Heating element and electromagnetic heating baking device

Abstract

The present invention relates to a heating element and an electromagnetic heating baking device. The heating element includes an insert portion, the insert portion being externally provided with a magnetic induction coil. The insert portion is a rotating body structure. The insert portion is inserted into an object to be baked and heats the object via the magnetic field generated by the magnetic induction coil. The electromagnetic heating baking device of the present invention utilizes a magnetic induction coil disposed externally of the insert portion. When energized, the coil generates an electromagnetic induction effect with the insert portion, causing the heating element to heat. Furthermore, by designing the insert portion as a rotating body structure, the object can be rotated after heating to separate it from the heating element, eliminating the need for a smoke removal mechanism. This results in the electromagnetic heating baking device of the present invention having high heating efficiency, a simple structure, and ease of use.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic heating devices, in particular to a heating element and an electromagnetic heating baking device. Background Art

[0002] Existing heat-not-burn tobacco products usually use resistance or electromagnetic heating methods. Regardless of whether resistance or electromagnetic heating is used, the heating structure generally uses a heating plate inserted into the cigarette or a heating tube surrounding the cigarette. The heating plate insertion structure usually inserts the cigarette into the cigarette tube from one end of the cigarette tube, and the heating plate extends into the cigarette tube from the other end and is inserted into the cigarette. Since the cigarette is easily adhered to the heating plate after heating, it is necessary to design a pushing mechanism to push the cigarette tube to separate the cigarette from the heating plate. The pushing mechanism is complex in design and easily damaged after repeated use. Since the peripheral heating of the heating tube is in contact with the cigarette outside the cigarette, adhesion usually does not occur. However, due to the long distance from the center of the cigarette, the heating effect is not good. Summary of the Invention

[0003] Based on this, it is necessary to provide a heating element and an electromagnetic heating baking device to address the problem that the heating structure of traditional electronic cigarettes is difficult to separate from the baking objects such as cigarettes or the heating effect is poor.

[0004] The electromagnetic heating baking device of the present invention includes a fixing frame, a accommodating tube and a heating element. The fixing frame is provided with a magnetic induction coil, and the coils enclose a accommodating cavity. The accommodating tube is located in the accommodating cavity and is used to accommodate baked objects. The heating element includes an insertion portion, which is a rotating body structure and is located in the accommodating tube. The insertion portion is used to be inserted into the baked object and heat the baked object through the magnetic field generated by the magnetic induction coil.

[0005] In one embodiment, the insertion portion includes a hollow tubular metal magnetic tube and a non-magnetic support column, the outer diameter of the non-magnetic support column corresponds to the inner diameter of the metal magnetic tube, and the metal magnetic tube is sleeved on the outside of the non-magnetic support column.

[0006] In one embodiment, the electromagnetic heating baking device of the present invention further includes a mounting seat, the heating element further includes a mounting portion, the mounting seat is sleeved on the outside of the mounting portion, and the mounting seat is connected to the fixing frame.

[0007] In one embodiment, a cylindrical portion is formed at the bottom end of the fixing frame, the cylindrical portion is communicated with the accommodating tube, and the cylindrical portion is used for mounting the mounting seat and the mounting portion of the heating element.

[0008] In one embodiment, the outer wall of the mounting seat is fixedly connected or detachably connected to the inner wall of the barrel.

[0009] In one embodiment, the insertion portion includes a top and a main body portion, the top and the mounting portion are respectively located at opposite ends of the heating element, the main body portion is located between the top and the main body portion, and the outer diameter of the top gradually decreases in the direction away from the main body portion.

[0010] In one embodiment, the top, the main body and the mounting portion of the heating element are non-magnetic support columns with the same diameter.

[0011] In one embodiment, the non-magnetic supporting column is made of ceramic.

[0012] In one embodiment, a main body portion is spaced between the metal magnetic tube and the mounting seat.

[0013] In one embodiment, a silicone member is provided between the mounting portion of the heating element and the fixing frame and the mounting seat.

[0014] In one embodiment, the electromagnetic heating baking device of the present invention further includes a metal tube, which is sleeved on the outside of the coil.

[0015] In one embodiment, the electromagnetic heating baking device of the present invention further includes a main housing, wherein an electrically connected circuit board and a power supply are disposed in the main housing, and the coil is electrically connected to the circuit board.

[0016] In one embodiment, the electromagnetic heating baking device of the present invention further includes a top cover, the accommodating tube is fixedly disposed inside the top cover, the top cover is sleeved on the outside of the fixing frame, and a gap is formed between the top wall of the fixing frame and the top wall of the top cover.

