Electromagnetic coil panel and electromagnetic heating device

Abstract

The utility model discloses an electromagnetic coil panel and an electromagnetic heating device, belongs to the field of electromagnetic heating devices, solves the problems that the assembly process of the electromagnetic coil panel is more complicated and the assembly efficiency is lower, and adopts the technical scheme that the electromagnetic coil panel mainly comprises a coil bracket, a coil and a magnetizer, the magnetizer comprises magnetic strips and magnetic blocks, a plurality of magnetic strip grooves for mounting the magnetic strips are radially distributed at the bottom of the coil support, the coil support is provided with accommodating grooves for mounting the magnetic blocks, notches of the accommodating grooves face the bottom of the coil support, and the magnetic strips are fixed in the magnetic strip grooves and at least partially extend to the accommodating grooves to limit the magnetic blocks in the accommodating grooves. The electromagnetic coil panel is mainly used for simplifying the assembly process of the electromagnetic coil panel and improving the assembly efficiency.

Description

Technical Field

[0001] The utility model discloses an electromagnetic coil disk and an electromagnetic heating device, belonging to the technical field of electromagnetic heating devices. Background Art

[0002] With the development and promotion of the small household appliance industry, electromagnetic heating devices are deeply loved by consumers because of their advantages such as easy portability and fast heating. The existing electromagnetic heating devices include a base and a panel assembly. An electromagnetic coil disk is provided in the base. When the electromagnetic coil disk is energized, it generates heat, and then forms a heating area on the panel assembly to achieve heating of the cookware.

[0003] The prior art CN211930904U discloses an electromagnetic coil disk, including a coil bracket, a coil and a magnetic strip, the magnetic strip including an outer ring magnetic strip, an inner ring magnetic strip and a center magnetic ring, the bottom of the coil bracket is provided with a first magnetic strip clamping groove and a horizontal magnetic strip clamping groove for fixing the inner ring magnetic strip and the outer ring magnetic strip, a center hole is provided in the center of the coil bracket, and an annular magnetic ring mounting groove with an opening upward is provided on the outer peripheral side of the center hole, the center magnetic ring is arranged in the magnetic ring mounting groove, and the arrangement of the center magnetic ring can effectively reduce heat loss.

[0004] However, in the above patent, the central magnetic ring is installed into the magnetic ring installation groove from the top of the coil bracket, and the inner ring magnet and the outer ring magnetic strip are installed into the first magnetic strip clamping groove and the horizontal magnetic strip clamping groove respectively from the bottom of the coil bracket. Therefore, during the assembly process of the overall electromagnetic coil disk, the magnetic strip needs to be installed from the top and bottom of the coil bracket respectively. After the magnetic strip is fixed to one side of the coil bracket by glue, it is necessary to wait for the glue to solidify before installing the other side, which makes the entire assembly process more complicated, takes a long time, and has low assembly efficiency. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the assembly process of the electromagnetic coil disk is relatively complicated and the assembly efficiency is low. To this end, an electromagnetic coil disk and an electromagnetic heating device are provided, which can simplify the assembly process of the electromagnetic coil disk and improve the assembly efficiency.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An electromagnetic coil disk includes a coil support, a coil and a magnetic conductor, wherein the coil is wound around the coil support, and the magnetic conductor includes a magnetic strip and a magnetic block. A plurality of magnetic strip slots for mounting the magnetic strips are radially distributed at the bottom of the coil support, and the coil support is provided with a receiving slot for mounting the magnetic block, wherein the notch of the receiving slot faces the bottom of the coil support, and the magnetic strip is fixed in the magnetic strip slot and at least partially extends into the receiving slot to confine the magnetic block in the receiving slot.

