An electric heating furnace

Abstract

This invention relates to an electric furnace, comprising a furnace body, a magnetic heating plate, a connecting bracket disposed within the furnace body, and a coil assembly fixed to the bottom of the connecting bracket. The magnetic heating plate is fixed to the top of the connecting bracket, and the distance between the magnetic heating plate and the coil assembly is constant. The coil assembly, connecting bracket, and magnetic heating plate are encapsulated together to form a heating module. Fixing the magnetic heating plate, connecting bracket, and coil assembly together ensures a constant distance between the magnetic heating plate and the coil assembly, improving the stability of the magnetic field acting on the magnetic heating plate during operation. This guarantees the heating effect of the electric furnace while reducing energy loss. The coil assembly, connecting bracket, and magnetic heating plate, after assembly, form an integrated heating module, reducing the number of components required for overall furnace installation, lowering production costs. Furthermore, the assembly process is simple, production efficiency is high, and daily disassembly and maintenance are convenient, making it highly practical.

Description

Technical Field

[0001] This invention relates to an electric furnace. Background Technology

[0002] Chinese Patent Document No. CN2789641Y, published on June 21, 2006, discloses a heat-conducting device for an induction cooker. This device, mounted on an induction cooker, includes a main heating plate and a heat-conducting plate. The main heating plate is a ferromagnetic metal plate mounted above the induction cooker. The heat-conducting plate, made of a good conductor of heat, is attached to the top surface of the main heating plate. The device further includes a secondary heating plate attached to the top surface of the heat-conducting plate and an insulating pad attached to the bottom surface of the main heating plate. Reportedly, this heat-conducting device changes the current practice of induction cookers directly heating ferromagnetic metal cookware. Instead, the induction cooker first heats the heat-conducting plate via the main and secondary heating plates, and then the heat-conducting plate heats the cookware placed on it. This allows for the use of cookware made of various materials, overcoming the limitation of current induction cookers requiring ferromagnetic metal cookware.

[0003] However, the following drawbacks still exist:

[0004] (1) The overall components are numerous, resulting in high production costs for induction cookers. At the same time, the heat insulation shell, heat conduction plate, main heating plate, auxiliary heating plate, and heat insulation pad are all independent components. During production and assembly, these components need to be assembled one by one, resulting in low production efficiency.

[0005] (2) When individual components are damaged, multiple components need to be disassembled one by one to complete the repair, which is not conducive to daily maintenance;

[0006] (3) In addition, during the production and assembly of the product, there are many components and the assembly error between them is relatively large. This results in the distance between the induction cooker coil and the main and auxiliary heating plates being inconsistent, which reduces the stability of the magnetic field of the induction cooker coil acting on the main and auxiliary heating plates and directly affects the stability of the induction cooker during heating.

[0007] (4) The heat-conducting plate and substrate retained in this technical solution serve the functions of heat insulation and support, but do not serve the function of heat transfer. Therefore, the heat of the main heating plate needs to pass through the substrate to be transferred to the secondary heating plate, resulting in a significant reduction in the thermal efficiency of the product.

[0008] Therefore, further improvements are necessary. Summary of the Invention

[0009] The purpose of this invention is to provide an electric furnace that overcomes the shortcomings of the prior art.

[0010] An electric furnace designed for this purpose includes a furnace body, a connecting bracket disposed within the furnace body, and a coil assembly fixedly disposed at the bottom of the connecting bracket, and also includes a magnetic heating plate.

[0011] The magnetic heating plate is fixedly mounted on the top of the connecting bracket.

[0012] The distance between the magnetic heating plate and the coil assembly is constant.

[0013] The coil assembly, the connecting bracket, and the magnetic heating plate are encapsulated together to form a heating module.

[0014] The magnetic heating plate is fixed to the top of the connecting bracket by welding, pasting, snapping, or fasteners.

[0015] The connecting bracket is provided with a receiving part; the magnetic heating plate is fixedly supported on the receiving part and forms a constant magnetic field distance with the coil assembly.

[0016] The magnetic field spacing is open at the periphery, and a heat insulation component is installed inside.

[0017] The magnetic field spacing is enclosed to form a constant-distance cavity between the magnetic heating plate and the connecting bracket. The constant-distance cavity is provided with a heat insulation component or a heat dissipation channel.

[0018] The connecting bracket has a surrounding edge on its outer side, with an opening at the upper end of the surrounding edge; the receiving part is recessed at the top of the surrounding edge; and the magnetic heating plate has side wings around its periphery.

