Electromagnetic heating device and cooking utensil

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses an electromagnetic heating device and a cooking utensil, the electromagnetic heating device comprises a wire coil and a fixing support fixed to the wire coil and used for installing a magnetic part, the bottom wall of the wire coil is provided with a bottom winding area, and the side wall of the wire coil is provided with a side winding area; a connecting column used for being fixedly connected with the fixing support is arranged between the side winding area and the bottom winding area, the connecting column is provided with a contact part located in the side winding area, and the contact part comprises a body and a limiting rib which is arranged on at least one side of the body and extends in the circumferential direction of the side winding area so as to reduce the pressure intensity between the coil and the connecting column. The condition that the coil is easy to break due to stress concentration is avoided, so that the assembly difficulty of the electromagnetic heating device is reduced, and the production cost of the electromagnetic heating device is reduced at the same time; the cooking utensil comprises a pot body and the electromagnetic heating device, the electromagnetic heating device is arranged in the pot body, and the production difficulty and the production cost of the cooking utensil are reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of kitchen appliances, and specifically relates to an electromagnetic heating device and a cooking utensil. Background Art

[0002] Cooking utensils are essential household appliances in people's daily lives. They include a pot body with a heating device and an inner pot located above the heating device. In order to obtain higher heating efficiency and heating uniformity, some high-end models use electromagnetic heating as a heating device to heat the inner pot using electromagnetic heating.

[0003] The existing electromagnetic heating device includes a wire drum and a magnetic strip frame arranged on the wire drum. The wire drum is usually provided with a bottom winding area and a side winding area surrounding the bottom winding area, and the wire drum is also provided with a screw column for fixing and connecting the magnetic strip frame. In order to facilitate the winding of the coil located in the bottom winding area, the screw column is generally arranged between the bottom winding area and the side winding area, and a part of the screw column is located in the side winding area. However, when the coil in the side coil area is wound, the coil located in the inner circle will interfere with the screw column, which will cause the coil to bulge at the position where the screw column is located, so that the coil is easily broken due to stress concentration, thereby increasing the production difficulty and production cost of the electromagnetic heating device. Utility Model Content

[0004] The present application provides an electromagnetic heating device and a cooking utensil to reduce the production difficulty and production cost of the electromagnetic heating device.

[0005] The technical solution adopted in this application is:

[0006] An electromagnetic heating device, comprising a wire drum and a fixing bracket fixed to the wire drum and used to install a magnetic member, wherein the bottom wall of the wire drum has a bottom winding area, the side wall of the wire drum has a side winding area, a connecting column for fixed connection with the fixing bracket is arranged between the side winding area and the bottom winding area, the connecting column has a contact portion located in the side winding area, the contact portion comprises a body and a limiting rib arranged on at least one side of the body and extending along the circumference of the side winding area

[0007] The electromagnetic heating device described in this application also includes the following additional technical features:

[0008] The connecting column is provided in plurality along the circumference of the wire drum and each of the connecting columns has a contact portion. The limiting rib has a first end connected to the body and a second end opposite to the first end, and the curvature of the first end is smaller than the curvature of the second end.

[0009] The thickness L of the limiting rib satisfies: 0.4mm≤L≤1.5mm;

[0010] And / or, the height H of the limiting rib satisfies: 2mm≤H≤6mm.

[0011] The side wire winding area has a side wire pressing rib, the side wire pressing rib has a fixed end fixed to the side wire winding area, and the limiting rib extends to the fixed end.

[0012] An installation avoidance area is provided between the bottom winding area and the side winding area, and the connecting column further comprises a connecting portion located in the installation avoidance area, and a volume of the connecting portion is greater than a volume of the main body.

[0013] The connecting column has a connecting hole, and the connecting hole is arranged in the connecting part.

[0014] The bottom winding area is provided with a bottom wire pressing rib, and the fixing bracket is provided with a bottom magnetic piece which is staggered with the bottom wire pressing rib.