[0017] In one embodiment, the top cover is detachably connected to the main shell; or, the bottom end of the outer wall of the fixing frame is fixedly connected to the inner wall of the main shell, and the top cover is detachably mounted on the upper end of the outer wall of the fixing frame.

[0018] In one embodiment, the fixing frame includes a first cylinder and a second cylinder arranged coaxially, the first cylinder is sleeved on the outside of the second cylinder, a first cavity is formed between the first cylinder and the second cylinder, a second cavity is formed in the second cylinder, the coil is located in the first cavity and is wound around the second cylinder, and the accommodating tube is located in the second cavity.

[0019] The present invention also proposes a heating element, which includes an insertion part, a magnetic induction coil is provided on the outside of the insertion part, and the insertion part is a rotating body structure. The insertion part is used to be inserted into the baked object and heat the baked object through the magnetic field generated by the magnetic induction coil.

[0020] In one embodiment, the insertion portion includes a hollow tubular metal magnetic tube and a non-magnetic support column, the outer diameter of the non-magnetic support column corresponds to the inner diameter of the metal magnetic tube, and the metal magnetic tube is sleeved on the outside of the non-magnetic support column.

[0021] The heating element and electromagnetic heating baking device of the present invention have the following beneficial effects:

[0022] The heating element and electromagnetic heating baking device of the present invention are configured such that a magnetic induction coil is arranged on the outside of the insertion part. When the coil is energized, an electromagnetic induction effect is generated between the coil and the insertion part, causing the heating element to heat up. In addition, the shape of the insertion part is designed to be a rotating body structure, which can be inserted into the inside of the baked object to heat the baked object. After the baked object such as a cigarette is heated and baked, the baked object can be rotated to separate the baked object from the heating element, thereby eliminating the need for a cigarette evacuation mechanism. As a result, the electromagnetic heating baking device of the present invention has high heating efficiency, simple structure, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an electromagnetic heating baking device provided by one embodiment of the present invention.

[0024] Figure 2 A schematic diagram of the exploded structure of an electromagnetic heating baking device provided by one embodiment of the present invention.

[0025] Figure 3 A longitudinal cross-sectional view of an electromagnetic heating baking device provided by one embodiment of the present invention.

[0026] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part A.

[0027] Figure 5 A longitudinal cross-sectional view of a fixing frame in an electromagnetic heating baking device provided in one embodiment of the present invention.

[0028] Figure 6 A longitudinal cross-sectional view of the top cover and the containing tube of the electromagnetic heating baking device provided by one embodiment of the present invention after being connected.

[0029] Figure 7 A schematic diagram of the overall structure of a heating element in an electromagnetic heating baking device provided by one embodiment of the present invention.

[0030] Figure 8 A schematic diagram of the disassembled structure of a heating element in an electromagnetic heating baking device provided in one embodiment of the present invention.

[0031] Figure 9 A longitudinal cross-sectional view of a heating element in an electromagnetic heating baking device provided in one embodiment of the present invention.

[0032] Reference numerals:

[0033] Top cover 100, accommodating tube 110, second opening 111, main shell 200, fixing frame 300, first cylinder 310, second cylinder 320, first cavity 330, second cavity 340, cylinder part 350, bottom plate 360, first opening 370, metal tube 400, coil 500, heating element 600, top 610, main body 620, metal magnetic tube 621, non-magnetic support column 622, mounting part 630, mounting seat 640, silicone part 650, insertion part 660, circuit board 700 and power supply 800, baking object 900, filter 910, fiber tube 920, support tube 930, tobacco part 940. DETAILED DESCRIPTION