[0008] The beneficial effects of adopting the utility model are:

[0009] The notch of the receiving groove described in the present invention faces the bottom of the coil bracket, and the magnetic strip groove is also located at the bottom of the coil bracket. During the assembly process of the electromagnetic coil disk, the magnetic strip and the magnetic block are respectively installed into the magnetic strip groove and the receiving groove from the bottom of the coil bracket. During the entire assembly process, the fixing of the magnetizer only needs to be completed from one side of the coil bracket, and there is no need to fix the coil bracket on the reverse side, which can effectively simplify the assembly process of the electromagnetic coil disk and make the assembly of the magnetizer and the coil bracket simpler and more convenient; in addition, the magnetizers are all fixed on the same side of the coil bracket, so the installation of all magnetizers can be completed without waiting for the glue to be fixed, which can significantly reduce the assembly time of the electromagnetic coil disk and improve the assembly efficiency of the electromagnetic coil disk; secondly, after the magnetic strip is fixed, the magnetic block can be confined in the receiving groove. Through the action of the magnetic strip on the magnetic block, the glue used to fix the magnetic block can be reduced or even the installation of the magnetic block can be completed without using glue, thereby effectively reducing the consumption of glue, which helps to reduce the production cost of the electromagnetic coil disk, and also saves the time required to fix the magnetic block, further improving the assembly efficiency of the electromagnetic coil disk.

[0010] Preferably, the wall of the receiving slot on the side away from the notch is closed. With the aforementioned technical solution, the notch of the receiving slot is located at the bottom of the coil support, and the wall of the receiving slot on the side away from the notch is close to the top of the coil support. This avoids a closed configuration, i.e., a closed top configuration of the coil support. Once the magnetic block is installed in the receiving slot, it can be hidden between the magnetic strip and the top of the coil support, and will not be exposed on the top of the coil support, thereby reducing the possibility of damage to the magnetic block due to collisions.

[0011] Preferably, the receiving slot includes a first receiving slot and a second receiving slot, the coil bracket is provided with a center hole, the first receiving slot surrounds the outer peripheral side of the center hole, and the second receiving slot is distributed at the edge of the coil bracket, and the magnetic block includes an inner magnetic block installed in the first receiving slot and an outer magnetic block installed in the second receiving slot. Using the above technical solution, the first receiving slot is located in the middle of the coil bracket, the second receiving slot is located at the edge of the coil bracket, the inner magnetic block and the outer magnetic block are installed in the first receiving slot and the second receiving slot respectively, and the coil is located between the inner magnetic block and the outer magnetic block. The inner magnetic block and the outer magnetic block can reduce the leakage of magnetic lines of force, improve the magnetic line of force concentration effect of the electromagnetic coil disk, reduce heat loss, and significantly improve heating efficiency.

[0012] Preferably, the second receiving slot is formed by a recessed end portion of the magnetic stripe slot near the edge of the coil support, and the magnetic stripe abuts against the outer magnetic block to limit the outer magnetic block from escaping from the second receiving slot; or, the outer magnetic block and the magnetic stripe are an integrated structure. Using the aforementioned technical solution, the second receiving slot is formed by a recessed magnetic jump slot, the width of the second receiving slot is relatively small, and the outer magnetic block as a whole is also relatively small. The outer magnetic block can be limited by the magnetic stripe, which can effectively eliminate the need for fixing the outer magnetic stripe and help improve the assembly efficiency of the electromagnetic coil disk; or the outer magnetic block and the magnetic stripe are an integrated structure, which can eliminate the need for separate production of the outer magnetic block, simplify the production process of the magnetizer, and improve the production efficiency of the magnetizer. Secondly, the installation of the outer magnetic block can be achieved by fixing the magnetic stripe, effectively reducing the possibility of the outer magnetic block escaping from the second receiving slot.

[0013] Preferably, the outer magnetic block is arcuate, and the coil support is provided with a plurality of circumferentially spaced second receiving slots, each of which is connected to at least two magnetic strip slots. Adopting the aforementioned technical solution, the use of an arcuate outer magnetic block can increase its length, improve its magnetic field focusing effect, and contribute to improving the heating efficiency of the electromagnetic coil disk. Furthermore, the second receiving slot is connected to at least two magnetic strip slots, meaning that at least two magnetic strips constrain the outer magnetic block, increasing the support force of the magnetic strips on the outer magnetic block. This eliminates the need for securing the outer magnetic block, thereby improving assembly efficiency.

[0014] Preferably, both ends of the second receiving slot are connected to a magnetic strip slot. By adopting the above technical solution, the two magnetic strips can be respectively pressed against the two ends of the external magnetic block, so that the force on the external magnetic block is more uniform, the positioning stability of the external magnetic block is improved, and the possibility of the external magnetic block escaping from the second receiving slot is reduced.