[0015] The side winding area is provided with a side wire pressing rib, and the fixing bracket is provided with a side magnetic piece which is staggered with the side wire pressing rib.

[0016] The bottom winding area is provided with a bottom wire pressing rib and a supporting boss corresponding to the bottom wire pressing rib, and a winding space is formed between the supporting boss and the bottom wire pressing rib.

[0017] The present application also discloses a cooking utensil, comprising a pot body and the above-mentioned electromagnetic heating device, wherein the electromagnetic heating device is arranged inside the pot body.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0019] 1. The electromagnetic heating device in the present application includes a wire drum and a fixed bracket fixed to the wire drum and used to install a magnetic part, the bottom wall of the wire drum has a bottom winding area, the side wall of the wire drum has a side winding area, a connecting column for fixed connection with the fixed bracket is arranged between the side winding area and the bottom winding area, the connecting column has a contact portion located in the side winding area, and the contact portion includes a body and a limiting rib arranged on at least one side of the body and extending along the circumference of the side winding area, so that when the coil located in the side winding area is wound, the coil located in the inner circle contacts the body and the limiting rib, thereby increasing the contact area between the coil and the connecting column, so that the coil transitions smoothly at the position where the connecting column is located, so as to reduce the pressure between the coil and the connecting column, avoid the situation where the coil is easily broken due to stress concentration, thereby reducing the assembly difficulty of the electromagnetic heating device, improving the assembly efficiency of the electromagnetic heating device, and reducing the production cost of the electromagnetic heating device. In addition, the limiting rib can also increase the structural strength of the wire drum and the structural strength of the connecting column to ensure the connection stability of the fixed bracket and the wire drum, and increase the service life of the electromagnetic heating device.

[0020] 2. As a preferred embodiment of the present application, a plurality of connecting columns are arranged along the circumference of the wire drum and each connecting column has a contact portion, and the limiting rib has a first end connected to the connecting column and a second end opposite to the first end, and the curvature of the first end is smaller than the curvature of the second end, so as to increase the connection point between the fixed bracket and the wire drum, and further increase the connection stability between the fixed bracket and the wire drum, so as to further increase the service life of the electromagnetic heating device; at the same time, it can increase the support area of ​​the coil located in the inner circle, so as to increase the connection stability between the coil and the wire drum, reduce the risk of the coil loosening, and ensure the normal operation of the electromagnetic heating device; in addition, the limiting rib is smoothly transitioned in the direction away from the main body, so as to ensure the winding area of ​​the side winding area while making the coil smoothly transition at the contact portion, further avoiding the situation where the coil is easily stressed and broken, thereby further reducing the assembly difficulty and production cost of the electromagnetic heating device.

[0021] 3. As a preferred embodiment of the present application, the thickness L of the limiting rib satisfies: 0.4mm≤L≤1.5mm, so as to ensure the structural strength of the limiting rib and the supporting effect on the coil while reducing the space occupied by the limiting rib to facilitate winding of the coil, thereby improving the assembly efficiency of the electromagnetic heating device by the assemblers and reducing the production cost of the electromagnetic heating device; the height H of the limiting rib satisfies: 2mm≤H≤6mm, so as to ensure the supporting effect of the limiting rib on the coil while reducing the vertical space occupied by the limiting rib, so that the limiting rib and other components in the cooking utensil are avoided, so as to achieve the effect of facilitating the assembly of the cooking utensil equipped with the electromagnetic heating device, and at the same time facilitate the miniaturization of the cooking utensil equipped with the electromagnetic heating device.