[0034] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] In one embodiment, the overall structure of the electromagnetic heating baking device is as follows: Figure 1 As shown, it includes a top cover 100 and a main shell 200. The top cover 100 is provided with an opening and is hollow inside. The baking object 900 is inserted into the top cover 100. Figure 2As shown, the interior of the electromagnetic heating baking device is further provided with a receiving tube 110, a fixing frame 300, a metal tube 400, a magnetic induction coil 500, a heating element 600, a circuit board 700 and a power supply 800, and the coil 500 and the power supply 800 are both connected to the circuit board 700. The longitudinal cross-sectional view of the electromagnetic heating baking device is shown in FIG. Figure 3 As shown, Figure 3 The enlarged structure of part A is as follows Figure 4 The longitudinal cross-sectional view of the fixing frame 300 is shown in FIG. Figure 5 As shown, in Figure 4 and Figure 5 As can be seen in the figure, the fixing frame 300 includes a first cylinder 310 and a second cylinder 320 arranged coaxially. The first cylinder 310 is sleeved on the outside of the second cylinder 320. The first cylinder 310 and the second cylinder 320 are connected at the top. A first cavity 330 is formed between the first cylinder 310 and the second cylinder 320. The top of the first cavity 330 is closed and the bottom is open to facilitate the metal tube 400 and the coil 500 to be inserted into the first cavity 330 from the bottom. The coil 500 is located in the first cavity 330 and is wound around the second cylinder 320. The metal tube 400 is located in the first cavity 330 and sleeved on the outside of the coil 500. In a specific embodiment, the metal tube 400 is an iron tube. The metal tube 400 is tightly sleeved on the outside of the spiral coil 500 by elastic pre-tightening force. The metal tube 400 is used to prevent the electromagnetic waves generated by the coil 500 from leaking out after being powered. In addition, it should be noted that an insulating layer is provided on the outside of the coil 500. The metal tube 400 is tightly fitted on the outside of the spiral coil 500, and does not cause the metal tube 400 and the coil 500 to be conductive. In addition, the provision of the metal tube 400 also helps to protect the insulating layer on the outside of the coil 500 from being scratched or damaged.

[0038] In addition, if Figure 4 and Figure 5 As shown, a second cavity 340 is formed in the second cylinder 320, and the top of the second cavity 340 is open, so that the receiving tube 110 can be inserted into the second cavity 340 from the top. In a specific embodiment, the receiving tube 110 is fixed in the top cover 100; or, the receiving tube 110 and the top cover 100 are integrally formed, and the longitudinal cross-sectional view of the receiving tube 110 fixed in the top cover 100 is shown in FIG. Figure 6 In addition, since the coil 500 is wound around the outside of the second cylinder 320, the accommodating cavity formed by the coil 500 is the second cavity 340 within the second cylinder 320. The accommodating tube 110 is located within the second cavity 340 and is used to accommodate the baked object 900 and the insertion portion 660 of the heating element 600.

[0039] like Figure 7 and Figure 9As shown, the heating element 600 includes an inserting portion 660 and a mounting portion 630. The inserting portion 660 is a rotating body structure and is located in the receiving tube 110. The inserting portion 660 includes a top portion 610 and a main body 620. The mounting portion 630 and the top portion 610 are respectively located at opposite ends of the heating element 600. The main body 620 is located between the top portion 610 and the mounting portion 630. The outer diameter of the top portion 610 gradually decreases in the direction away from the main body 620 to facilitate the insertion of the inserting portion 660 into the interior of the baked object 900. In addition, as shown in FIG. Figure 9 As shown, the electromagnetic heating baking device further includes a mounting seat 640, which is sleeved on the outside of the mounting portion 630 of the heating element 600 and is used to mount the heating element 600 in the fixing frame 300. Figure 5 As shown, the bottom end of the second cylinder 320 of the fixing frame 300 is formed with a coaxial cylinder portion 350 having a smaller diameter than the second cylinder portion, and a first opening 370 is formed on the bottom plate 360 between the second cylinder 320 and the cylinder portion 350. Figure 6 As shown, the bottom of the accommodating tube 110 is provided with a second opening 111, and the positions of the first opening 370 and the second opening 111 correspond to each other, so as to facilitate the connection between the barrel 350 and the accommodating tube 110. Figure 4 As shown, the barrel 350 is used to install the mounting seat 640 and the mounting portion 630 of the heating element 600. The insertion portion 660 of the heating element 600 passes through the barrel 350 and is inserted into the accommodating tube 110, and the top 610 of the insertion portion 660 is in a sharp cone shape. When the baked object 900 such as a cigarette is inserted into the accommodating tube 110, the sharp top 610 facilitates the insertion of the insertion portion 660 into the inside of the baked object 900, thereby facilitating the heating of the baked object 900. In addition, since the insertion portion 660 of the heating element 600 is a rotating body structure, after the baked object 900 such as a cigarette is heated and baked, the baked object 900 can be rotated to separate the baked object 900 from the heating element 600, thereby eliminating the need for a smoke removal mechanism. The structure of the heating element 600 is shown in FIG. Figure 7 、 Figure 8 and Figure 9As shown, the insertion portion 660 includes a hollow tubular metal magnetic tube 621 and a non-magnetic support column 622. The outer diameter of the non-magnetic support column 622 corresponds to the inner diameter of the metal magnetic tube 621, and the metal magnetic tube 621 is sleeved on the outside of the non-magnetic support column 622. When the coil 500 is energized, an alternating magnetic field is formed inside the container tube 110. The metal magnetic tube 621 generates eddy currents by cutting the alternating magnetic field lines. The eddy currents cause the electrons inside the metal magnetic tube 621 to move at high speed and irregularly, and collide and rub against each other to generate heat energy, thereby achieving a heating effect. In a specific embodiment, the heating temperature of the heating element 600 can be controlled by controlling the current intensity and power-on time in the coil 500. In a specific embodiment, the non-magnetic support column can be a ceramic support column, a glass support column, or a high-temperature resistant plastic support column. When the non-magnetic support column is a ceramic support column, before the ceramic support column is sintered, the metal magnetic tube 621 is placed on the outside of the ceramic support column, and then the metal magnetic tube 621 and the ceramic support column are sintered together to form the column. This can improve the bonding strength between the metal magnetic tube 621 and the ceramic support column. In addition, the ceramic support column dissipates heat more slowly, making full use of the heat generated by the metal magnetic tube 621. In addition, the ceramic support column is easy to form and has high strength.

