 in an insulating manner. In the structure, the first block 501 is used for drawing and hanging the heat dissipation sheet 2 in the magnetic circuit, so that the middle part of the magnetic circuit is supported, and the first block 501 does not separate the magnetic circuit.
As a specific implementation manner of this embodiment, the middle supporting structure 5 in this embodiment further includes a first screw 502 and a second screw 503, one end of the first block 501 is connected to the at least two middle sheets through the first screw 502 and is locked by the first nut 504, that is, the first screw 502 penetrates through the two middle sheets and one end of the first block 501, and is then locked by the first nut 504; the other end of the first block 501 is connected to the frame 6 through a second screw 503, specifically, a screw hole is provided at the other end of the first block 501, and the second screw 503 is screwed into the screw hole after passing through the frame 6. The first screw 502, the second screw 503 and the first nut 504 in this embodiment are structural members made of insulating materials, and the first block 501 is also a structural member made of insulating materials, such as nylon or plastic.
Of course, the first block 501 in this embodiment can be connected to the middle plate and the frame 6 by other connecting means, such as pin joint, snap joint, etc.
In addition, the number of the middle support structures 5 in this embodiment is plural, and the plural middle support structures 5 are uniformly distributed on the magnetic circuit along the length direction of the magnetic circuit.
The end support structure 4 provided in this embodiment may be any type of structural member as long as it can support the end of the magnetic circuit.
Example 3:
this embodiment is another embodiment of embodiment 1, and specifically, provides a central support structure 5.
The heat sink 2 in this embodiment includes a plurality of middle sheet bodies located in the middle of the magnetic circuit, and the middle sheet bodies are divided into a first sheet and a second sheet, the middle support structure 5 in this embodiment includes a first plate body 511, the first plate body 511 is integrally formed or welded on at least two first sheets, the free end of the first plate body 511 is integrally formed or welded with a first connection plate 513, the first connection plate 513 is vertical to the first plate body 511, and the first connection plate 513 is connected to the frame 6 in an insulating manner. The first sheet in this embodiment is a structural member having a different shape from a conventional heat sink, and not only has a function of heat dissipation, but also has a supporting function of being connected with the frame 6 to form a pulling and hanging connection for the magnetic circuit. Since the heat dissipating sheet 2 is thin, the magnetic circuit provided in this embodiment is not broken. The second sheet is then a conventional heat sink sheet 2.
As a specific implementation manner of this embodiment, the middle supporting structure 5 in this embodiment further includes a third screw 512, the first plate bodies 511 are disposed on two adjacent first sheets, the first connecting plates 513 are disposed on the ends of the two first plate bodies 511 away from the magnetic circuit, the two first connecting plates 513 are overlapped, and the third screw 512 passes through the frame 6 and the two first connecting plates 513 and is screwed with the third nut 514, so that the first connecting plate 513 and the second connecting plate 423 are connected to the frame 6 by the cooperation of the third screw 512 and the third nut 514. In this embodiment, the third screw 512 and the third nut 514 are both structural members made of an insulating material, an insulating glue is further coated between the two first connection plates 513 and between the first connection plates 513 and the frame 6, the insulating material may be nylon or plastic, and a gasket made of an insulating material is further padded between the two first connection plates 513.
Of course, the first connecting plate 513 in this embodiment may be connected to the frame 6 by other connecting means, such as being bound to the frame 6 by an insulating tape.
In addition, the number of the middle support structures 5 in the present embodiment is plural, and the plural middle support structures 5 are uniformly distributed on the magnetic circuit along the length direction of the magnetic circuit.
The end support structure 4 provided in this embodiment may be any type of structural member as long as it can support the end of the magnetic circuit.
Example 4:
this embodiment is a more preferred embodiment of embodiment 3, and in particular, provides a central support structure 5.
The middle support structure 5 of this embodiment further includes a first pad plate 521, and the first pad plate 521 is padded between the two first plate bodies 511 of the middle support structure 5 provided in embodiment 3, so that the structural strength of the middle support structure 5 can be enhanced. The first base plate 521 in this embodiment is an insulating hard plate such as a plastic plate, the first base plate 521 can be clamped between the two first base plates 521, preferably, the first base plate 521 is pressed between the two first plate bodies 511 through the cooperation of the fourth screw 522 and the fourth nut 523, and specifically, the fourth screw 522 penetrates through the two first plate bodies 511 and the first base plate 521 and is screwed with the fourth nut 523.
Of course, the first pad 521 in this embodiment may also be connected to the two first plate bodies 511 by bonding.
In addition, the number of the middle support structures 5 of the present embodiment is plural, and the plural middle support structures 5 are uniformly distributed on the magnetic circuit along the length direction of the magnetic circuit.