[0022] 4. As a preferred embodiment of the present application, the side winding area has a side wire pressing rib, and the side wire pressing rib has a fixed end fixed to the side winding area, and the limiting rib extends to the fixed end to increase the structural strength of the limiting rib, thereby increasing the supporting effect of the limiting rib on the coil, further reducing the stress concentration of the coil, thereby reducing the difficulty of assembling the coil and avoiding wire breakage, improving the assembly efficiency of the electromagnetic heating device and reducing the production cost of the electromagnetic heating device. At the same time, it is also possible to increase the connection stability between the side wire pressing rib and the wire drum to increase the stability of the coil located in the side winding area, thereby increasing the stability of the electromagnetic heating device during operation and the service life of the electromagnetic heating device.

[0023] 5. As a preferred embodiment of the present application, there is an installation avoidance area between the bottom winding area and the side winding area, and the connecting column also includes a connecting portion located in the installation avoidance area, and the volume of the connecting portion is larger than the volume of the main body. That is to say, most of the connecting column is located in the avoidance area, and a small part of the connecting portion is located in the side winding area, so as to ensure that the coil located in the bottom winding area is convenient for winding while ensuring the area of ​​the side winding area that can be used to wind the coil, so that the side winding area can be used to wind as many turns of coil as possible, so as to ensure the heating efficiency and heating uniformity of the electromagnetic heating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 This is a schematic structural diagram of an electromagnetic heating device according to one embodiment of the present application;

[0026] Figure 2 This is a schematic diagram of the structure of the wire drum in one embodiment of the present application;

[0027] Figure 3 This is a schematic structural diagram of the wire drum from another perspective in one embodiment of the present application;

[0028] Figure 4 This is a schematic diagram of an explosion of the electromagnetic heating device described in one embodiment of the present application.

[0029] Reference numerals:

[0030] 1. Wire drum; 11. Bottom winding area; 111. Bottom wire pressing ribs; 12. Side winding area; 121. Side wire pressing ribs; 122. Limiting channel; 13. Installation avoidance area;

[0031] 2. Fixed bracket; 21. Bottom magnetic part; 22. Side magnetic part; 23. Fixed channel; 231. Elastic arm;

[0032] 3. Connecting column; 31. Connecting part; 32. Contact part; 321. Main body; 322. Limiting rib;

[0033] 4. Coil. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0036] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0039] Reference Figures 1 to 4 An electromagnetic heating device comprises a wire drum 1 and a fixing bracket 2 fixed to the wire drum 1 and used for mounting a magnetic part, the bottom wall of the wire drum 1 having a bottom winding area 11, the side wall of the wire drum 1 having a side winding area 12, a connecting column 3 for fixing connection with the fixing bracket 2 is arranged between the side winding area 12 and the bottom winding area 11, the connecting column 3 has a contact portion 32 located in the side winding area 12, the contact portion 32 comprises a main body 321 and a limiting rib 322 arranged on at least one side of the main body 321 and extending along the circumference of the side winding area 12.

[0040] Specifically, when the coil 4 located in the side winding area 12 is wound, the coil 4 located in the inner circle contacts the body 321 and the limiting ribs 322, thereby increasing the contact area between the coil 4 and the connecting column 3, so that the coil 4 smoothly transitions to the position where the connecting column 3 is located, thereby reducing the pressure between the coil 4 and the connecting column 3, and avoiding the situation where the coil 4 is easily broken due to stress concentration, thereby reducing the assembly difficulty of the electromagnetic heating device, improving the assembly efficiency of the electromagnetic heating device, and reducing the production cost of the electromagnetic heating device. In addition, the limiting ribs 322 can also increase the structural strength of the wire drum 1 and the structural strength of the connecting column 3 to ensure the connection stability between the fixed bracket 2 and the wire drum 1, and increase the service life of the electromagnetic heating device.

[0041] The present application does not specify the number of the limiting ribs 322. One limiting rib 322 may be provided corresponding to the main body 321, that is, the limiting rib 322 is located on one side of the main body 321, so that the limiting rib 322 and the winding starting end of the coil 4 are avoided to wind the coil 4; two limiting ribs 322 may also be provided corresponding to the main body 321, and the two limiting ribs 322 are respectively located on both sides of the main body 321, so as to further increase the contact area between the coil 4 and the connecting column 3, further reduce the stress concentration of the coil 4, further avoid the situation of wire breakage during the winding process of the coil 4, and further reduce the production cost of the electromagnetic heating device.