[0019] The magnetic heating plate is placed over the opening and supported on the receiving part by the side wings. The side wings and the receiving part are fixedly connected to each other by welding, pasting, snapping, or fasteners.

[0020] The receiving part is provided with a buckle part; the side wing is provided with a buckle engagement part, and is fastened to the buckle part by the buckle engagement part.

[0021] A heat insulation sheet is also provided on the side wing; the heat insulation sheet is provided with a positioning part and a clearance part; the heat insulation sheet is positioned on the side wing by the positioning part; the snap-fit ​​part passes through the clearance part and the snap-fit ​​mating part and then snaps onto the heat insulation sheet.

[0022] A temperature sensing device is provided within or outside the projection area of ​​the connecting bracket.

[0023] The bottom or edge of the connecting bracket is provided with an assembly part; the temperature sensing device is provided on the assembly part.

[0024] The sensing end of the temperature sensing device is either in contact with or has a gap fit with the bottom of the magnetic heating plate; or, the magnetic heating plate is provided with a through hole, the temperature sensing device is located on the through hole, and the sensing end of the temperature sensing device is higher than, lower than, or flush with the surface of the magnetic heating plate.

[0025] The coil assembly includes a coil and a magnetic strip; the coil is disposed at the bottom of the connecting bracket; the magnetic strip is located at the bottom of the coil and is fixedly connected to the connecting bracket by adhesive, snap-fit, or fasteners to achieve a fixed connection between the coil, the magnetic strip, and the connecting bracket.

[0026] The furnace body includes a front shell and a base.

[0027] The faceplate and the base are fixedly connected to each other by welding, gluing, snapping, or fasteners, forming an assembly cavity between them; the heating module is disposed in the assembly cavity and is fixedly connected to the faceplate and / or the base by welding, gluing, snapping, or fasteners.

[0028] The shell has a notch to expose the magnetic heating plate.

[0029] The magnetic heating plate has a boss on top; the bottom of the shell also has a slot and a shell fixing part; the side wall of the connecting bracket also has a second fixing part.

[0030] The slot is equipped with a sealing element.

[0031] The faceplate is sealed on the boss by a sealing element and fixed to the second fixing part of the connecting bracket by the faceplate fixing part.

[0032] The furnace body is also equipped with a temperature sensing device. The sensing end of the temperature sensing device is located on the connecting bracket and detects the temperature on the connecting bracket. Alternatively, the sensing end of the temperature sensing device is located between the connecting bracket and the magnetic heating plate and detects the temperature between the connecting bracket and the magnetic heating plate.

[0033] This invention, through structural improvements, fixes the coil assembly to the bottom of the connecting bracket, and then fixes the magnetic heating plate to the top of the connecting bracket, ensuring a constant distance between the magnetic heating plate and the coil assembly. This feature improves the stability of the magnetic field acting on the magnetic heating plate during operation, ensuring the heating effect of the electric furnace while reducing energy loss. Furthermore, the coil assembly, connecting bracket, and magnetic heating plate, after assembly, can form an integrated heating module, reducing the number of components during overall furnace installation and lowering production costs. The packaged heating module can be assembled as a whole onto the furnace body, with a simple assembly process and high production efficiency. If the heating module is damaged, overall maintenance can be performed, reducing after-sales maintenance pressure and making it highly practical. Attached Figure Description

[0034] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the assembly structure of the first embodiment of the present invention.

[0037] Figure 2 This is an exploded structural diagram of the first embodiment of the present invention.

[0038] Figure 3 This is an exploded structural diagram from another perspective of the first embodiment of the present invention.

[0039] Figure 4 This is a schematic diagram of the assembly cross-sectional structure of the first embodiment of the present invention.

[0040] Figure 5 This is an exploded structural diagram of the heating module according to the first embodiment of the present invention.

[0041] Figure 6 This is an exploded view of the heating module of the first embodiment of the present invention.

[0042] Figure 7 Figure 4 A magnified structural diagram at point A in the diagram.

[0043] Figure 8 This is an exploded structural diagram of the heating module according to the second embodiment of the present invention.

[0044] Figure 9 This is an exploded view of the heating module of the second embodiment of the present invention.

[0045] Figure 10 This is a cross-sectional view of the heating module assembly according to the second embodiment of the present invention.

[0046] Figure 11 for Figure 10 A magnified structural diagram at point B in the diagram.

[0047] Figure 12 This is an exploded structural diagram of the heating module according to the third embodiment of the present invention.

[0048] Figure 13 This is an exploded view of the heating module according to the third embodiment of the present invention.

