Electromagnetic heating device

Abstract

The utility model discloses an electromagnetic heating device, electromagnetic heating device includes the shell body, and the hollow is formed with the installation cavity in the middle, and the both ends of shell body all have the communicating mouth that penetrates, the heated shell body is built -in in the installation cavity, and the heated shell body penetrates and is used for the heating cavity that corresponding intercommunication of communicating mouth, heating coil, built -in in the installation cavity and the outside wall of heated shell body is set up. Through the heating coil of the outside wall of heated shell body in generating alternating field, through the magnetic field that generates can evenly act on the heating cavity in heated shell body, make the whole of the product of waiting for heating to be in the uniform magnetic field environment, at this moment due to the uniform distribution of magnetic field, make the product of waiting for heating can evenly produce induction eddy current, thereby realize even heating.

Description

Technical Field

[0001] This utility model relates to the technical field of heat treatment, and in particular to an electromagnetic heating device. Background Technology

[0002] Existing electromagnetic heating devices generate heat directly from the product being heated through electromagnetic induction, enabling rapid temperature increases to the desired level and shortening heating time. However, some current electromagnetic heating methods are prone to uneven heating. For example, the heating wires in these devices are typically located at the bottom or top of the container. The heat generated initially occurs near the heating wires and then gradually transfers to the entire container via heat conduction. Because the speed and efficiency of heat conduction vary at different locations, uneven heat distribution occurs; for instance, areas near the heating wires are hotter than areas further away, potentially leading to localized overheating or underheating. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides an electromagnetic heating device.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] An electromagnetic heating device, the electromagnetic heating device comprising:

[0006] The outer shell has a hollow interior forming an installation cavity, and both ends of the outer shell have through-holes.

[0007] A heated housing is built into the mounting cavity; the heated housing has a heating cavity that is connected to the corresponding communication port.

[0008] A heating coil is built into the mounting cavity and sleeved on the outer wall of the heated housing.

[0009] As a preferred technical solution of this utility model, the heated shell includes multiple wire guide plates, and each wire guide plate surrounds the other to form the heating cavity.

[0010] As a preferred technical solution of this utility model, each of the wire-passing plates is a synthetic stone plate.

[0011] As a preferred technical solution of this utility model, the end faces of the two wire-passing plates are each provided with a first epoxy plate.

[0012] As a preferred technical solution of this utility model, the outer shell includes an annular frame and two side cover plates; each of the side cover plates is symmetrically and detachably disposed on both sides of the annular frame; each of the communication ports is disposed on each of the side cover plates.

[0013] As a preferred technical solution of this utility model, multiple fixing holes are provided on both sides of the annular frame; each of the side cover plates is provided with a locking hole that is respectively connected to each of the fixing holes.

[0014] The electromagnetic heating device also includes multiple locking components, each of which is inserted into a locking hole and a fixing hole.

[0015] As a preferred technical solution of this utility model, each of the side cover plates is a second epoxy board.

[0016] As a preferred technical solution of this utility model, the outer shell has a plurality of ventilation openings that are all connected to the mounting cavity;

[0017] The mounting cavity is equipped with multiple detachable radiators, and the airflow direction of each radiator is directed toward each of the ventilation ports.

[0018] As a preferred technical solution of this utility model, the outer shell has multiple heat dissipation ports that are all connected to the mounting cavity.

[0019] As a preferred technical solution of this utility model, each of the heat dissipation vents is provided with an airflow guiding part.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] An alternating magnetic field is generated by a heating coil fitted on the outer wall of the heated shell. This magnetic field acts uniformly on the heating cavity inside the heated shell, placing the product to be heated in a uniform magnetic field environment. Due to the uniform distribution of the magnetic field, the product to be heated can generate induced eddy currents uniformly, thereby achieving uniform heating. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an overall structural diagram of an embodiment of the present utility model.

[0024] Figure 2 yes Figure 1 Exploded view of the structure.

[0025] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0026] Figure 4 This is a structural diagram of the heated housing and heating coil of this utility model embodiment.

[0027] Numbers in the diagram

[0028] 1. Outer shell; 11. Mounting cavity; 12. Annular frame; 121. Fixing hole; 13. Side cover plate; 131. Locking hole; 14. Connecting port; 15. Heat dissipation vent; 16. Airflow guide;

[0029] 2. Heated shell; 21. Heating cavity; 22. Wire guide plate; 23. First epoxy plate;

[0030] 3. Heating coil;

[0031] 4. Radiator. Detailed Implementation

[0032] To make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following describes this application in further detail with reference to the accompanying drawings and embodiments.