[0042] In a preferred embodiment, referring to Figure 2 and Figure 3 There are multiple connecting columns 3 arranged along the circumference of the wire drum 1, and each connecting column 3 has a contact portion 32. The limiting rib 322 has a first end connected to the body 321 and a second end opposite to the first end, and the curvature of the first end is smaller than the curvature of the second end.

[0043] Specifically, a plurality of connecting columns 3 are provided along the circumference of the wire drum 1, which increases the connection points between the fixed bracket 2 and the wire drum 1, further increases the connection stability between the fixed bracket 2 and the wire drum 1, and further increases the service life of the electromagnetic heating device. At the same time, a plurality of limiting ribs 322 are also provided, which can increase the support area of ​​the coil 4 located in the inner circle, increase the connection stability between the coil 4 and the wire drum 1, reduce the risk of the coil 4 being loose, and ensure the normal operation of the electromagnetic heating device. In addition, the curvature of the first end is smaller than the curvature of the second end, so that the limiting rib 322 transitions smoothly in the direction away from the body 321, so as to ensure the winding area of ​​the side winding area 12 while making the coil 4 smoothly transition at the position of the contact portion 32, further avoiding the situation where the coil 4 is prone to stress concentration and wire breakage, thereby further reducing the assembly difficulty and production cost of the electromagnetic heating device.

[0044] The present application does not specifically limit the thickness of the limiting rib 322. Preferably, the thickness L of the limiting rib 322 satisfies: 0.4 mm ≤ L ≤ 1.5 mm, so as to reduce the space occupied by the limiting rib 322 while ensuring the structural strength of the limiting rib 322 and the supporting effect on the coil 4, so as to wind the coil 4, thereby improving the assembly efficiency of the electromagnetic heating device by the assembler and reducing the production cost of the electromagnetic heating device. In other embodiments, the thickness of the limiting rib 322 can also be other sizes, as long as it can support the coil 4.

[0045] The present application does not specifically limit the height of the limiting rib 322. Preferably, the height H of the limiting rib 322 satisfies: 2mm≤H≤6mm, so as to reduce the vertical space occupied by the limiting rib 322 while ensuring the supporting effect of the limiting rib 322 on the coil 4, so that the limiting rib 322 and other components in the cooking utensil are avoided, so as to facilitate the assembly of the cooking utensil equipped with the electromagnetic heating device, and facilitate the miniaturization of the cooking utensil equipped with the electromagnetic heating device. In other embodiments, the height of the limiting rib 322 can also be other sizes, as long as it can achieve the support of the coil 4.

[0046] The present application does not specifically limit the relationship between the limiting rib 322 and the wire drum 1. Preferably, refer to Figure 2 and Figure 3 The limiting rib 322 is connected to the wire drum 1 to increase the structural strength of the limiting rib 322, thereby increasing the supporting effect of the limiting rib 322 on the coil 4, and at the same time can also increase the structural strength of the wire drum 1 to increase the service life of the electromagnetic heating device. In other embodiments, there is a gap between the limiting rib 322 and the wire drum 1, and the height of the gap is less than the diameter of the coil 4, so as to ensure that the limiting rib 322 can support the coil 4 and improve the heat dissipation effect of the coil 4.

[0047] In a preferred embodiment, referring to Figures 1 to 4 The side winding area 12 has a side wire pressing rib 121, and the side wire pressing rib 121 has a fixed end fixed to the side winding area 12. The limiting rib 322 extends to the fixed end to increase the structural strength of the limiting rib 322, thereby increasing the supporting effect of the limiting rib 322 on the coil 4, further reducing the stress concentration of the coil 4, thereby reducing the difficulty of assembling the coil 4 and avoiding wire breakage, improving the assembly efficiency of the electromagnetic heating device and reducing the production cost of the electromagnetic heating device. At the same time, it can also increase the connection stability between the side wire pressing rib 121 and the wire drum 1, so as to increase the stability of the coil 4 located in the side winding area 12, thereby increasing the stability of the electromagnetic heating device during operation and the service life of the electromagnetic heating device.