[0040] In a specific embodiment, Figure 7-Figure 9 As shown, the top 610, main body 620, and mounting portion 630 of the heating element 600 are an integrally formed ceramic support column structure, wherein the top 610 and main body 620 are both rotational structures. More specifically, the top 610 is a conical structure, the main body 620 is a cylindrical structure, and the diameter of the top 610 near the main body 620 is consistent with the diameter of the main body 620, while the mounting portion 630 is a non-rotational structure. It is understood that in other embodiments, the main body 620 and the mounting portion 630 can also be cylindrical structures of different diameters, with the top 610 being a conical structure; or the main body 620 and the mounting portion 630 can be cylindrical structures of the same diameter, with the top 610 being a pointed structure, and the diameter of the top 610 near the main body 620 is consistent with the diameter of the main body 620.

[0041] In addition, if Figure 4 As shown, the top cover 100 is sleeved on the outside of the fixing frame 300, and a gap is formed between the top wall of the fixing frame 300 and the top wall of the top cover 100 for heat insulation to prevent the top cover 100 from being overheated. Figure 4As shown, the outer diameter of the top cover 100 is the same as the outer diameter of the main housing 200. The top cover 100 abuts the main housing 200. The bottom end of the outer wall of the first cylindrical body 310 of the fixing frame 300 is fixedly connected to the inner wall of the main housing 200. The top cover 100 is detachably mounted on the upper end of the outer wall of the first cylindrical body 310 of the fixing frame 300. The method of detachment is not limited. In a specific embodiment, the top cover 100 can be detachably mounted on the upper end of the outer wall of the first cylindrical body 310 of the fixing frame 300 by means of an up and down sliding structure, a snap-fit structure, or a threaded structure. In addition, in other embodiments, the top cover 100 can also be mounted on the outside of the main housing 200 or inserted into the inside of the main housing 200. The top cover 100 is detachably connected to the main housing 200 by means of an up and down sliding structure, a snap-fit structure, or a threaded structure. The detachable configuration of the top cover 100 facilitates cleaning of the accommodating tube 110 inside the top cover 100.

[0042] In addition, when a baked object 900, such as a cigarette, is inserted into the receiving tube 110, a downward force is applied to the heating element 600. To prevent the heating element 600 from detaching from the fixing frame 300, the outer wall of the mounting seat 640 is fixedly connected or detachably connected to the inner wall of the barrel portion 350 of the fixing frame 300. The method of fixed connection is not limited. In a specific embodiment, the outer wall of the mounting seat 640 and the inner wall of the barrel portion 350 of the fixing frame 300 can be fixedly connected by adhesive, or the outer wall of the mounting seat 640 and the inner wall of the barrel portion 350 of the fixing frame 300 can be fixedly connected by interference fit. The method of detachable connection is also not limited. In a specific embodiment, the outer wall of the mounting seat 640 and the inner wall of the barrel portion 350 of the fixing frame 300 are connected by a snap-fit method or a threaded method. In the electromagnetic heating baking device of the present invention, the heating element 600 generates heat by cutting alternating magnetic field lines. The heating element 600 does not include a heating circuit. Compared to conventional resistive heating elements, the heating element 600 in the electromagnetic heating baking device of the present invention has a simpler structure, a longer service life, and does not require frequent replacement. Therefore, the outer wall of the mounting base 640 can be fixedly connected to the inner wall of the cylindrical portion 350 of the fixing frame 300, thereby firmly connecting the heating element 600 to the fixing frame 300. This prevents the heating element 600 from separating from the fixing frame 300 when the baking object 900, such as a cigarette, is inserted into the receiving tube 110. It will be appreciated that in some embodiments, the outer wall of the mounting base 640 can be removably connected to the inner wall of the cylindrical portion 350 of the fixing frame 300, thereby allowing the heating element 600 to be removably connected to the fixing frame 300. This arrangement not only prevents the heating element 600 from separating from the fixing frame 300, but also facilitates replacement of the heating element 600.