[0033] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0034] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or indirectly on that other component.

[0035] When a component is said to be "connected to" another component, it can be directly connected to the other component or indirectly connected to that other component.

[0036] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0038] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0039] In order to solve the technical problem of uneven heat distribution on the product to be heated when heating it in the prior art, this utility model provides an electromagnetic heating device.

[0040] The following describes in detail the specific structure of an electromagnetic heating device provided by an embodiment of this utility model, according to the appendix. Figure 1-4 As shown, the specific structure of the electromagnetic heating device includes an outer shell 1, a heated shell 2, and a heating coil 3.

[0041] according to Figure 2 As shown, the outer shell 1 has a hollow cavity 11, and both ends of the outer shell 1 have through-holes 14.

[0042] Specifically, the outer shell 1 is the external annular frame 12 of the entire device, serving to protect and secure the internal components. The interior of the outer shell 1 is hollow, forming a mounting cavity 11 for accommodating the heated housing 2 and the heating coil 3. Both ends of the housing have through-holes 14, which are used to connect with the heating chamber 21 of the heated housing 2, facilitating the entry and exit of the product to be heated into and out of the heating chamber 21.

[0043] according to Figure 2 As shown, the heated housing 2 is built into the mounting cavity 11; the heated housing 2 has a heating cavity 21 that is connected to the corresponding communication port 14.

[0044] Specifically, the heating shell 2 is built into the mounting cavity 11 of the outer shell 1, located inside the heating coil 3. A heating cavity 21 extends through the interior of the heating shell 2, communicating with the communication port 14 of the outer shell 1 to accommodate the product to be heated. Since the heating shell 2 is made of a highly conductive metal material (such as stainless steel or aluminum), eddy currents are generated inside the heating shell 2 during electromagnetic induction, thus achieving self-heating. The heating coil 3 is built into the mounting cavity 11 and fitted onto the outer wall of the heating shell 2.

[0045] according to Figure 2 As shown, the heating coil 3 is built into the mounting cavity 11 and sleeved on the outer wall of the heated housing 2.

[0046] Specifically, the function of heating coil 3 is to generate an alternating magnetic field. When an alternating current is passed through heating coil 3, an alternating magnetic field is generated around it. This alternating magnetic field penetrates the heated shell 2, inducing an electromotive force inside the heated shell 2, thereby generating eddy currents. Under the resistance of the heated shell 2, the eddy currents generate Joule heat, causing the heated shell 2 to heat up itself. Since the heated shell 2 is in direct contact with the product to be heated inside the heating chamber 21, the heat is transferred to the product to be heated through thermal conduction, thus achieving the heating purpose.

[0047] It should be noted that the shape and size of the heating chamber 21 can be designed according to the characteristics of the product to be heated. For example, for liquid heating, the heating chamber 21 can be cylindrical or cuboid to ensure that the liquid can be heated evenly.

[0048] It is understood that the heating coil 3 in this embodiment of the invention is electrically connected to a high-frequency AC power supply. This power supply can output a high-frequency alternating current, which generates a strong induced electromotive force and eddy currents within the heated housing 2. For example, the two ends of the heating coil 3 are connected to the output terminals of the high-frequency AC power supply via wires. The positive and negative terminals of the power supply are respectively connected to the two ends of the heating coil 3, forming a closed circuit.

[0049] During the heating process, when the electromagnetic heating device is energized, an alternating current is introduced into the heating coil 3. As the alternating current flows through the heating coil 3, it generates an alternating magnetic field around it. This alternating magnetic field can penetrate the heated shell 2, inducing an electromotive force inside the heated shell 2, which in turn generates eddy currents. Under the resistance of the heated shell 2, the eddy currents generate Joule heat, causing the heated shell 2 to heat up. As the temperature of the heated shell 2 rises, the heat is transferred to the product to be heated in the heating chamber 21 through heat conduction. After absorbing the heat, the temperature of the product in the heating chamber 21 gradually rises until the required heating temperature is reached. Finally, when the product has finished heating, it can be discharged through the connecting port 14 of the outer shell 1.

