CN223714209U - Electromagnetic induction heater and electromagnetic induction heating device - Google Patents
Electromagnetic induction heater and electromagnetic induction heating deviceInfo
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- CN223714209U CN223714209U CN202423136638.6U CN202423136638U CN223714209U CN 223714209 U CN223714209 U CN 223714209U CN 202423136638 U CN202423136638 U CN 202423136638U CN 223714209 U CN223714209 U CN 223714209U
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- electromagnetic induction
- induction heating
- heating coil
- induction heater
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Abstract
本实用新型公开了一种电磁感应加热器和电磁感应加热装置，电磁感应加热器包括支架、电磁感应加热线圈和多个导磁体；支架呈环状，每个导磁体连接于支架，各个导磁体沿支架的环形轮廓间隔排列；电磁感应加热线圈环绕在全部导磁体上，每个导磁体的长度方向平行于电磁感应加热线圈的中轴线。环状的支架适配于轴、轴套类形状的工件，环状的支架为电磁感应加热线圈的安装提供基础，将支架套在待加热工件的外周，即可使得电磁感应加热线圈位于待加热工件的外周，依靠电磁感应原理加热工件。导磁体可以增大电磁感应加热线圈的自感，并将磁场聚集在电磁感应加热线圈之间，从而增强磁场集中度，提高涡流和焦耳热的效率，能够有效提高待加热工件的加热效率。
This utility model discloses an electromagnetic induction heater and an electromagnetic induction heating device. The electromagnetic induction heater includes a support, an electromagnetic induction heating coil, and multiple magnetic conductors. The support is ring-shaped, and each magnetic conductor is connected to the support, with the magnetic conductors spaced apart along the ring-shaped contour of the support. The electromagnetic induction heating coil is wrapped around all the magnetic conductors, and the length direction of each magnetic conductor is parallel to the central axis of the electromagnetic induction heating coil. The ring-shaped support is suitable for workpieces with shaft or bushing shapes. The ring-shaped support provides a foundation for the installation of the electromagnetic induction heating coil. By placing the support around the outer circumference of the workpiece to be heated, the electromagnetic induction heating coil is positioned around the outer circumference of the workpiece, and the workpiece is heated by electromagnetic induction. The magnetic conductors can increase the self-inductance of the electromagnetic induction heating coil and concentrate the magnetic field between the electromagnetic induction heating coils, thereby enhancing the magnetic field concentration and improving the efficiency of eddy currents and Joule heating, effectively improving the heating efficiency of the workpiece.
Description
Technical Field
The present utility model relates to a heating device, and more particularly, to an electromagnetic induction heater and an electromagnetic induction heating device.
Background
In the parts of the machine, a portion of the work piece is an interference fit, such as a shaft-to-sleeve fit. The heating assembly mainly utilizes the characteristic of thermal expansion and contraction of an object, heats one of the two parts assembled to a certain temperature, makes the part expand to a certain degree, then immediately installs the part on the other matched part, and tightly combines the two parts together through cooling and contraction to form a whole, thereby achieving the purpose of thermal assembly. The heating disassembly and the heating assembly principle are the same, and when the workpiece with interference fit is disassembled, the workpiece is required to be heated first to expand to a certain extent, so that the workpiece can be separated. For example, in the nuclear power field, the CVR motor rotor main shaft is assembled and disassembled with the coupling, the shielding water pump main shaft is assembled and disassembled with the flange, and the like. However, the existing heater is usually manufactured by using a mica sheet winding heating wire mode, the heating wire needs to be wound on a workpiece to be heated layer by layer manually, time and labor are wasted, the power of the heating wire is limited, the power of the heater is lower, the heating depth on the workpiece is insufficient, the heating time of the workpiece is long, and the working efficiency is lower.
Disclosure of utility model
The utility model aims at solving the technical problem of providing an electromagnetic induction heater and an electromagnetic induction heating device aiming at least one defect of the background technology.
The technical scheme includes that the electromagnetic induction heater comprises a support, electromagnetic induction heating coils and a plurality of magnetizers, wherein the support is annular, each magnetizer is connected to the support, the magnetizers are arranged at intervals along the annular outline of the support, the electromagnetic induction heating coils encircle all the magnetizers, and the length direction of each magnetizer is parallel to the central axis of the electromagnetic induction heating coil.