[0015] Preferably, the second receiving groove is an annular groove, the external magnetic block is annular, and the second receiving groove is provided with a limiter that limits the external magnetic block from escaping from the second receiving groove; or the external magnetic block is fixed in the second receiving groove by glue. With the above technical solution, the external magnetic block is annular as a whole, so that the external magnetic block can surround the coil, further reducing the leakage of the electromagnetic wire, improving the magnetic field concentration effect of the electromagnetic coil disk, reducing heat loss, and significantly improving the heating efficiency; in addition, since the diameter of the external magnetic block is large and the overall weight is large, fixing the external magnetic block by a limiter or glue can effectively improve the positioning stability of the external magnetic block, reduce the possibility of the external magnetic block escaping from the second receiving groove, and make the overall structure of the electromagnetic coil disk more stable and reliable.

[0016] Preferably, the magnetic stripe slot includes side walls on both sides of the magnetic stripe slot, and the side walls are provided with limit buckles to prevent the magnetic stripe from escaping the magnetic stripe slot. Using the above technical solution, the limit buckles can limit the magnetic stripe, thereby preventing the magnet from escaping the magnetic stripe slot and improving the positioning stability of the magnetic stripe.

[0017] Preferably, the limit buckle is an elastomer, and the limit buckle is provided with a guide surface for guiding the magnetic strip to be inserted into the magnetic strip slot; or, the limit buckle is made of thermoplastic material, and the limit buckle is installed on the bottom end surface of the side wall. The limit buckle is deformed by heat and extends toward the inside of the side wall to limit the magnetic strip from leaving the magnetic strip slot. With the above-mentioned technical solution, the limiting buckle adopts an elastic part, and the elastic deformation of the limiting buckle itself can be used to insert the magnetic strip into the magnetic strip slot. At the same time, the guide surface can guide the installation of the magnetic strip, reducing the external force required for the magnetic strip to be inserted into the magnetic strip slot, making the installation of the magnetic strip more convenient and labor-saving, and helping to speed up the installation efficiency of the magnetic strip; or the limiting buckle adopts a thermoplastic material. Before the magnetic strip is installed, the limiting buckle is at the bottom end face of the side wall. At this time, the limiting buckle will not hinder the insertion of the magnetic strip into the magnetic strip slot, making the installation of the magnetic strip simpler. After the magnetic strip is inserted into the magnetic strip slot, the limiting buckle is heated so that the limiting buckle is deformed by the heat and extends to the inside of the side wall, thereby limiting the magnetic strip from leaving the magnetic strip slot. During the installation process of the magnetic strip, the magnetic strip will not collide or squeeze the limiting buckle, which can effectively reduce the possibility of the limiting buckle breaking.

[0018] The utility model also shows an electromagnetic heating device, which includes a base, a panel assembly and an electromagnetic coil disk. The electromagnetic coil disk is located at the lower side of the panel assembly, and the electromagnetic coil disk adopts any one of the electromagnetic coil disks described above.

[0019] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic structural diagram of an electromagnetic coil disk of the utility model;

[0022] Figure 2 This is an exploded view of an electromagnetic coil disk of the utility model;

[0023] Figure 3 This is a schematic structural diagram of a coil support in an electromagnetic coil disk of the utility model;

[0024] Figure 4 for Figure 3 A partial enlarged view of part A;

[0025] Figure 5 This is a cross-sectional view of an electromagnetic coil disk of the present utility model;

[0026] Figure 6 This is the structure of the electromagnetic coil disk in the second embodiment of the present utility model;

[0027] Figure 7 This is a structural schematic diagram of an electromagnetic heating device of the present utility model.

[0028] Figure numerals: 1. electromagnetic coil disk; 11. coil bracket; 111. first accommodating slot; 112. second accommodating slot; 113. first magnetic stripe slot; 114. second magnetic stripe slot; 1141. side wall; 1142. bottom end face; 115. limit buckle; 116. center hole; 12. coil; 13. magnetic conductor; 131. inner magnetic block; 132. outer magnetic block; 133. inner magnetic strip; 134. outer magnetic strip; 2. base; 21. power cord. DETAILED DESCRIPTION

[0029] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] 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 the technical features being referenced. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless expressly limited otherwise.