[0050] Therefore, it can be seen that the heating coil 3, which is sleeved on the outer wall of the heated shell 2, generates an alternating magnetic field. The generated magnetic field can act uniformly on the heating cavity 21 inside the heated shell 2, so that the product to be heated is in a uniform magnetic field environment. At this time, due to the uniform distribution of the magnetic field, the product to be heated can generate induced eddy currents uniformly, thereby achieving uniform heating.

[0051] according to Figure 4 As shown, in some specific embodiments, the heated housing 2 includes multiple wire guide plates 22, which surround each other to form a heating cavity 21.

[0052] Specifically, multiple wire guide plates 22 surround each other to form a closed or semi-closed heating cavity 21. The internal space of the heating cavity 21 is used to accommodate the product to be heated, so that the product to be heated can be evenly surrounded inside the heated shell 2, thereby achieving a more uniform heating effect. Specifically, when an alternating current is passed through the heating coil 3, an alternating magnetic field is generated around it. This alternating magnetic field penetrates the wire guide plates 22 and enters the heating cavity 21. The alternating magnetic field induces eddy currents in the wire guide plates 22, that is, the eddy currents flow inside the plates. Under the resistance of the wire guide plates 22, the eddy currents generate Joule heat, causing the wire guide plates 22 to heat up themselves. Since the wire guide plates 22 surround to form the heating cavity 21, the heat is evenly transferred to the inner wall of the heating cavity 21 through thermal conduction, and finally transferred to the product to be heated inside the heating cavity 21.

[0053] It is understood that the shape and size of the heating cavity 21 in this embodiment of the present invention can be designed according to the product to be heated or according to actual needs, such as a circle, a square or other complex shape.

[0054] In a further embodiment, each of the through-line plates 22 is a synthetic stone plate.

[0055] Specifically, due to the excellent insulation properties of synthetic stone, the wire guide plate 22 can effectively isolate the alternating current generated by the heating coil 3, preventing current leakage into the heating cavity 21, thereby improving the safety of the device. It can also reduce electromagnetic interference, ensuring that the electromagnetic field of the heating device is concentrated inside the heated shell 2, thereby improving heating efficiency and avoiding electromagnetic interference to surrounding equipment. In addition, the wire guide plate 22 made of synthetic stone can work stably for a long time in high-temperature environments and is not easily deformed or damaged due to high temperatures, thereby improving the overall structural stability of the heated shell 2.

[0056] according to Figure 4 As shown, in a further embodiment, the end faces of both of the wire guide plates 22 are provided with a first epoxy plate 23.

[0057] Specifically, in the electromagnetic heating device, the heating coil 3 generates an alternating magnetic field, which in turn induces a current. If the wire guide plates 22 are in direct contact, it may lead to current leakage or a short circuit. By placing a first epoxy plate 23 on the end face of the wire guide plates 22, the current can be effectively isolated, preventing current conduction between the plates, thereby improving the safety of the entire electromagnetic heating device. Furthermore, the insulating properties of the first epoxy plate 23 can reduce electromagnetic interference, ensuring that the electromagnetic field is concentrated inside the heated housing 2, improving heating efficiency, and avoiding electromagnetic interference to surrounding equipment. In addition, the first epoxy plate 23 has high mechanical strength, providing additional support for the wire guide plates 22 and enhancing the stability of the overall structure. For example, in high-temperature environments, the low coefficient of thermal expansion of the first epoxy plate 23 can reduce deformation or damage to the entire structure caused by thermal expansion and contraction.

[0058] It is understood that, in this embodiment of the present invention, the two first epoxy plates 23 are respectively disposed on the top wire guide plate 22 and the bottom wire guide plate 22.

[0059] according to Figure 2 As shown, in some specific embodiments, the outer shell 1 includes an annular frame 12 and two side cover plates 13; each side cover plate 13 is symmetrically and detachably disposed on both sides of the annular frame 12; each communication port 14 is disposed on each side cover plate 13.