[0048] Preferably, a plurality of side wire pressing ribs 121 are arranged at intervals along the circumference of the wire drum 1 to increase the stability of the coil 4 located in the side winding area 12 and ensure the service life and heating efficiency of the electromagnetic heating device; and the side wire pressing ribs 121 and the connecting column 3 are staggered in the circumferential direction of the wire drum 1 to form an avoidance between the connecting column 3 and the fixed end of the side wire pressing ribs 121.

[0049] In a preferred embodiment, referring to Figure 2 and Figure 3 There is an installation avoidance area 13 between the bottom winding area 11 and the side winding area 12 , and the connecting column 3 also includes a connecting portion 31 located in the installation avoidance area 13 , and the volume of the connecting portion 31 is greater than the volume of the main body 321 .

[0050] That is to say, the cross-sectional area of ​​the connecting portion 31 in a direction perpendicular to the axial direction of the connecting column 3 is larger than the cross-sectional area of ​​the main body 321 in a direction perpendicular to the axial direction of the connecting column 3, so that most of the connecting column 3 is located in the installation avoidance area 13, and a small part of the connecting portion 31 is located in the side winding area 12, so as to ensure that the coil 4 located in the bottom winding area 11 is convenient for winding while ensuring that the area of ​​the side winding area 12 can be used to wind the coil 4, so that the side winding area 12 can wind as many turns of the coil 4 as possible, so as to ensure the heating efficiency and heating uniformity of the electromagnetic heating device.

[0051] The present application does not make any specific limitation on the connection method between the fixed bracket 2 and the connecting column 3. Preferably, the fixed bracket 2 is provided with a fastener, and the fastener thread extends into the connecting column 3 to facilitate the fixation of the fixed bracket 2 and increase the connection stability between the fixed bracket 2 and the wire drum 1.

[0052] The present application does not specifically limit the structure of the fastener. Preferably, the fastener is a screw to facilitate the fixing of the fixing bracket 2, improve the assembly efficiency of the electromagnetic heating device, and reduce the production cost of the electromagnetic heating device. In other implementation examples, the fastener may also be a bolt.

[0053] In other embodiments, a snap-fit ​​structure may be further provided on the connecting column 3 , and a matching structure snap-fitted with the snap-fit ​​structure may be provided on the fixing bracket 2 , so that the fixing bracket 2 and the connecting column 3 are snap-fitted and fixed.

[0054] In a preferred embodiment, the connecting column 3 has a connecting hole, and the connecting hole is provided in the connecting portion 31 .

[0055] Specifically, the connection hole is located on the end surface of the connection portion 31 facing away from the offline disk 1, so that the location of the connection hole is more eye-catching, so that the assembler can quickly find the location of the required installation fastener, thereby improving the assembly efficiency of the assembler on the fixed bracket 2.

[0056] In a preferred embodiment, referring to Figure 1 , Figure 2 and Figure 3 The bottom winding area 11 is provided with a bottom wire pressing rib 111, and the fixed bracket 2 is provided with a bottom magnetic part 21 which is offset from the bottom wire pressing rib 111 to reduce the distance between the bottom magnetic part 21 and the coil 4, thereby ensuring the heating efficiency of the electromagnetic heating device and facilitating the installation and fixation of the fixed bracket 2 to improve the assembly efficiency of the fixed bracket 2 and reduce the production cost of the electromagnetic heating device.

[0057] In a preferred embodiment, referring to Figure 1 , Figure 2 and Figure 3 The side winding area 12 is provided with a side wire pressing rib 121, and the fixed bracket 2 is provided with a side magnetic member 22 which is offset from the side wire pressing rib 121 to improve the magnetic field strength of the electromagnetic heating device, thereby ensuring the heating efficiency of the electromagnetic heating device.