[0043] In addition, if Figure 9As shown, a gap is formed between the metal magnetic tube 621 and the mounting base 640, which can effectively insulate heat, that is, prevent heat from being transferred to the mounting base 640. The mounting base 640 is close to the electronic components, thereby preventing heat from being transferred to the electronic components. Figure 4 and Figure 9 As shown, a silicone member 650 is provided between the mounting portion 630 of the heating member 600 and the fixing frame 300. The silicone member 650 can withstand high temperatures above 200°C. The provision of the silicone member 650 makes the connection between the heating member 600 and the fixing frame 300 more stable and reliable. The silicone member 650 can prevent the liquid formed after the baking objects 900 such as cigarettes are heated from flowing down into the baking device.

[0044] In one embodiment, the assembly process of the electromagnetic heating baking device is as follows: first, the metal tube 400 is placed on the outside of the coil 500, and then the metal tube 400 and the coil 500 are inserted into the first cavity 330 of the fixing frame 300 from the bottom end of the fixing frame 300, and the heating element 600 is inserted and installed in the second cavity 340 inside the fixing frame 300 through the barrel 350 at the bottom end of the fixing frame 300; then the circuit board 700 and the power supply 800 electrically connected to the coil 500 are both placed in the main housing 200. The bottom end of the outer wall of the first cylinder 310 of the fixing frame 300 is fixedly connected to the inner wall of the main shell 200 by means of a snap connection or other connection method; finally, the top cover 100 is detachably mounted on the upper end of the outer wall of the first cylinder 310 of the fixing frame 300, with the bottom surface of the top cover corresponding to the upper end surface of the main shell. At the same time, the receiving tube 110 inside the top cover 100 is inserted into the second cavity 340 of the fixing frame 300 (the top cover and the receiving tube can be snap-connected), and the insertion portion 660 of the heating element 600 is located in the receiving tube 110. When a baked object 900 such as a cigarette is inserted into the receiving tube 110, the heating element insertion portion 660 can be inserted into the baked object, thereby facilitating heating of the baked object 900. In other embodiments, the receiving tube and the top cover can be integrally formed.

[0045] In addition, Figure 4 In the illustrated embodiment, the baked object 900 is a cigarette, which comprises, from top to bottom, a filter 910, a fiber tube 920, a support tube 930, and a tobacco portion 940. The tobacco portion 940 comprises a pleated bundle of fallen leaf tobacco. When the cigarette is inserted into the receiving tube 110, the heating element 600 can be inserted into the tobacco portion 940 to heat the tobacco portion 940. The hollow support tube 930 is used to separate the tobacco portion 940 from the fiber tube 920. When the heating element 600 is inserted into the tobacco portion 940, the hollow support tube 930 can prevent the tobacco portion 940 from being pushed into the fiber tube 920. The fiber tube 920 has multiple channels extending along its length. The filter 910 is a conventional filter 910 formed of cellulose acetate.

[0046] The heating element and electromagnetic heating baking device of the present invention are configured such that a magnetic induction coil 500 is arranged on the outside of the insertion portion 660. When the coil 500 is energized, an electromagnetic induction effect is generated between the coil 500 and the insertion portion 660, causing the heating element 600 to heat up. In addition, the present invention also designs the shape of the insertion portion 660 to be a rotating body structure. The insertion portion 660 can be inserted into the interior of the baking object and thus heat the baking object 900. After the baking object 900 such as a cigarette is heated and baked, the baking object 900 can be rotated to separate the baking object 900 from the heating element 600, thereby eliminating the need for a smoke-removing mechanism. This makes the electromagnetic heating baking device of the present invention have high heating efficiency, simple structure, and easy use.