[0060] Specifically, the annular frame 12 is a hollow square structure with an internal mounting cavity 11 for accommodating the heated housing 2 and the heating coil 3. Two side cover plates 13 are symmetrically arranged on both sides of the annular frame 12, and are detachably fixed to the annular frame 12. This arrangement facilitates assembly, maintenance, and cleaning. For example, when it is necessary to replace internal components (such as the heated housing 2 or the heating coil 3), the side cover plates 13 can be easily removed to replace the internal components. Specifically, during assembly, the heated housing 2 and the heating coil 3 are first placed in the mounting cavity 11 of the annular frame 12, ensuring their correct position. Then, the two side cover plates 13 are symmetrically installed on both sides of the annular frame 12, fixing the two side cover plates 13 and completing the assembly. Conversely, during disassembly, the side cover plates 13 are removed from the annular frame 12, and then the heated housing 2 and the heating coil 3 can be easily removed for maintenance or replacement. As such, each side cover 13 is detachable, allowing the two sides of the housing 1 to be easily opened and closed for regular maintenance, cleaning or replacement of internal components; in addition, the side cover 13 can be used to quickly replace or upgrade internal components as needed without large-scale disassembly of the entire device.

[0061] It should be noted that the connecting port 14 on the side cover plate 13 is connected to the heating chamber 21 of the heated shell 2, ensuring that the product to be heated can smoothly enter and exit the heating chamber 21.

[0062] It is understood that the annular frame 12 of this utility model embodiment is made of metal materials, such as stainless steel, aluminum alloy, etc., which have high mechanical strength and high temperature resistance.

[0063] according to Figure 2 As shown, in a further embodiment, the annular frame 12 has multiple fixing holes 121 on both sides; each side cover plate 13 has a locking hole 131 that is connected to each fixing hole 121; the electromagnetic heating device also includes multiple locking components, each locking component being inserted into each locking hole 131 and fixing hole 121.

[0064] Specifically, the annular frame 12 has multiple fixing holes 121 on both sides, which are evenly distributed on both sides of the frame and are used to align with the locking holes 131 on the side cover plate 13. The side cover plate 13 has multiple locking holes 131, each corresponding to a fixing hole 121 on the annular frame 12. The locking holes 131 are circular or other shapes suitable for inserting locking components. During assembly, the side cover plates 13 are placed on both sides of the annular frame 12, aligning the locking holes 131 on the side cover plates 13 with the fixing holes 121 on the annular frame 12. Then, the locking components are simultaneously inserted into both the locking holes 131 and the fixing holes 121, and finally tightened to secure the locking components. This process fixes each side cover plate 13. This configuration ensures that the side cover plate 13 and the annular frame 12 fit tightly together by tightening the locking element (such as a bolt), forming an integral structure. Moreover, when the locking element is removed, the side cover plate 13 can be disassembled and removed from the annular frame 12 for maintenance or replacement of internal components.

[0065] It is understood that all fixing holes 121 in this embodiment of the present invention are threaded holes, and the locking components are all screws. The number and layout of fixing holes 121 in this embodiment of the present invention can be adjusted according to the size and strength requirements of the outer shell 1, and the specific number and layout are not limited here.

[0066] In some specific embodiments, each side cover plate 13 is a second epoxy board.

[0067] Specifically, epoxy boards have extremely high resistivity, which effectively isolates current. In the electromagnetic heating device, the internal heating coil 3 generates an alternating magnetic field, which in turn induces current. If the side cover 13 were made of metal, it might lead to current leakage or electromagnetic interference. Therefore, epoxy boards are chosen because their insulation properties effectively prevent current leakage and ensure the safety of the device. Moreover, epoxy boards have relatively low thermal conductivity, making them suitable as thermal insulation materials. Therefore, using epoxy boards for all side cover 13 reduces heat conduction from the heating cavity 21 to the outside, thereby improving heating efficiency and reducing energy waste.

[0068] according to Figure 2 As shown, in some specific embodiments, the outer shell 1 has multiple ventilation openings that are all connected to the mounting cavity 11; the mounting cavity 11 is provided with multiple detachable heat sinks 4, and the airflow of each heat sink 4 is directed toward each ventilation opening.

[0069] Specifically, multiple vents help regulate the temperature distribution within the mounting cavity 11, preventing localized overheating. Through airflow, heat is evenly distributed throughout the mounting cavity 11, improving the overall thermal stability of the device. The radiator 4 is equipped with a fan; by directing the fan towards the vents, hot air from the mounting cavity 11 is directly blown out through the vents. This active cooling method significantly improves heat dissipation efficiency. Therefore, when heating the product, the air in the mounting cavity 11 heats up and rises, exiting through the vents. Cool air enters through the vents, creating a natural convection circulation. Simultaneously, the fan in the radiator 4 accelerates the airflow, directly blowing hot air towards the vents. This convection method significantly improves heat dissipation efficiency and prevents damage to the heating coil 3 and other internal components due to overheating.