The end support structure 4 provided in this embodiment may be any type of structural member as long as it can support the end of the magnetic circuit.
Example 5:
the present embodiment is provided as an implementation of the above-described embodiments, and specifically, the present embodiment provides an end support structure 4. The heat sink 2 in this embodiment further includes an end piece at the end of the magnetic circuit.
The end support structure 4 in this embodiment comprises a second block 401 having one end of the second block 401 insulatively connected to an end piece and a middle piece adjacent to the end piece, and the other end of the second block 401 insulatively connected to the frame 6. In addition, the end supporting structure 4 provided by this embodiment further includes a first screw 405 and a second nut 406, the first screw 405 penetrates through the magnetic circuit, both ends of the first screw 405 extend out of the magnetic circuit, two second nuts 406 are respectively screwed on both ends of the first screw 405, and the magnetic circuit can be pressed by using the two second nuts 406. In this configuration, the engagement of the first screw 405 and the second nut 406 causes the magnetic circuit to be compressed, and the second block 401 is configured to couple the end of the magnetic circuit to the frame 6 to support the end of the magnetic circuit.
As a specific embodiment of the present embodiment, the end support structure 4 in the present embodiment further includes a fifth screw 402, a sixth screw 403 and a fifth nut 404, one end of the second block 401 is connected to one end sheet and the middle sheet adjacent to the end sheet through the fifth screw 402 and is pressed by the fifth nut 404, specifically, the fifth screw 402 is threaded onto the fifth nut 404 after passing through the end sheet and the middle sheet adjacent to the end sheet; a screw hole is provided at the other end of the second block 401, and a sixth screw 403 is screwed into the screw hole of the second block 401 after passing through the frame 6. The second block 401, the fifth screw 402, the sixth screw 403 and the fifth nut 404 in this embodiment are all structural members made of insulating materials, such as plastics or nylon.
Of course, the second block 401 in this embodiment can also be connected to the end plate and the frame 6 by other connection methods, such as pin joint, snap joint, etc.
In addition, one end support structure 4 is provided at each of both ends of the magnetic circuit in the present embodiment.
Example 6:
this embodiment is another embodiment of embodiment 5, specifically, this embodiment provides another end support structure 4, the end support structure 4 in this embodiment includes end plates 411, one end plate 411 is respectively disposed at both ends of the magnetic circuit, and the end plates 411 are insulated and connected to the frame 6. The end support structure 4 in this embodiment further includes a second screw 413 and a sixth nut 414, the second screw 413 passes through the two end plates 411 and the magnetic circuit, both ends of the second screw 413 extend out of the end plates 411, one sixth nut 414 is screwed to both ends of the second screw 413, and the two sixth nuts 414 press the end plates 411 against the magnetic circuit.
Specifically, the heat sink sheet 2 in this embodiment also includes end pieces at both ends of the magnetic circuit, and a tenth screw 415 is screwed into the ninth nut 416 after passing through the end plate 411 and one of the end pieces, so that the end plate 411 and the end pieces are connected together. The end plate 411 in this embodiment is connected to the frame 6 by a seventh screw 412, specifically, a screw hole is provided at one end of the end plate 411 away from the magnetic circuit, and the seventh screw 412 is screwed into the screw hole on the end plate 411 after penetrating through the frame 6. In addition, the end plate 411, the seventh screw 412, the tenth screw 415, and the ninth nut 416 in this embodiment are all structural members made of an insulating material, such as plastic or nylon.
Of course, the end plate 411 in this embodiment may be connected to the frame 6 by other connecting means, such as pin joint, snap joint, etc.
In addition, one end support structure 4 is provided at each of both ends of the magnetic circuit in the present embodiment.
Example 7:
this embodiment is another implementation of embodiment 5, and specifically, this embodiment also provides an end support structure 4.
The end support structure 4 in this embodiment includes a second plate 421, and the heat sink sheet 2 in this embodiment also includes an end sheet located at the end of the magnetic circuit, the second plate 421 is integrally formed or welded on the end sheet and a middle sheet adjacent to the end sheet, a second connecting plate 423 is integrally formed or welded on a free end of the second plate 421, the second connecting plate 423 is perpendicular to the second plate 421, and the second connecting plate 423 is connected to the frame 6 in an insulating manner. The end sheet body and the middle sheet body adjacent to the end sheet body in the embodiment are different from a conventional heat sink structure, and not only have a heat dissipation function, but also have a supporting function of being connected with the frame 6 to form a traction and hanging connection for a magnetic circuit. Since the heat dissipating sheet 2 is thin, the magnetic circuit provided in this embodiment is not broken.