[0032] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] Example 1:

[0034] like Figures 1 to 5As shown, this embodiment shows an electromagnetic coil disk 1, including a coil support 11, a coil 12 and a magnetizer 13, wherein the top of the coil support 11 is provided with a plurality of winding grooves spaced apart along the radial direction of the coil support 11, and the coil 12 is wound along the winding grooves to achieve the fixation of the coil 12 to the coil support 11. A center hole 116 is provided at the center of the coil support 11, and the winding grooves are located on the outer periphery of the center hole 116. The bottom of the coil support 11 is provided with a receiving groove and a plurality of magnetic strip grooves distributed radially, and the notches of the receiving groove and the magnetic strip grooves are both facing the bottom of the coil support 11. The magnetizer 13 includes a magnetic strip and a magnetic block, wherein the magnetic strip is installed in the magnetic strip groove, and the magnetic block is installed in the receiving groove. During the assembly process of the magnetizer 13, the magnetic block is first installed into the receiving groove from the bottom of the coil support 11, and then the magnetic strip is installed into the magnetic strip groove from the bottom of the coil support 11. When the magnetic strip is fixed in the magnetic strip groove, part of the magnetic strip extends into the receiving groove to confine the magnetic block in the receiving groove.

[0035] The notch of the receiving groove in this embodiment faces the bottom of the coil bracket 11, and the magnetic strip groove is also at the bottom of the coil bracket 11. During the assembly process of the electromagnetic coil disk 1, the magnetic strip and the magnetic block are respectively installed into the magnetic strip groove and the receiving groove from the bottom of the coil bracket 11. During the entire assembly process, the fixing of the magnetizer 13 can be completed from only one side of the coil bracket 11, and there is no need to fix the coil bracket 11 on the reverse side, which can effectively simplify the assembly process of the electromagnetic coil disk 1 and make the assembly of the magnetizer 13 and the coil bracket 11 simpler and more convenient. In addition, the magnetizers 13 are fixed on the On the same surface, there is no need to wait for the glue to be fixed to complete the installation of all the magnetizers 13, which can significantly reduce the assembly time of the electromagnetic coil disk 1 and improve the assembly efficiency of the electromagnetic coil disk 1; secondly, after the magnetic strip is fixed, the magnetic block can be confined in the receiving groove. Through the effect of the magnetic strip on the magnetic block, the glue used to fix the magnetic block can be reduced or even the installation of the magnetic block can be completed without using glue, thereby effectively reducing the consumption of glue, helping to reduce the production cost of the electromagnetic coil disk 1, and also saving the time required for fixing the magnetic block, further improving the assembly efficiency of the electromagnetic coil disk 1.

[0036] like Figures 1 to 3As shown, the accommodating groove in this embodiment includes a first accommodating groove 111 and a second accommodating groove 112, wherein the first accommodating groove 111 is arranged on the outer peripheral side of the center hole 116, and the first accommodating groove 111 is between the winding groove and the center hole 116, the second accommodating groove 112 is distributed on the edge of the coil bracket 11, and the second accommodating groove 112 is on the outer peripheral side of the winding groove, the magnetic block includes an inner magnetic block 131 installed in the first accommodating groove 111 and an outer magnetic block 132 installed in the second accommodating groove 112; in addition, the magnetic stripe groove includes a first magnetic stripe groove 113 and a second magnetic stripe groove 114, and the magnetic stripe includes an inner magnetic stripe 133 installed in the first magnetic stripe groove 113 and an outer magnetic stripe 134 installed in the second magnetic stripe groove 114; in this embodiment, the first magnetic stripe groove 113 and the second magnetic stripe groove 114 are on the lower side of the coil 12, and the inner magnetic stripe 133 and the outer magnetic strip 134 can effectively reduce the leakage of the magnetic lines of force of the coil 12 to the bottom of the coil bracket 11. In addition, the first accommodating groove 111 is in the middle of the coil bracket 11, and the second accommodating groove 112 is at the edge of the coil bracket 11. The inner magnetic block 131 and the outer magnetic block 132 are respectively installed in the first accommodating groove 111 and the second accommodating groove 112. The coil 12 is located between the inner magnetic block 131 and the outer magnetic block 132, thereby reducing the leakage of magnetic lines of force from the inner and outer sides of the coil bracket 11. Through the cooperation of the magnetic conductor 13, the magnetic lines of force generated by the coil 12 can be gathered on the upper side of the coil bracket 11, thereby forming a heating zone on the upper side of the coil bracket 11. At the same time, it can also reduce the leakage of magnetic lines of force, improve the magnetic line gathering effect of the electromagnetic coil disk 1, reduce heat loss, and significantly improve the heating efficiency.