In some embodiments, the bracket comprises a first arc-shaped part and a second arc-shaped part, wherein the first arc-shaped part comprises a first end and a second end which are opposite on the arc-shaped outline, the second arc-shaped part comprises a third end and a fourth end which are opposite on the arc-shaped outline, the first end and the third end are rotationally connected, and the second end and the fourth end are opened and closed along with the relative rotation of the first end and the third end.
In some embodiments, the electromagnetic induction heating coil comprises a first coil section located in the first portion and a second coil section located in the second portion, the first coil section being provided with a first cable coupling at an end thereof adjacent to the second end, the second coil section being provided with a second cable coupling at an end thereof adjacent to the fourth end, the first cable coupling and the second cable coupling being detachably connected.
In some embodiments, the bracket comprises two annular side plates which are arranged in parallel at intervals, and two ends of each magnetizer in the length direction are respectively connected with the two side plates.
In some embodiments, the electromagnetic induction heater further comprises an electromagnetic shielding shell, wherein the electromagnetic shielding shell is arranged on one side of the magnetizer in the direction away from the central axis, and the electromagnetic shielding shell is respectively connected with the two side plates.
In some embodiments, the electromagnetic shield housing is provided with an opening, the electromagnetic induction heating coil has two first plug ends for connecting to a power supply device, the two first plug ends being exposed through the opening, and/or the electromagnetic induction heater further comprises a temperature measuring element in contact with the electromagnetic induction heating coil, the temperature measuring element comprising a second plug end for connecting to the power supply device, the second plug end being exposed through the opening.
In some embodiments, a surface of each magnetizer facing the electromagnetic induction heating coil is provided with a plurality of grooves, and the electromagnetic induction heating coil comprises a plurality of cables which are embedded and fixed in a one-to-one correspondence manner.
In some embodiments, the electromagnetic induction heating coil includes a wire layer, an insulating coating, and an insulating sheath that are sequentially stacked from inside to outside.
In some embodiments, the material of the magnetic conductor comprises at least one of manganese zinc ferrite, neodymium iron boron magnetic core, samarium cobalt magnetic core.
The utility model also provides an electromagnetic induction heating device which comprises a power supply device and any electromagnetic induction heater, wherein the power supply device is connected with the electromagnetic induction heater to supply power for the electromagnetic induction heater.
The utility model has the advantages that as each magnetizer is connected with the annular bracket, the magnetizers are arranged at intervals along the annular outline of the bracket, the electromagnetic induction heating coil surrounds all the magnetizers, the annular bracket is adapted to the shaft and shaft sleeve-shaped workpieces, the annular bracket provides a basis for the installation of the electromagnetic induction heating coil, and the bracket is sleeved on the periphery of the workpiece to be heated, so that the electromagnetic induction heating coil is positioned on the periphery of the workpiece to be heated, and the workpiece is heated by virtue of the electromagnetic induction principle. Therefore, heating wires do not need to be wound on the periphery of each workpiece to be heated, the working time is saved, and the working efficiency is improved. On the other hand, because electromagnetic induction heating coils encircle on all magnetizers to the length direction of every magnetizer is on a parallel with electromagnetic induction heating coil's axis, these magnetizers can increase electromagnetic induction heating coil's self-inductance, and gathers magnetic field between electromagnetic induction heating coils, thereby strengthen magnetic field concentration, improve the efficiency of vortex and joule's heat, can effectively improve the heating efficiency of waiting to heat the work piece.
Drawings
In order to more clearly illustrate the technical scheme of the utility model, the utility model will be further described with reference to the accompanying drawings and embodiments, wherein:
fig. 1 is a schematic view of an electromagnetic induction heater according to some embodiments of the present utility model in an open state;
Fig. 2 is a schematic view of the electromagnetic induction heater shown in fig. 1 in a closed state;
FIG. 3 is a schematic view of the electromagnetic induction heater of FIG. 1 with a portion of the electromagnetic shield hidden;
FIG. 4 is a schematic circuit diagram of an electromagnetic induction heating apparatus according to some embodiments of the present utility model;
FIG. 5 is a schematic diagram of the magnetic field distribution of an electromagnetic induction heater according to some embodiments of the present utility model;
fig. 6 is an enlarged schematic view of a partial structure of an electromagnetic induction heater according to some embodiments of the present utility model.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings. In the following description, it should be understood that terms such as "mounted," "connected," "secured," "disposed," and the like should be construed broadly, as they are, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise specifically indicated and defined. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The utility model provides an electromagnetic induction heating device which comprises a power supply device and an electromagnetic induction heater, wherein the power supply device is connected with the electromagnetic induction heater and provides power for the electromagnetic induction heater.