As a specific implementation manner of this embodiment, the end supporting structure 4 in this embodiment further includes an eighth screw 422, the end sheet body and a middle sheet body adjacent to the end sheet body are both provided with one second connecting plate 423, the two second connecting plates 423 are overlapped, and the eighth screw 422 passes through the frame 6 and the two second connecting plates 423 and then is screwed with the seventh nut 424, so that the two second connecting plates 423 are connected to the frame 6 by the cooperation of the eighth screw 422 and the seventh nut 424. In this embodiment, the eighth screw 422 and the seventh nut 424 are structural members made of an insulating material, and an insulating glue is further coated between the two second connecting plates 423 and between the second connecting plates 423 and the frame 6, where the insulating material may be nylon or plastic.
Of course, the second connecting plate 423 of the present embodiment may be connected to the frame 6 by other connecting means, such as being bound to the frame 6 by an insulating tape.
Example 8:
this example is another implementation of example 5, and specifically, provides an end support structure 4.
The end support structure 4 in this embodiment includes a second pad 431, and the second pad 431 is padded between the two pieces of the second plate 421 provided in embodiment 7. This enhances the structural strength of the end support structure 4. The second pad 431 in this embodiment is an insulating hard plate such as a plastic plate, and the second pad 431 may be clamped between the two second pads 431, and optimally, the second pad 431 is compressed between the two second plate bodies 421 through the cooperation of the ninth screw 432 and the eighth nut 433, and specifically, the ninth screw 432 is screwed with the eighth nut 433 after passing through the two second plate bodies 421 and the second pad 431.
Of course, the second pad 431 in this embodiment may also be connected to the two second plate 421 by adhesion.
Example 9:
the present embodiment provides a linear magnetic circuit device, where an end supporting structure 4 in the linear magnetic circuit device is another structure, the end supporting structure 4 in the present embodiment includes a first plate, a second plate, and a connecting portion, the connecting portion connects the first plate and the second plate and forms an interlayer between the first plate and the second plate for clamping an end portion of a magnetic circuit, specifically, the connecting portion in the present embodiment is an eleventh screw and a tenth nut, at this time, the first plate, the second plate, the eleventh screw, and the tenth nut form a clamping structure, specifically, the first plate and the second plate may be insulating plates, and the first plate and the second plate may also be non-insulating plates. The first plate and the second plate are both fixedly connected to the frame 6.
In addition, the middle supporting structure 5 in this embodiment is a clamping holder 100, the clamping holder 100 includes a first rod, a second rod and a third rod, the second rod is connected between the first rod and the third rod to form a U-shaped structure, the magnetic circuit is overlapped on the second rod and located between the first rod and the third rod, and the lengths of the first rod and the third rod are greater than the height of the magnetic circuit, that is, the free end ends of the first rod and the third rod are used for being connected with the frame 6, specifically, the first rod and the third rod are both fixedly connected to the frame 6 outside the magnetic circuit, so that the U-shaped structure supports the magnetic circuit, thereby preventing the magnetic circuit from being broken due to too large span.
It should be noted that the first rod, the second rod, and the third rod in this embodiment may be insulating rods, or may not be insulating rods, and when the first rod, the second rod, and the third rod are non-insulating rods, insulating coatings may be sprayed on the first rod, the second rod, and the third rod, or insulating base plates may be bonded to positions where the first rod and the third rod are connected to the frame 6. In addition, a plurality of the card holders 100 are uniformly distributed on the magnetic circuit along the longitudinal direction of the magnetic circuit.
With the structure, the screw does not penetrate through the whole magnetic circuit, so that the magnetic circuit has better effect.
Example 10:
the present embodiment provides a linear magnetic circuit device in which the end support structures 4 and the middle support structure 5 are both the card holders 100 of embodiment 9.
Example 11:
the present embodiment provides an electromagnetic induction heater employing the above-described linear magnetic circuit device. The electromagnetic induction heater has better and more balanced heating effect because the magnetic circuit of the linear magnetic circuit device can not break the magnetic field.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A linear magnetic circuit device, comprising:
the magnetic circuit comprises a magnetizer and a radiating sheet, wherein a plurality of magnetizers and radiating sheets are laminated together to form a magnetic circuit;
the magnetic circuit is a continuous complete magnetizer;
a coil mounted in the magnetic circuit;
the bearing assembly is supported at the periphery of the magnetic circuit to support the magnetic circuit;
the back-up assembly includes an end support structure, a middle support structure, and a frame, the end support structure and the middle support structure respectively back up the end portion and the middle portion of the magnetic circuit, and the end support structure and the middle support structure are both connected to the frame.