[0058] Further, see Figure 2 , Figure 3 and Figure 4 The fixed bracket 2 is provided with a fixed channel 23, and the wire drum 1 is provided with a limiting channel 122. The limiting channel 122 is located at the edge of the side winding area 12 away from the bottom winding area 11. The two ends of the side magnetic part 22 extend into the fixed channel 23 and the limiting channel 122 respectively, so that the distance between the side magnetic part 22 and the coil 4 located in the side winding area 12 is consistent, so as to ensure the heating efficiency of the electromagnetic heating device and increase the stability of the side magnetic part 22.

[0059] Further, see Figure 1 and Figure 4 The fixed channel 23 is provided with an elastic arm 231, and the elastic arm 231 has an extrusion surface protruding from the channel wall of the fixed channel 23, and the extrusion surface is pressed against the circumferential surface of the side magnetic part 22 to realize the fixed connection between the side magnetic part 22 and the fixed channel 23, so that the assembler can install the side magnetic part 22 to the wire drum 1, thereby improving the assembly efficiency of the assembler for the electromagnetic heating device and reducing the production cost of the electromagnetic heating device.

[0060] The present application does not specifically limit the formation method of the fixed channel 23. Preferably, the end of the fixed bracket 2 close to the side winding area 12 is hollow, so that the end of the fixed bracket 2 forms the fixed channel 23, so as to reduce the production cost of the fixed bracket 2, thereby facilitating the reduction of the production cost of the electromagnetic heating device. In other embodiments, a tubular structure is provided at one end of the fixed bracket 2 close to the side winding area 12, and the fixed channel 23 is formed inside the tubular structure.

[0061] The present application does not specifically limit the formation method of the limiting channel 122. Preferably, the wire drum 1 is provided with a U-shaped rib, and the limiting channel 122 is formed between the U-shaped rib and the wire drum 1 to increase the stability of the limiting channel 122. In other implementation examples, the limiting channel 122 can also be provided with a ridge on the wire drum 1, and the limiting channel 122 is formed inside the ridge.

[0062] In a preferred embodiment, the bottom winding area 11 is provided with a bottom wire pressing rib 111 and a supporting boss corresponding to the bottom wire pressing rib 111 , and a winding space is formed between the supporting boss and the bottom wire pressing rib 111 .

[0063] Specifically, multiple supporting bosses are arranged along the circumference of the wire drum 1. After the coil 4 is wound into the winding space, part of the area of ​​the coil 4 rests on the supporting boss, and there is a gap between the remaining area of ​​the coil 4 and the wire drum 1, so that the heat generated by the coil 4 during operation can be dissipated through the gap between the coil 4 and the wire drum 1, so as to improve the heat dissipation effect of the coil 4 and avoid high temperature of the coil 4, thereby ensuring the normal operation and heating efficiency of the electromagnetic heating device.

[0064] In a preferred embodiment, the width of the support boss is greater than the width of the bottom wire pressing rib 111, so as to increase the contact area between the support boss and the coil 4, thereby reducing the pressure between the coil 4 and the support boss, so as to increase the service life of the coil 4. At the same time, it can also increase the friction between the coil 4 and the support boss, thereby increasing the connection stability between the coil 4 and the support boss, and then increase the stability of the coil 4, so as to ensure the heating efficiency and service life of the electromagnetic heating device, thereby improving the user experience.

[0065] Furthermore, the supporting boss has a supporting plane, and the coil 4 rests on the supporting plane to further increase the contact area between the coil 4 and the supporting boss, thereby increasing the friction between the coil 4 and the supporting boss, increasing the connection stability between the coil 4 and the supporting boss, and at the same time reducing the pressure between the coil 4 and the supporting boss, thereby ensuring the service life of the coil 4 and improving the user experience.