[0070] according to Figure 3 As shown, in some specific embodiments, the outer casing 1 has multiple heat dissipation ports 15 that are all connected to the mounting cavity 11.

[0071] Specifically, when the electromagnetic heating device is running, the heating coil 3 generates a large amount of heat, which causes the air temperature inside the mounting cavity 11 to rise. At this time, the hot air is discharged from the outer casing 1 through the heat dissipation port 15, and the cold air from outside will enter the mounting cavity 11 through the heat dissipation port 15 or other openings, forming a natural convection circulation. This circulation can continuously remove the heat from the mounting cavity 11, thereby reducing the internal temperature.

[0072] When the electromagnetic heating device is running, the heating coil 3 and other heat-generating components generate heat, causing the air temperature inside the mounting cavity 11 to rise. Therefore, the heat is directly dissipated from the mounting cavity 11 through the heat dissipation vent 15, preventing heat from accumulating inside.

[0073] Furthermore, the layout of the heat dissipation vents 15 can affect the temperature distribution within the mounting cavity 11. Therefore, by setting multiple heat dissipation vents 15 at different locations, airflow can be promoted, making the temperature distribution within the mounting cavity 11 more uniform and avoiding localized overheating. For example, the heat dissipation vents 15 can be distributed on the top and bottom surfaces, left and right walls of the mounting cavity 11, etc., to form vertical convection, thereby promoting air convection and uniform heat dissipation.

[0074] according to Figure 3 As shown, in some specific embodiments, each heat dissipation port 15 is provided with an airflow guide 16.

[0075] Specifically, when hot gas rises from the mounting cavity 11 and reaches each heat dissipation port 15, each airflow guide 16 guides the airflow to the outside of the heat dissipation port 15. This design allows the airflow guide 16 to guide the flow direction of the hot gas, preventing it from stagnating or flowing back near the heat dissipation port 15, thereby improving the heat dissipation capacity within the mounting cavity 11.

[0076] It is understood that the airflow guiding parts 16 in this embodiment of the present invention are all flow guides. This structure can guide hot gas along its surface to the outside of the heat dissipation port 15 to avoid the airflow from stagnating near the heat dissipation port 15. Specifically, each flow guide has a curved structure. By setting it at the heat dissipation port 15 and located outside the outer shell 1, the hot gas can be guided to the outside of the heat dissipation port 15, thereby reducing the turbulence and resistance of the airflow.

[0077] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An electromagnetic heating device, characterized in that, The electromagnetic heating device includes: The outer shell has a hollow interior forming an installation cavity, and both ends of the outer shell have through-holes. A heated housing is built into the mounting cavity; the heated housing has a heating cavity that is connected to the corresponding communication port. A heating coil is built into the mounting cavity and sleeved on the outer wall of the heated housing.

2. The electromagnetic heating device according to claim 1, characterized in that, The heated housing includes multiple wire guide plates, which surround each other to form the heating cavity.

3. The electromagnetic heating device according to claim 2, characterized in that, All the aforementioned cross-line plates are synthetic stone plates.

4. The electromagnetic heating device according to claim 2, characterized in that, The end faces of both of the aforementioned wire-passing plates are provided with a first epoxy board.

5. The electromagnetic heating device according to claim 1, characterized in that, The outer casing includes an annular frame and two side cover plates; each side cover plate is symmetrically and detachably disposed on both sides of the annular frame; each communication port is disposed on each side cover plate.

6. The electromagnetic heating device according to claim 5, characterized in that, Multiple fixing holes are provided on both sides of the annular frame; each of the side cover plates has a locking hole that is connected to each of the fixing holes respectively. The electromagnetic heating device also includes multiple locking components, each of which is inserted into a locking hole and a fixing hole.

7. The electromagnetic heating device according to claim 5, characterized in that, All of the aforementioned side cover plates are second epoxy boards.

8. The electromagnetic heating device according to claim 1, characterized in that, The outer shell has multiple ventilation openings that are all connected to the mounting cavity; The mounting cavity is equipped with multiple detachable radiators, and the airflow direction of each radiator is directed toward each of the ventilation ports.

9. The electromagnetic heating device according to claim 1, characterized in that, The outer casing has multiple heat dissipation vents that are all connected to the mounting cavity.

10. The electromagnetic heating device according to claim 9, characterized in that, Each of the aforementioned heat dissipation vents is provided with an airflow guide.

Images