2. A linear magnetic circuit device according to claim 1, wherein:
the heat dissipation sheet comprises a plurality of middle sheet bodies positioned in the middle of the magnetic circuit;
the middle supporting structure comprises a first block body, one end of the first block body is connected to at least two middle sheet bodies in an insulating mode, and the other end of the first block body is connected to the frame in an insulating mode.
3. A linear magnetic circuit device according to claim 1, wherein:
the heat dissipation sheet comprises a plurality of middle sheet bodies positioned in the middle of the magnetic circuit;
middle part bearing structure includes first plate body, the middle part lamellar body includes a plurality of first thin slices and second thin slice, at least two be equipped with on the first thin slice the first plate body, the free end of first plate body is equipped with first connecting plate, first connecting plate insulating connection is in on the frame.
4. A linear magnetic circuit device according to claim 3, wherein: the middle supporting structure further comprises a first base plate, and the first base plate is arranged between the two first plate bodies in a cushioning mode.
5. A linear magnetic circuit device according to any of claims 2-4, wherein:
the heat dissipation sheet comprises an end sheet body positioned at the end part of the magnetic circuit;
the end supporting structure comprises a second block body, one end of the second block body is connected to one end sheet body and a middle sheet body adjacent to the end sheet body in an insulating mode, and the other end of the second block body is connected to the frame in an insulating mode;
the end supporting structure further comprises a first screw and a second nut, the first screw penetrates through the magnetic circuit, two ends of the first screw extend out of the magnetic circuit, the second nut is connected to two ends of the first screw in a threaded mode, and the two second nuts press the magnetic circuit tightly.
6. A linear magnetic circuit device according to any of claims 2-4, wherein:
the end supporting structure comprises end plates, two ends of the magnetic circuit are respectively provided with one end plate, and the end plates are connected to the frame in an insulating mode;
the end supporting structure further comprises second screw rods and sixth nuts, the second screw rods penetrate through the two end plates and the magnetic circuit, the two ends of each second screw rod extend out of the end plates, the sixth nuts are connected to the two ends of each second screw rod in a threaded mode, and the end plates are tightly pressed on the magnetic circuit through the two sixth nuts.
7. A linear magnetic circuit device according to any of claims 2-4, wherein:
the heat dissipating sheet includes an end piece located at an end of the magnetic circuit;
the end supporting structure comprises a second plate body, the end part plate body and a middle plate body adjacent to the end part plate body are provided with the second plate body, the free end of the second plate body is provided with a second connecting plate, and the second connecting plate is connected to the frame in an insulating mode.
8. A linear magnetic circuit device according to claim 7, wherein: the end support structure further comprises a second base plate, and the second base plate is mounted between the two second plate bodies in a cushioning mode.
9. An electromagnetic induction heater, characterized by: a linear magnetic circuit device comprising the magnetic circuit device according to any of claims 1 to 8.
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| CN202110046251.3A CN112911747B (en) | 2021-01-14 | 2021-01-14 | Linear magnetic circuit device and electromagnetic induction heater |
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| CN202110046251.3A CN112911747B (en) | 2021-01-14 | 2021-01-14 | Linear magnetic circuit device and electromagnetic induction heater |
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| CN112911747B true CN112911747B (en) | 2022-12-13 |
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| JP2009277547A (en) * | 2008-05-15 | 2009-11-26 | Omron Corp | Electromagnetic induction heating type fluid heating device |
| CN205238530U (en) * | 2015-10-20 | 2016-05-18 | 富通集团有限公司 | Plastic extruding machine |
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| CN201892260U (en) * | 2010-11-25 | 2011-07-06 | 深圳拓邦股份有限公司 | Electromagnetic heating heater |
| CN209923383U (en) * | 2019-04-16 | 2020-01-10 | 北京科技大学 | Slab induction heating device |
| CN215871899U (en) * | 2021-01-13 | 2022-02-18 | 首钢京唐钢铁联合有限责任公司 | Linear magnetic circuit device and induction heater |
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2021
- 2021-01-14 CN CN202110046251.3A patent/CN112911747B/en active Active
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|---|---|---|---|---|
| JP2001118670A (en) * | 1999-10-18 | 2001-04-27 | Fuji Xerox Co Ltd | Electromagnetic induction heater and picture recorder using same |
| JP2004073372A (en) * | 2002-08-13 | 2004-03-11 | Nakanishi Mfg Co Ltd | Continuous heating apparatus |
| JP2009277547A (en) * | 2008-05-15 | 2009-11-26 | Omron Corp | Electromagnetic induction heating type fluid heating device |
| CN205238530U (en) * | 2015-10-20 | 2016-05-18 | 富通集团有限公司 | Plastic extruding machine |
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| CN112911747A (en) | 2021-06-04 |
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