[0037] like Figures 1 to 5 As shown, in this embodiment, the first magnetic stripe grooves 113 and the second magnetic stripe grooves 114 are radially and evenly distributed at the bottom of the coil bracket 11, wherein the number of the first magnetic stripe grooves 113 is less than the number of the second magnetic stripe grooves 114, and the ends of the first magnetic stripe grooves 113 near the center hole 116 are connected to the first receiving groove 111, and the ends of the second magnetic stripe grooves 114 near the edge of the coil bracket 11 are recessed to form the second receiving groove 112, and the inner magnetic block 131 is annular as a whole matching the first receiving groove 111, and the inner magnetic strip 133 is long. During the installation process, the inner magnetic block 131 is installed as a whole into the first receiving groove 111, and then the inner magnetic strip 133 is installed into the first magnetic stripe groove 113. The end of the inner magnetic strip 133 near the center hole 116 will extend to the first receiving groove 111, thereby restricting the inner magnetic block 131 in the first receiving groove 111 to prevent the inner magnetic block 131 from escaping from the first receiving groove 111.

[0038] It should be noted that, since the first receiving groove 111 is located in the center of the coil support 11 and has a relatively small diameter, the diameter of the inner magnetic block 131 is also relatively small, so the overall mass of the inner magnetic block 131 is relatively light. In addition, when the inner magnetic block 131 and the inner magnetic strips 133 are installed, the ends of all the inner magnetic strips 133 close to the center hole 116 will extend to the first receiving groove 111 and form a limit for the inner magnetic block 131, that is, all the inner magnetic strips 133 can support the inner magnetic block 131, and then the supporting force of the inner magnetic block 131 can be evenly distributed to each inner magnetic block 131. The magnetic strips 133 reduce the pressure on each inner magnetic strip 133. At this time, the inner magnetic block 131 does not need to adopt other fixing methods. It can be positioned in the first accommodating groove 111 only by the support of the inner magnetic strips 133. At the same time, the force exerted by the inner magnetic block 131 on the inner magnetic strips 133 is small, and it will not affect the fixation of the inner magnetic strips 133 and the first magnetic strip groove 113. Therefore, the fixation of the inner magnetic block 131 can be achieved by completing the fixation of the inner magnetic strips 133 during the assembly process, which can save the fixing process of the inner magnetic block 131 and significantly speed up the assembly efficiency of the electromagnetic coil disk 1.

[0039] In this embodiment, the second accommodating grooves 112 are distributed at intervals along the circumference of the coil bracket 11 at the edge of the coil bracket 11, and since the second accommodating grooves 112 are formed by the depression of the second magnetic stripe groove 114, the number of the second accommodating grooves 112 is equal to the number of the second magnetic stripe grooves 114. In addition, the outer magnetic strip 134 and the outer magnetic block 132 are an integrated structure, and the outer magnetic block 132 is located on the upper side of the end of the outer magnetic strip 134 close to the edge of the coil bracket 11, that is, the outer magnetic strip 134 and the outer magnetic block 132 are combined to form an L-shaped magnetic conductor 13. During the installation process, the outer magnetic strip 134 is installed in the second magnetic stripe groove 114, and the outer magnetic strip 134 is connected to The end of the outer magnetic block 132 extends to the second receiving groove 112, and the outer magnetic block 132 is inserted into the second receiving groove 112. When the outer magnetic strip 134 is fixed in the second magnetic strip groove 114, the outer magnetic block 132 can be fixed in the second receiving groove 112, thereby eliminating the installation process of the outer magnetic block 132. At the same time, it can also effectively reduce the possibility of the outer magnetic block 132 detaching from the second receiving groove 112 and speed up the assembly efficiency of the electromagnetic coil disk 1; in addition, the outer magnetic block 132 and the outer magnetic strip 134 adopt an integrated structure, which can eliminate the need for separate production of the outer magnetic block 132, simplify the production process of the magnetizer 13, and improve the production efficiency of the magnetizer 13.