As shown in fig. 1, an electromagnetic induction heater according to an embodiment of the present utility model may be used for the heating disassembly of various shaft and sleeve-fitted workpieces in a nuclear power plant, such as a CVR motor rotor spindle and coupling, a shield water pump spindle and flange, and the like. Of course, the electromagnetic induction heater can also be applied to the heating disassembly and assembly of shaft and sleeve matched workpieces in other fields.
The electromagnetic induction heater comprises at least a bracket, an electromagnetic induction heating coil 2 and a plurality of magnetizers 3. The bracket can be made of mica plates, silicate or polyphenyl ether ketone (PPEK) and other high-temperature resistant materials which are easy to machine. The support is annular, and each magnetizer 3 is connected with the support. The respective magnetizers 3 are arranged at intervals along the annular contour of the support, that is, the respective magnetizers 3 are arranged at intervals on the support with the annular contour of the support as a reference. The electromagnetic induction heating coil 2 surrounds all the magnetizers 3. Specifically, the electromagnetic induction heating coil 2 surrounds the outside of the magnetizer 3, that is, the side of the magnetizer 3 away from the central axis Y of the electromagnetic induction heating coil 2. And each magnetizer 3 is in a strip shape, and the length direction of each magnetizer 3 is parallel to the central axis Y of the electromagnetic induction heating coil 2.
The annular support is adapted to the workpieces in the shapes of shafts and shaft sleeves, the annular support provides a foundation for the installation of the electromagnetic induction heating coil 2, the support is sleeved on the periphery of the workpiece to be heated, and the electromagnetic induction heating coil 2 can be located on the periphery of the workpiece to be heated, and the workpiece is heated by means of an electromagnetic induction principle. Therefore, heating wires do not need to be wound on the periphery of each workpiece to be heated, the working time is saved, and the working efficiency is improved.
As shown in fig. 4, a power supply device is connected to the electromagnetic induction heating coil 2. The principle of heating the workpiece by the electromagnetic induction heating coil 2 is that an induction power supply in a power supply device is connected to a commercial power supply, and 220V/380V alternating current is rectified into a direct current power supply by a rectification circuit 71. The rectifying circuit 71 rectifies three-phase alternating current into direct current based on the basic principle of unidirectional conduction and cut-off of diodes or thyristors. The dc power supply is coupled to the igbt 73 and the resonant capacitor 74 via the controller 72. The resonant capacitor 74 and the electromagnetic induction heating coil 2 (corresponding to one inductor) form an oscillating circuit 75, and the oscillating circuit 75 can enable the electromagnetic induction heating coil 2 to obtain an oscillating current with a magnitude and a direction which vary periodically. When an oscillating current of a certain frequency is passed through the electromagnetic induction heating coil 2, an alternating magnetic field having the same frequency as the current change frequency is generated inside and outside the coil. The metal workpiece is placed in the space surrounded by the electromagnetic induction heating coil 2, and under the action of the magnetic field, the induction current with the same frequency as the electromagnetic induction heating coil 2 and opposite direction is generated in the workpiece. Since the induced current forms a closed loop along the surface of the workpiece, it is commonly referred to as eddy currents. The eddy current changes electric energy into heat energy, and rapidly heats the surface of the workpiece. In other words, based on the law of electromagnetic induction, when an oscillating current flows through the electromagnetic induction heating coil 2, a strong magnetic beam with polarity changing at high frequency is generated inside the electromagnetic induction heating coil 2, and a workpiece to be heated made of metal is placed inside the electromagnetic induction heating coil 2, and the strong magnetic beam penetrates through the whole workpiece to be heated. In the interior of the workpiece to be heated, eddy currents are generated in the direction opposite to the current of the electromagnetic induction heating coil 2, and when the eddy currents act on the metal workpiece due to the internal resistance of the workpiece to be heated, joule heat is generated in the interior of the workpiece, so that the temperature of the workpiece is rapidly increased, and the purpose of heating the metal workpiece is achieved. Reference is made to the prior art for more principles of electromagnetic induction heating.