[0049] Figure 14 This is a schematic cross-sectional view of the heating module assembly according to the third embodiment of the present invention.

[0050] Figure 15 for Figure 14 A magnified structural diagram at point C in the diagram. Detailed Implementation

[0051] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0052] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0053] First Embodiment

[0054] See Figures 1-7 This electric furnace includes a furnace body, a connecting bracket 3 disposed within the furnace body, and a coil assembly fixedly disposed at the bottom of the connecting bracket 3, and also includes a magnetic heating plate 4.

[0055] The magnetic heating plate 4 is fixedly mounted on the top of the connecting bracket 3.

[0056] The distance between the magnetic heating plate 4 and the coil assembly is constant.

[0057] The coil assembly, connecting bracket 3, and magnetic heating plate 4 are encapsulated together to form a heating module.

[0058] In this embodiment, the coil assembly is fixed to the bottom of the connecting bracket 3, and then the magnetic heating plate 4 is fixed to the top of the connecting bracket 3 to keep the distance between the magnetic heating plate 4 and the coil assembly constant. This feature can improve the stability of the magnetic field acting on the magnetic heating plate 4 when the coil assembly is working, ensuring the heating effect of the electric furnace while reducing energy loss. Moreover, the coil assembly, connecting bracket 3, and magnetic heating plate 4 can form an integrated heating module after assembly, which reduces the number of components when the electric furnace is installed as a whole, reducing production costs. The packaged heating module can also be assembled as a whole on the electric furnace. Its assembly process is simple and has high production efficiency. If the heating module is damaged, it can also be maintained as a whole, reducing after-sales maintenance pressure and making it highly practical.

[0059] The magnetic heating plate 4 is fixedly mounted on the top of the connecting bracket 3 by welding, pasting, snapping, or fasteners.

[0060] Specifically, the connecting bracket 3 is provided with a receiving part 9; the magnetic heating plate 4 is fixedly supported on the receiving part 9 and forms a constant magnetic field distance with the coil assembly.

[0061] The magnetic field spacing is open at the periphery, and a heat insulation component 5 is installed inside.

[0062] The magnetic field spacing is enclosed to form a constant-distance cavity between the magnetic heating plate 4 and the connecting bracket 3. The constant-distance cavity is equipped with a heat insulation component 5 or a heat dissipation channel.

[0063] The heat insulation component 5 can partially isolate the heat inside the cavity; the air duct heat dissipation channel can dissipate the heat inside the cavity.

[0064] The connecting bracket 3 has an upwardly extending rim 8, with an opening at the top of the rim 8; the receiving part 9 is recessed at the top of the rim 8; and the magnetic heating plate 4 has a side wing 10 around its periphery.

[0065] The magnetic heating plate 4 is placed over the opening and supported on the receiving part 9 by the side wing 10. The side wing 10 and the receiving part 9 are fixedly connected to each other by welding, pasting, snapping, or fasteners.

[0066] A temperature sensing device 6 is installed within or outside the projection area of ​​the connecting bracket 3.

[0067] An assembly part 7 is provided at the bottom or around the edge 8 of the connecting bracket 3; a temperature sensing device 6 is provided on the assembly part 7.

[0068] The sensing end of the temperature sensing device 6 is either in contact with or has a gap fit with the bottom of the magnetic heating plate 4.

[0069] Specifically, a heat insulation component 5 is provided inside the cavity, and an assembly part 7 is provided at the bottom; the heat insulation component 5 is provided with a through hole 30, and the through hole 30 is provided corresponding to the assembly part 7.

[0070] The temperature sensing device 6 is mounted on the assembly part 7, and its probe end passes through the through hole 30 and is mutually dependent or gap-fitted with the bottom of the magnetic heating plate 4.

[0071] That is, the temperature sensing device 6 is set in the projection area of ​​the connecting bracket 3, and the sensing end of the temperature sensing device 6 and the magnetic heating plate 4 rely on each other to accurately detect the temperature of the magnetic heating plate 4.

[0072] In addition, the magnetic heating plate 4 is provided with a through hole; the temperature sensing device 6 is provided on the assembly part 7, and its probe end passes through the through hole 30 and is located on the through hole, wherein the probe end of the temperature sensing device 6 is higher than, lower than, or flush with the surface of the magnetic heating plate 4.

[0073] That is, the temperature sensing device 6 is set in the projection area of ​​the connecting bracket 3. At the same time, the sensing end of the temperature sensing device 6 is exposed in the through hole 30 and the through hole, which can detect the temperature of the magnetic heating plate 4 and the pot body placed on the magnetic heating plate 4.