[0040] Of course, it is understandable that in other embodiments, the outer magnetic strip 134 and the outer magnetic block 132 may also be a split structure. During the installation process, the outer magnetic block 132 is first installed into the second receiving groove 112, and then the outer magnetic strip 134 is fixed in the second magnetic strip groove 114. When the outer magnetic strip 134 is fixed, the end of the outer magnetic strip 134 close to the edge of the coil bracket 11 extends to the second receiving groove 112, thereby restricting the outer magnetic block 132 in the receiving groove to prevent the outer magnetic block 132 from escaping from the second receiving groove 112; it should also be noted that in this embodiment, the second receiving groove 112 is formed by the depression of the second magnetic strip groove 114, so the volume of the second receiving groove 112 is relatively small, and the overall volume of the installed outer magnetic block 132 is also relatively small. Therefore, the outer magnetic block 132 can be restricted in the second receiving groove 112 by the support of the outer magnetic strip 134, and there is no need to use other methods to fix the outer magnetic block 132, which can effectively simplify the assembly process of the outer magnetic block 132 and improve the assembly efficiency of the electromagnetic coil disk 1.

[0041] Regarding the first magnetic stripe slot 113 and the second magnetic stripe slot 114, Figure 1 and Figure 3 As shown, in this embodiment, the bottom of the coil support 11 is provided with six first magnetic stripe slots 113 and 12 second magnetic stripe slots 114. Since the second magnetic stripe slots 114 are closer to the edge of the coil support 11 than the first magnetic stripe slots 113, the area to be distributed of the second magnetic stripe slots 114 is larger, so more second magnetic stripe slots 114 are required to increase the coverage rate of the outer magnetic stripes 134, thereby reducing the leakage of the electromagnetic wire to the bottom of the coil support 11, which helps to improve the magnetic concentration effect; in addition, some of the second magnetic stripe slots 114 and the first magnetic stripe slots 113 are distributed along the same radial direction, thereby making the inner magnetic stripes 133 and the outer magnetic stripes 134 fit more tightly, which helps to reduce the leakage of the electromagnetic wire to the bottom of the coil support 11; of course, it is understandable that in other embodiments, the second magnetic stripe slots 114 can also be staggered with the first magnetic stripe slots 113, that is, the second magnetic stripe slots 114 and the first magnetic stripe slots 113 are not in the same radial direction.

[0042] like Figures 3 to 5 As shown, the magnetic stripe slots in this embodiment include two side walls 1141, and a notch of the magnetic stripe slot is formed between the two side walls 1141. After the magnetic strip is fixed, it is located between the two side walls 1141. The wall surface of the side wall 1141 facing the bottom of the coil bracket 11 is the bottom end surface 1142, and a limiting buckle 115 is provided on the bottom end surface 1142. The limiting buckle 115 in this embodiment is made of thermoplastic material, and the limiting buckle 115 has a first form and a second form, wherein when the magnetic stripe is not installed, the limiting buckle 115 is in the first form, and after the magnetic stripe is installed in the magnetic stripe slot, the limiting buckle 115 is heated and converted into the second form, and the limiting buckle 115 in the second form can confine the magnetic stripe in the magnetic stripe slot.

[0043] It should be noted that when the limiting buckle 115 is in the first form, the limiting buckle 115 protrudes from the bottom end surface 1142 of the side wall 1141, and the thickness of the limiting buckle 115 is not greater than the thickness of the side wall 1141, that is, the limiting buckle 115 will not block the notch of the magnetic stripe slot. Therefore, during the installation of the magnetic stripe, the limiting buckle 115 will not hinder the insertion of the magnetic stripe into the magnetic stripe slot, so that the magnetic stripe can be smoothly inserted into the magnetic stripe slot, which can effectively reduce the difficulty of installing the magnetic stripe. After the magnetic stripe is installed into the magnetic stripe slot, the limiting buckle 115 is heated, and the limiting buckle 115 is deformed by the heat and guides the limiting buckle 115 to extend toward the inner side of the side wall 1141, thereby converting the limiting buckle 115 into a second form. In the second form, the limiting buckle 115 partially extends to the inner side of the side wall 1141, thereby reducing the slot opening of the magnetic stripe slot. At this time, the limiting buckle 115 can limit the magnetic stripe and confine the magnetic stripe in the magnetic stripe slot to achieve fixation of the magnetic stripe.