As shown in fig. 5, fig. 5 shows a magnetic induction line distribution diagram after the addition of the magnetizer 3 to the inside of the electromagnetic induction heating coil 2. The magnetic induction lines are indicated by dashed lines with arrows. The addition of the magnetizer 3 at the inner side of the electromagnetic induction heating coil 2 can increase the self-inductance of the electromagnetic induction heating coil 2 and gather the magnetic field between the electromagnetic induction heating coils 2, thereby enhancing the concentration of the magnetic field and further improving the efficiency of eddy current and joule heat, and further improving the heating speed and effect. The material of the magnetizer 3 may include at least one of manganese-zinc ferrite, neodymium-iron-boron magnetic core, and samarium-cobalt magnetic core. The material of each magnetizer 3 can be selected as one of a manganese-zinc ferrite, a neodymium-iron-boron magnetic core and a samarium-cobalt magnetic core, or the material of a plurality of magnetizers 3 can be selected as one of a manganese-zinc ferrite, a neodymium-iron-boron magnetic core and a samarium-cobalt magnetic core, and the material of the other magnetizers 3 can be selected as the other one of a manganese-zinc ferrite, a neodymium-iron-boron magnetic core and a samarium-cobalt magnetic core, namely the materials of the magnetizers 3 can be the same or different.
In summary, since each magnetizer 3 is connected to the annular bracket, the magnetizers 3 are arranged at intervals along the annular outline of the bracket, the electromagnetic induction heating coil 2 surrounds all the magnetizers 3, the annular bracket is adapted to the shaft and shaft sleeve type workpieces, the annular bracket provides a foundation for the installation of the electromagnetic induction heating coil 2, the bracket is sleeved on the periphery of the workpiece to be heated, so that the electromagnetic induction heating coil 2 is positioned on the periphery of the workpiece to be heated, and the workpiece is heated by means of the electromagnetic induction principle. Therefore, heating wires do not need to be wound on the periphery of each workpiece to be heated, the working time is saved, and the working efficiency is improved. On the other hand, since the electromagnetic induction heating coils 2 are wound around all the magnetizers 3, and the length direction of each magnetizer 3 is parallel to the central axis Y of the electromagnetic induction heating coil 2, these magnetizers 3 can increase the self-inductance of the electromagnetic induction heating coils 2 and concentrate the magnetic field between the electromagnetic induction heating coils 2, thereby enhancing the concentration of the magnetic field, improving the efficiency of eddy current and joule heat, and effectively improving the heating efficiency of the workpiece to be heated.
As shown in fig. 1-3, in some embodiments, the bracket includes arcuate first and second portions 101, 102. The first portion 101 and the second portion 102 may each be semi-circular in shape. The first portion 101 includes first and second ends 101A, 101B opposite in arcuate profile, and the second portion 102 includes third and fourth ends 102A, 102B opposite in arcuate profile. The first end 101A and the third end 102A are rotatably connected, and the second end 101B and the fourth end 102B open and close along with the relative rotation of the first end 101A and the third end 102A. That is, the second end 101B and the fourth end 102B are switchable between a first position and a second position as the first end 101A and the third end 102A are relatively rotated. Specifically, in the first position, the second end 101B and the fourth end 102B are relatively separated, as shown in fig. 1, and in the second position, the second end 101B and the fourth end 102B are joined, as shown in fig. 2. From this, can be convenient, fast with the support cover on the periphery of waiting to heat the work piece through opening and shutting of support, also can be convenient, take off the support from waiting to heat the periphery of work piece fast through opening and shutting of support, further promote electromagnetic induction heater and wait to heat the dismouting efficiency between the work piece, saved operating time, promoted work efficiency.
As shown in fig. 1-3, in some embodiments, the corresponding bracket includes arcuate first and second portions 101, 102, and the electromagnetic induction heating coil 2 mounted on the bracket includes a first coil section 21 at the first portion 101 and a second coil section 22 at the second portion 102. The first coil section 21 is provided with a first cable 20 coupling 61 at an end thereof adjacent to the second end 101B and the second coil section 22 is provided with a second cable 20 coupling 62 at an end thereof adjacent to the fourth end 102B. The first cable 20 coupling 61 and the second cable 20 coupling 62 are detachably connected. Specifically, as shown in fig. 1, in the first position, the second end 101B and the fourth end 102B are relatively separated, the first cable 20 coupler 61 and the second cable 20 coupler 62 are also relatively separated, the electromagnetic induction heating coil 2 is in an open state, no current is generated in the electromagnetic induction heating coil 2, and as shown in fig. 2, in the second position, the second end 101B and the fourth end 102B are joined together, the first cable 20 coupler 61 and the second cable 20 coupler 62 are also connected together, the electromagnetic induction heating coil 2 is in a closed state, and the electromagnetic induction heating coil 2 is capable of generating an oscillating current under the drive of the power supply device.