[0074] The coil assembly includes a coil 1 and a magnetic strip 2; the coil 1 is located at the bottom of the connecting bracket 3; the magnetic strip 2 is located at the bottom of the coil 1 and is fixedly connected to the connecting bracket 3 by adhesive, snap-fit ​​or fasteners to achieve a fixed connection between the coil 1, the magnetic strip 2 and the connecting bracket 3.

[0075] Specifically, coil 1 is fixedly wound on the coil groove at the bottom of connecting bracket 3, or coil 1 is fixedly wound on an intermediate component and then fixed to the bottom of connecting bracket 3 through the intermediate component. Magnetic strip 2 is located at the bottom of coil 1 and is provided with several mounting parts 18. Mounting parts 18 are provided with mounting holes 19. The bottom of connecting bracket 3 is provided with a perforated protrusion 17 corresponding to the mounting holes 19. The mounting holes 19 and the perforated protrusion 17 are fixed together by fasteners, so that coil 1, magnetic strip 2 and connecting bracket 3 are fixed together.

[0076] The furnace body includes a front shell 20 and a base 21.

[0077] The faceplate 20 and the base 21 are fixedly connected to each other by welding, gluing, snapping or fastening, and an assembly cavity is formed between them; the heating module is set in the assembly cavity and is fixedly connected to the faceplate 20 and / or the base 21 by welding, gluing, snapping or fastening.

[0078] Specifically, a notch 23 is provided on the faceplate 20; at least part of the surface of the magnetic heating plate 4 exposes the notch 23.

[0079] The top of the magnetic heating plate 4 is provided with a boss 22; the bottom of the shell 20 is also provided with a slot 24 and a shell fixing part 25; the side wall of the connecting bracket 3 is also provided with a second fixing part 26 of the connecting bracket.

[0080] A seal 27 is provided on the card slot 24.

[0081] The faceplate 20 is sealed to the boss 22 by the sealing member 27 and fixed to the second fixing part 26 of the connecting bracket by the faceplate fixing part 25.

[0082] In order to detect the temperature on the connecting bracket 3 or the temperature between the connecting bracket 3 and the magnetic heating plate 4, a temperature detection device is also provided on the furnace body; the temperature detection end of the temperature detection device is located on the connecting bracket 3 and detects the temperature on the connecting bracket 3, or the temperature detection end of the temperature detection device is located between the connecting bracket 3 and the magnetic heating plate 4 and detects the temperature between the connecting bracket 3 and the magnetic heating plate 4.

[0083] Second Embodiment

[0084] See Figures 8-11 The electric furnace differs from the first embodiment in that the side wing 10 and the receiving part 9 are fixedly connected to each other by a snap fastener.

[0085] Specifically, the receiving part 9 is provided with a snap-fit ​​part 11; the side wing 10 is provided with a snap-fit ​​engagement part 12, and the snap-fit ​​engagement part 12 engages with the snap-fit ​​part 11.

[0086] Other undescribed parts are the same as in the first embodiment.

[0087] Third Embodiment

[0088] See Figures 12-15 The electric furnace differs from the first embodiment in that the side wing 10 and the receiving part 9 are fixedly connected to each other by a snap fastener.

[0089] Specifically, the receiving part 9 is provided with a snap-fit ​​part 11; the side wing 10 is provided with a snap-fit ​​engagement part 12, and the snap-fit ​​engagement part 12 engages with the snap-fit ​​part 11.

[0090] More specifically, a heat insulation sheet 13 is also provided on the side wing 10; the heat insulation sheet 13 is provided with a positioning part 14 and a clearance part 15; the heat insulation sheet 13 is positioned on the side wing 10 by the positioning part 14; the snap-fit ​​part 11 passes through the clearance part 15 and the snap-fit ​​mating part 12 and then snaps onto the heat insulation sheet 13.

[0091] Other undescribed parts are the same as in the first embodiment.

[0092] The above describes the preferred embodiments of the present invention, illustrating and describing the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as defined by the appended claims and their equivalents.