[0044] The use of the above-mentioned limiting buckle 115 can effectively prevent the magnetic strip from colliding or being squeezed with the limiting buckle 115 during the installation process, and can effectively reduce the possibility of the limiting buckle 115 breaking. At the same time, it can also save the filling of glue and effectively reduce the production cost of the electromagnetic coil disk 1.

[0045] Of course, it is understandable that in other embodiments, the limiting buckle 115 can also be an elastomer, one end of the limiting buckle 115 is fixed to the side wall 1141 of the magnetic stripe slot, and the other end extends to the inner side of the side wall 1141 to reduce the width of the slot. At the same time, the limiting buckle 115 is provided with a guide surface toward the bottom of the coil bracket 11, and the guide surface can guide the installation of the magnetic stripe, reducing the external force required for the magnetic stripe to be inserted into the magnetic stripe slot. During the installation of the magnetic stripe, the magnetic stripe squeezes the limiting buckle 115 and causes the limiting buckle 115 to undergo elastic deformation, thereby pressing the magnetic stripe into the magnetic stripe slot. The limiting buckle 115 returns to its original shape under the action of its own elastic force, and limits the magnetic stripe to prevent the magnetic stripe from escaping the magnetic stripe slot. The limiting buckle 115 uses an elastomer, which helps to speed up the installation efficiency of the magnetic stripe; or, in other embodiments, the magnetic stripe slot can be filled with glue, and the glue can be used to bond the magnetic stripe to achieve fixation of the magnetic stripe and the magnetic stripe slot.

[0046] Example 2:

[0047] like Figure 6As shown, in this embodiment, the second accommodating groove 112 and the outer magnetic block 132 are both arc-shaped, and the coil bracket 11 is provided with a plurality of second accommodating grooves 112 distributed at circumferential intervals. The second accommodating groove 112 is connected to at least two second magnetic strip grooves 114. When the outer magnetic strips 134 and the outer magnetic block 132 are installed, at least two outer magnetic strips 134 form a restriction on the outer magnetic block 132. Since the outer magnetic block 132 is arc-shaped, its overall mass is relatively large. The support of the outer magnetic block 132 by multiple outer magnetic strips 134 can improve the supporting force of the outer magnetic block 132, and at the same time, it can also disperse the pressure on the outer magnetic strip 134, thereby preventing the outer magnetic strip 134 from detaching from the second magnetic strip groove 114 due to the large pressure, thereby making the overall structure of the electromagnetic coil disk 1 more stable and reliable. In addition, the outer magnetic block 132 can be restricted to the second accommodating groove 112 by only using the outer magnetic strips 134, and the fixation of the outer magnetic block 132 can also be omitted, thereby improving the assembly efficiency of the outer magnetic block 132.

[0048] In order to make the fixation of the external magnetic block 132 more stable, in this embodiment, both ends of the second receiving groove 112 are connected to the magnetic strip groove, that is, there are two magnetic strips respectively against the two ends of the external magnetic block 132, so that the force on the external magnetic block 132 is more uniform, the positioning stability of the external magnetic block 132 is improved, and the possibility of the external magnetic block 132 detaching from the second receiving groove 112 is reduced.

[0049] Of course, it is understandable that in other embodiments, the second receiving groove 112 can also be an annular groove, and the corresponding outer magnetic block 132 can also be annular. In this case, the second receiving groove 112 is connected to all the second magnetic strip grooves 114. When the outer magnetic strips 134 and the outer magnetic block 132 are installed, all the outer magnetic strips 134 support the outer magnetic block 132. The outer magnetic block 132 is annular as a whole, so that the outer magnetic block 132 can surround the coil 12, further reducing the leakage of the electromagnetic wire, improving the magnetic field line gathering effect of the electromagnetic coil disk 1, reducing heat loss, and significantly improving the heating efficiency. It should also be noted that since the second receiving groove 112 is in The edge of the coil bracket 11 has a larger diameter, and the corresponding diameter of the outer magnetic block 132 is also relatively large, which leads to a larger mass of the outer magnetic block 132. After assembly is completed, the outer magnetic block 132 will exert a greater pressure on the outer magnetic strip 134. Therefore, in this embodiment, a limiter can be provided in the second receiving groove 112 to disperse the pressure on the outer magnetic strip 134 and prevent the outer magnetic strip 134 from detaching from the second magnetic strip groove 114 due to excessive force; of course, in other embodiments, glue can be filled in the second receiving groove 112 to form a bond with the outer magnetic block 132 through the glue to achieve the fixation of the outer magnetic block 132 to the second receiving groove 112.