As shown in fig. 3, in some embodiments, the bracket includes two annular side plates 11 disposed in parallel and spaced apart relation, and two ends of each magnetizer 3 in the length direction are connected to the two side plates 11, respectively. Specifically, the edge of each side plate 11 is concavely provided with mounting grooves, and the number of mounting grooves on each side plate 11 is equal to the number of magnetizers 3. The two ends of each magnetizer 3 in the length direction can be respectively embedded and connected with the two opposite mounting grooves on the two side plates 11, thereby realizing the fixation of the magnetizers 3 on the bracket.
As shown in fig. 1 to 3, in some embodiments, the electromagnetic induction heater further includes an electromagnetic shielding case 4, the electromagnetic shielding case 4 is disposed at a side of the magnetizer 3 away from the central axis Y, and the electromagnetic shielding case 4 is connected to two side plates 11, respectively. The electromagnetic shielding shell 4 is used for reducing outward diffusion leakage of a magnetic field near the electromagnetic induction heating coil 2, so that the magnetic field near a workpiece to be heated can be maintained in a relatively concentrated state to maintain good heating efficiency, and the electromagnetic shielding shell 4 can also prevent the magnetic field of the electromagnetic induction heater from being leaked to affect other equipment, so that the electromagnetic compatibility of the electromagnetic induction heater and the other equipment is improved.
As shown in fig. 1 and 2, in some embodiments, the electromagnetic shield case 4 is provided with an opening 40. The electromagnetic induction heating coil 2 has two first plug terminals 23 for connecting to a power supply device, and the two first plug terminals 23 are exposed to the outside through the opening 40. That is, the opening 40 may provide a space for the first plug terminal 23 to avoid, and the first plug terminal 23 may extend to the outside of the electromagnetic shielding case 4 through the opening 40 to be connected to a power supply device.
As shown in fig. 1 to 3, in some embodiments, the electromagnetic induction heater further includes a temperature measuring element 5, and the temperature measuring element 5 is in contact with the electromagnetic induction heating coil 2. Specifically, the temperature measuring element 5 may be a thermocouple, and a probe of the thermocouple may be directly fixed inside the electromagnetic induction heating coil 2. The temperature measuring element 5 includes a second plug terminal 52 for connecting to a power supply device, the second plug terminal 52 being exposed to the outside through the opening 40. That is, the opening 40 may also provide a space for the second plug end 52 to avoid, and the second plug end 52 may extend out of the electromagnetic shielding shell 4 through the opening 40 to be connected to a power supply device. The power supply device receives temperature information measured by the temperature measuring element 5, so that a person monitors the temperature of the workpiece to be heated and the temperature of the electromagnetic induction heating coil 2 in real time, and when the temperature of the workpiece to be heated or the temperature of the electromagnetic induction heating coil 2 rises to a certain threshold value, the power supply of the electromagnetic induction heating coil 2 is stopped, the fact that the temperature of the electromagnetic induction heating coil 2 is too high and the metallographic structure of the workpiece to be heated is damaged is avoided.
As shown in fig. 1 and 2, in some embodiments, two handles 8 are provided on the electromagnetic shielding shell 4, and the two handles 8 are respectively located on two sides symmetrical along the central axis Y. The handle 8 can be held by a person, and is convenient for carrying the electromagnetic induction heater.
As shown in fig. 6, in some embodiments, the electromagnetic induction heating coil 2 includes a plurality of cables 20. Each cable 20 includes a conductor layer, an insulating coating, and an insulating sheath, which are sequentially stacked from inside to outside. The wire layer may be a copper wire or other metal wire. The material of the insulating coating may include a material having insulating protective properties such as silicone oil, epoxy paint, polytetrafluoroethylene paint, and the like. The insulating sheath further enhances the safety of the electromagnetic induction heating coil 2 on the outside of the insulating coating. The material of the insulating sheath is mainly selected from high-temperature resistant materials, and the material of the insulating sheath can comprise glass fiber cloth, mica tape, polytetrafluoroethylene tape, silica gel, polyimide film and the like.
As shown in fig. 6, in some embodiments, a surface of each magnetizer 3 facing the electromagnetic induction heating coil 2 is provided with a plurality of grooves 30, the electromagnetic induction heating coil 2 includes a plurality of cables 20, and the cables 20 and the grooves 30 are embedded and fixed in a one-to-one correspondence manner, so as to realize that the electromagnetic induction heating coil 2 is limited on the magnetizer 3.