Claims

1. An electric heating furnace comprising a furnace body, a connecting support (3) arranged in the furnace body, and a coil assembly fixedly arranged at the bottom of the connecting support (3), characterized in that: Also include the magnetic heating plate (4); The magnetic heating plate (4) is fixedly arranged on the top of the connecting bracket (3); The distance between the magnetic heating plate (4) and the coil assembly is constant. The coil assembly, the connecting bracket (3) and the magnetic heating plate (4) are packaged into a heating module. The connecting bracket (3) is provided with a receiving part (9); the connecting bracket (3) is extended upwardly with a surrounding edge (8), and the upper end of the surrounding edge (8) is formed with an opening; the receiving part (9) is recessed on the top of the surrounding edge (8); the magnetic heating plate (4) is provided with a side wing (10) on the periphery; the magnetic heating plate (4) is arranged on the opening and supported on the receiving part (9) through the side wing (10), and the side wing (10) and the receiving part (9) are fixedly connected with each other by welding, pasting, buckling or fasteners. The receiving part (9) is provided with a buckling part (11); the side wing (10) is provided with a buckling matching part (12) and buckled on the buckling part (11) through the buckling matching part (12); The side wing (10) is further provided with a heat insulation sheet (13); the heat insulation sheet (13) is provided with a positioning part (14) and an avoiding part (15); the heat insulation sheet (13) is positioned on the side wing (10) through the positioning part (14); the buckling part (11) passes through the avoiding part (15) and the buckling matching part (12) and is buckled on the heat insulation sheet (13); The furnace body comprises a surface shell (20); the top of the magnetic heating plate (4) is provided with a boss (22); the bottom of the surface shell (20) is further provided with a clamping groove (24) and a surface shell fixing part (25); the side wall of the connecting bracket (3) is further provided with a connecting bracket second fixing part (26); the clamping groove (24) is provided with a sealing element (27); the surface shell (20) is sealed on the boss (22) through the sealing effect of the sealing element (27) and is fixed on the connecting bracket second fixing part (26) through the surface shell fixing part (25).

2. The electrically heated furnace of claim 1, wherein: The magnetic heating plate (4) is fixedly arranged on the top of the connecting bracket (3) by welding, pasting, buckling or fasteners.

3. The electrically heated furnace of claim 1, wherein: The magnetic heating plate (4) is fixedly supported on the receiving part (9) and forms a constant magnetic field spacing between the coil assembly.

4. The electrically heated furnace of claim 3, wherein: The periphery of the magnetic field spacing is arranged in an open manner, and a heat insulation element (5) is arranged inside.

5. The electrically heated furnace of claim 3, wherein: The periphery of the magnetic field spacing is arranged in a shielding manner, so as to form a constant distance cavity between the magnetic heating plate (4) and the connecting bracket (3), and a heat insulation element (5) or a wind guiding and heat dissipation channel is arranged inside the constant distance cavity.

6. The electrically heated furnace of claim 1 wherein: A temperature sensing device (6) is arranged in the projection area of the connecting bracket (3) or outside the projection area.

7. The electrically heated furnace of claim 6, wherein: The bottom or the surrounding edge (8) of the connecting bracket (3) is provided with an assembly part (7); the temperature sensing device (6) is arranged on the assembly part (7); The detection end of the temperature sensing device (6) is in contact with or has a gap with the bottom of the magnetic conductive heating plate (4); or, the magnetic conductive heating plate (4) is provided with a through hole, and the temperature sensing device (6) is located on the through hole, and the detection end of the temperature sensing device (6) is higher than, lower than, or flush with the surface of the magnetic conductive heating plate (4).

8. The electrically heated furnace of claim 1 wherein: The coil assembly comprises a coil (1) and a magnetic strip (2); the coil (1) is arranged at the bottom of the connecting support (3); the magnetic strip (2) is located at the bottom of the coil (1) and is fixedly connected with the connecting support (3) by pasting, buckling, or fasteners, so as to realize the fixed connection among the coil (1), the magnetic strip (2), and the connecting support (3).

9. The electrically heated furnace of claim 1 wherein: The furnace body further comprises a base (21); The face shell (20) and the base (21) are fixedly connected with each other by welding, pasting, buckling, or fasteners, and an assembly cavity is formed between the face shell (20) and the base (21); the heating module is arranged in the assembly cavity and is fixedly connected with the face shell (20) and / or the base (21) by welding, pasting, buckling, or fasteners.

10. The electrically heated furnace of claim 9, wherein: The face shell (20) is provided with a notch (23) for exposing the magnetic conductive heating plate (4).

11. The electrically heated furnace of claim 1 wherein: The furnace body is further provided with a temperature sensing device, and the temperature sensing end of the temperature sensing device is located on the connecting support (3) and detects the temperature of the connecting support (3), or the temperature sensing end of the temperature sensing device is located between the connecting support (3) and the magnetic conductive heating plate (4) and detects the temperature between the connecting support (3) and the magnetic conductive heating plate (4).

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