[0050] Example 3:

[0051] like Figure 7As shown, this embodiment shows an electromagnetic heating device, including a base 2, a panel assembly, an electromagnetic coil disk 1 and a power cord 21. The electromagnetic coil disk 1 adopts the electromagnetic coil disk 1 described in Example 1 and Example 2. The electromagnetic coil disk 1 is located on the lower side of the panel assembly. After the power cord 21 is connected to the power supply, it provides current to the electromagnetic coil disk 1. The electromagnetic coil disk 1 generates heat under the action of the current and forms a heating area on the panel assembly to achieve heating of the cookware.

[0052] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. An electromagnetic coil disk, comprising a coil support, a coil, and a magnetic conductor, wherein the coil is wound around the coil support, the magnetic conductor comprises a magnetic strip and a magnetic block, and a plurality of magnetic strip slots for mounting the magnetic strips are radially distributed at the bottom of the coil support, characterized in that: The coil support is provided with a receiving slot for mounting a magnetic block, the slot opening of the receiving slot faces the bottom of the coil support, the magnetic strip is fixed in the magnetic strip slot and at least partially extends to the receiving slot to confine the magnetic block in the receiving slot.

2. The electromagnetic coil disk according to claim 1, characterized in that: The wall surface of the accommodating groove away from the groove opening is closed.

3. The electromagnetic coil disk according to claim 1, characterized in that: The accommodating groove includes a first accommodating groove and a second accommodating groove. The coil bracket is provided with a center hole. The first accommodating groove surrounds the outer peripheral side of the center hole. The second accommodating groove is distributed on the edge of the coil bracket. The magnetic block includes an inner magnetic block installed in the first accommodating groove and an outer magnetic block installed in the second accommodating groove.

4. The electromagnetic coil disk according to claim 3, characterized in that: The second receiving slot is formed by a recessed end portion of the magnetic strip slot near the edge of the coil support, and the magnetic strip abuts against the outer magnetic block to restrict the outer magnetic block from leaving the second receiving slot; alternatively, the outer magnetic block and the magnetic strip are an integrated structure.

5. The electromagnetic coil disk according to claim 3, characterized in that: The outer magnetic block is arc-shaped, and the coil support is provided with a plurality of second accommodating grooves distributed at intervals in the circumferential direction, and the second accommodating grooves are connected to at least two magnetic strip grooves.

6. The electromagnetic coil disk according to claim 5, characterized in that: Both ends of the second accommodating slot are connected to magnetic strip slots.

7. The electromagnetic coil disk according to claim 3, characterized in that: The second receiving groove is an annular groove, the external magnetic block is annular, and the second receiving groove is provided with a limiter to limit the external magnetic block from leaving the second receiving groove; or the external magnetic block is fixed in the second receiving groove by glue.

8. The electromagnetic coil disk according to claim 1, characterized in that: The magnetic stripe slot includes side walls on both sides of the magnetic stripe slot, and the side walls are provided with limiting buckles for limiting the magnetic stripe from leaving the magnetic stripe slot.

9. The electromagnetic coil disk according to claim 8, characterized in that: The limiting buckle is an elastomer and is provided with a guide surface for guiding the magnetic strip to be inserted into the magnetic strip slot; alternatively, the limiting buckle is made of thermoplastic material and is installed on the bottom end surface of the side wall. The limiting buckle is deformed by heat and extends toward the inside of the side wall to limit the magnetic strip from leaving the magnetic strip slot.

10. An electromagnetic heating device, comprising a base, a panel assembly and an electromagnetic coil disk, wherein the electromagnetic coil disk is located at the lower side of the panel assembly, characterized in that: The electromagnetic coil disk is the electromagnetic coil disk according to any one of claims 1 to 9.

Images