It is to be understood that the foregoing examples merely illustrate preferred embodiments of the present utility model, and are not to be construed as limiting the scope of the utility model, but that it is to be understood that modifications and improvements to the above-described embodiments may be made by those skilled in the art without departing from the spirit of the utility model, and that it is intended to cover all modifications and improvements as fall within the scope of the utility model.
Claims (10)
1. An electromagnetic induction heater is characterized by comprising a bracket, an electromagnetic induction heating coil (2) and a plurality of magnetizers (3);
The support is annular, each magnetizer (3) is connected to the support, and the magnetizers (3) are arranged at intervals along the annular outline of the support;
The electromagnetic induction heating coil (2) is wound around all the magnetizers (3), and the length direction of each magnetizer (3) is parallel to the central axis (Y) of the electromagnetic induction heating coil (2).
2. The electromagnetic induction heater according to claim 1, wherein the bracket comprises an arcuate first portion (101) and a second portion (102);
The first portion (101) comprising a first end (101A) and a second end (101B) opposite on an arcuate profile, the second portion (102) comprising a third end (102A) and a fourth end (102B) opposite on an arcuate profile;
the first end (101A) and the third end (102A) are rotatably connected, and the second end (101B) and the fourth end (102B) are opened and closed along with the relative rotation of the first end (101A) and the third end (102A).
3. The electromagnetic induction heater according to claim 2, characterized in that the electromagnetic induction heating coil (2) comprises a first coil section (21) at the first portion (101) and a second coil section (22) at the second portion (102), the first coil section (21) being provided with a first cable coupling (61) at an end near the second end (101B), the second coil section (22) being provided with a second cable coupling (62) at an end near the fourth end (102B), the first cable coupling (61) and the second cable coupling (62) being detachably connected.
4. Electromagnetic induction heater according to claim 1, characterized in that the bracket comprises two annular side plates (11) arranged in parallel at intervals, and two ends of each magnetizer (3) in the length direction are respectively connected with the two side plates (11).
5. Electromagnetic induction heater according to claim 4, characterized in that it further comprises an electromagnetic shielding shell (4), said electromagnetic shielding shell (4) being arranged on the side of said magnetic conductor (3) in the direction away from said central axis (Y), said electromagnetic shielding shell (4) being connected to two of said side plates (11), respectively.
6. Electromagnetic induction heater according to claim 5, characterized in that the electromagnetic shield (4) is provided with an opening (40);
The electromagnetic induction heating coil (2) is provided with two first plug ends (23) for connecting a power supply device, the two first plug ends (23) are exposed outside through the opening (40), and/or the electromagnetic induction heating coil further comprises a temperature measuring element (5), the temperature measuring element (5) is in contact with the electromagnetic induction heating coil (2), the temperature measuring element (5) comprises a second plug end (52) for connecting the power supply device, and the second plug end (52) is exposed outside through the opening (40).
7. The electromagnetic induction heater according to claim 1, characterized in that a plurality of grooves (30) are provided on a surface of each of the magnetizers (3) facing the electromagnetic induction heating coil (2), the electromagnetic induction heating coil (2) includes a plurality of cables (20), and the cables (20) and the grooves (30) are fitted and fixed in a one-to-one correspondence.
8. The electromagnetic induction heater according to claim 1, characterized in that the electromagnetic induction heating coil (2) comprises a wire layer, an insulating coating layer and an insulating sheath, which are sequentially stacked from inside to outside.
9. The electromagnetic induction heater according to claim 1, characterized in that the material of the magnetizer (3) is one of manganese-zinc ferrite, neodymium-iron-boron core, samarium-cobalt core.
10. An electromagnetic induction heating apparatus comprising a power supply device and an electromagnetic induction heater as claimed in any one of claims 1 to 9, the power supply device being connected to the electromagnetic induction heater to provide power to the electromagnetic induction heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423136638.6U CN223714209U (en) | 2024-12-18 | 2024-12-18 | Electromagnetic induction heater and electromagnetic induction heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423136638.6U CN223714209U (en) | 2024-12-18 | 2024-12-18 | Electromagnetic induction heater and electromagnetic induction heating device |
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| Publication Number | Publication Date |
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| CN223714209U true CN223714209U (en) | 2025-12-23 |
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| CN202423136638.6U Active CN223714209U (en) | 2024-12-18 | 2024-12-18 | Electromagnetic induction heater and electromagnetic induction heating device |
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| Country | Link |
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| CN (1) | CN223714209U (en) |
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