[0047] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. An electromagnetic heating baking device, characterized in that: include: A fixing frame, wherein a magnetic induction coil is provided on the fixing frame, and the magnetic induction coil encloses a receiving cavity; a receiving tube, located in the receiving cavity, and used for receiving baked goods; and The heating element includes an insertion portion, which is a rotating body structure and is located in the receiving tube. The insertion portion is used to be inserted into the baked object and heat the baked object through the magnetic field generated by the magnetic induction coil; the insertion portion includes a hollow tubular metal magnetic conductive tube and a non-magnetic conductive support column, the outer diameter of the non-magnetic conductive support column corresponds to the inner diameter of the metal magnetic conductive tube, and the metal magnetic conductive tube is sleeved on the outside of the non-magnetic conductive support column; The electromagnetic heating baking device further includes a mounting seat, the heating element further includes a mounting portion, the mounting seat is sleeved on the outside of the mounting portion, the mounting seat is connected to the fixing frame, and a main body portion is separated from the metal magnetic tube and the mounting seat; The electromagnetic heating baking device further comprises a main shell, wherein an electrically connected circuit board and a power supply are arranged in the main shell, and the magnetic induction coil is electrically connected to the circuit board.

2. The electromagnetic heating baking device according to claim 1, characterized in that: A cylindrical portion is formed at the bottom end of the fixing frame, which is communicated with the accommodating tube and is used to install the mounting seat and the mounting portion of the heating element. The outer wall of the mounting seat is fixedly connected or detachably connected to the inner wall of the cylindrical portion.

3. The electromagnetic heating baking device according to claim 1, characterized in that: The inserting portion includes a top portion and a main body portion. The top portion and the mounting portion are respectively located at opposite ends of the heating element. The main body portion is located between the top portion and the main body portion. The outer diameter of the top portion gradually decreases in a direction away from the main body portion.

4. The electromagnetic heating baking device according to claim 3, characterized in that: The top, main body and mounting portion of the heating element are non-magnetic support columns with the same diameter.

5. The electromagnetic heating baking device according to claim 1 or 4, characterized in that: The non-magnetic supporting column is made of ceramic.

6. The electromagnetic heating baking device according to claim 1, characterized in that: A silicone piece is provided between the mounting portion of the heating element and the fixing frame and the mounting seat.

7. The electromagnetic heating baking device according to claim 1, characterized in that: It also includes a metal tube which is sleeved on the outside of the magnetic induction coil.

8. The electromagnetic heating baking device according to claim 7, characterized in that: It also includes a top cover, the accommodating tube is fixedly arranged inside the top cover, the top cover is sleeved on the outside of the fixing frame, and a gap is formed between the top wall of the fixing frame and the top wall of the top cover.

9. The electromagnetic heating baking device according to claim 8, characterized in that: The top cover is detachably connected to the main shell; or, the bottom end of the outer wall of the fixing frame is fixedly connected to the inner wall of the main shell, and the top cover is detachably sleeved on the upper end of the outer wall of the fixing frame.

10. The electromagnetic heating baking device according to claim 1, characterized in that: The fixing frame includes a first cylinder and a second cylinder arranged coaxially, the first cylinder is sleeved on the outside of the second cylinder, a first cavity is formed between the first cylinder and the second cylinder, a second cavity is formed in the second cylinder, the magnetic induction coil is located in the first cavity and is wound around the second cylinder, and the accommodating tube is located in the second cavity.

11. A heating element, characterized in that: The heating element includes an insertion portion, the exterior of which is provided with a magnetic induction coil. The insertion portion is a rotating body structure and is used to be inserted into the interior of the baked object and heat the baked object through the magnetic field generated by the magnetic induction coil. The insertion portion includes a hollow tubular metal magnetic conductive tube and a non-magnetic conductive support column, the outer diameter of the non-magnetic conductive support column corresponds to the inner diameter of the metal magnetic conductive tube, and the metal magnetic conductive tube is sleeved on the exterior of the non-magnetic conductive support column. The heating element is provided in an electromagnetic heating baking device, which further comprises a main shell. An electrically connected circuit board and a power supply are provided in the main shell, and the magnetic induction coil is electrically connected to the circuit board.

12. The heating element according to claim 11, characterized in that The heating element also includes a mounting portion, and the insertion portion includes a top and a main body portion. The top and the mounting portion are respectively located at opposite ends of the heating element, and the main body portion is located between the top and the main body portion. The top, the main body portion and the mounting portion of the heating element are non-magnetic support columns with the same diameter.

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