[0066] Furthermore, a transition arc surface is provided at the edge of the supporting boss to make the edge of the supporting boss smoother, so that the coil 4 can smoothly transition at the edge of the supporting boss to avoid damage to the coil 4 at the edge of the supporting boss when the coil 4 is wound, or the coil 4 is deformed under the action of the fixed bracket 2, causing the coil 4 to be broken, thereby reducing the production cost of the electromagnetic heating device and increasing the service life of the electromagnetic heating device; at the same time, it increases the comfort of the assembler touching the edge of the supporting boss, thereby improving the assembly experience of the assembler; in addition, it can also make it easier to demold the wire drum 1, improve the production efficiency of the wire drum 1, and reduce the production cost of the wire drum 1.

[0067] The present application also discloses a cooking utensil, which comprises a pot body and the above-mentioned electromagnetic heating device, wherein the electromagnetic heating device is arranged inside the pot body.

[0068] By adopting the electromagnetic heating device, the situation that the coil is easily broken when assembling the cooking utensil is avoided, thereby improving and reducing the production difficulty and production cost of the electromagnetic heating device, and ensuring the service life of the cooking utensil.

[0069] The present application does not specifically limit the type of cooking appliance, which may be an induction cooker, an electric rice cooker, a pressure cooker, or other kitchen appliances that utilize electromagnetic heating.

[0070] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0071] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0072] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An electromagnetic heating device, comprising a wire drum and a fixing bracket fixed to the wire drum and used to install a magnetic member, wherein the bottom wall of the wire drum has a bottom winding area, and the side wall of the wire drum has a side winding area, characterized in that: A connecting column for fixedly connecting to the fixed bracket is arranged between the side winding area and the bottom winding area, and the connecting column has a contact portion located in the side winding area, and the contact portion includes a main body and a limiting rib arranged on at least one side of the main body and extending along the circumference of the side winding area.

2. An electromagnetic heating device according to claim 1, characterized in that: The connecting column is provided in plurality along the circumference of the wire drum and each of the connecting columns has a contact portion. The limiting rib has a first end connected to the body and a second end opposite to the first end, and the curvature of the first end is smaller than the curvature of the second end.

3. The electromagnetic heating device according to claim 1, characterized in that: The thickness L of the limiting rib satisfies: 0.4mm≤L≤1.5mm; And / or, the height H of the limiting rib satisfies: 2mm≤H≤6mm.

4. The electromagnetic heating device according to claim 1, characterized in that: The side wire winding area has a side wire pressing rib, the side wire pressing rib has a fixed end fixed to the side wire winding area, and the limiting rib extends to the fixed end.

5. The electromagnetic heating device according to claim 1, characterized in that: An installation avoidance area is provided between the bottom winding area and the side winding area, and the connecting column further comprises a connecting portion located in the installation avoidance area, and a volume of the connecting portion is greater than a volume of the main body.

6. The electromagnetic heating device according to claim 5, characterized in that: The connecting column has a connecting hole, and the connecting hole is arranged in the connecting part.

7. The electromagnetic heating device according to claim 1, characterized in that: The bottom winding area is provided with a bottom wire pressing rib, and the fixing bracket is provided with a bottom magnetic piece which is staggered with the bottom wire pressing rib.

8. An electromagnetic heating device according to claim 7, characterized in that: The side winding area is provided with a side wire pressing rib, and the fixing bracket is provided with a side magnetic piece which is staggered with the side wire pressing rib.

9. The electromagnetic heating device according to claim 1, characterized in that: The bottom winding area is provided with a bottom wire pressing rib and a supporting boss corresponding to the bottom wire pressing rib, and a winding space is formed between the supporting boss and the bottom wire pressing rib.

10. A cooking utensil, comprising a pot, characterized in that: It also includes an electromagnetic heating device as described in any one of claims 1 to 9, wherein the electromagnetic heating device is arranged inside the pot body.

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