A heating coil panel and a heater having the same

Abstract

The utility model relates to electromagnetic heating equipment manufacturing technical field, concretely relates to a kind of heating coil disc and the heater with the heating coil disc, heating coil disc includes support, coil, multiple first magnetic core and multiple second magnetic core, coil is installed on support, coil is long strip, the upper end of first magnetic core and second magnetic core is connected with support, first magnetic core and second magnetic core are all located below coil, multiple first magnetic core and multiple second magnetic core are all along the length direction of support interval arrangement, first magnetic core is located in the side of second magnetic core, coil includes multiple conducting wire, the end of conducting wire is sequentially passed multiple first magnetic core after along the length direction of support, again reverse direction sequentially passes multiple second magnetic core until with the other end of conducting wire connection.Heating coil disc is strong in functionality, small in area, radiates fast, can long time heating, magnetic field is strong, efficiency is high, leakage is small, adaptability is strong to various occasions, the heater with the heating coil disc greatly improves the efficiency of food material heating.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic heating equipment manufacturing technology, specifically to a heating coil and a heater having the heating coil. Background Technology

[0002] Traditional induction cooker coils are typically toroidal, with I-shaped magnetic cores distributed across various parts. This layout results in uneven magnetic field strength and an irregular magnetic field distribution. Patent CN200920120489 mentions that the heating coil of a traditional induction cooker consists of a coil wound with copper wire, 6 to 8 ferrite cores of specific specifications, and a support frame, with the entire core resting on the disc support. When the alternating magnetic field generated by the disc acts on the core, the focusing and energy concentration effect is insignificant, leading to uneven heating of the cookware. It also suffers from drawbacks such as a large coil area, weak and unconcentrated magnetic field, resulting in low efficiency during induction heating and significant electromagnetic leakage, limiting its application scenarios. Furthermore, the large coil induction area absorbs heat from the panel and cookware, increasing the difficulty of heat dissipation and preventing the induction cooker from operating at high power continuously. Furthermore, the coil remains stationary during operation, and the heat is mainly concentrated in an area far from the center of the pot. Since this area is not in the center of the food, the center of the pot receives less heat during operation and cannot quickly heat the liquid medium such as oil and water located in the center of the pot, which severely reduces the heat conduction. Summary of the Invention

[0003] To overcome the shortcomings and deficiencies of existing technologies, the purpose of this utility model is to provide a heating coil and a heater incorporating the heating coil. The heating coil is used to heat different types of cooking utensils, offering strong functionality. The coil is elongated, has a small area, dissipates heat quickly, can heat for extended periods, possesses a strong magnetic field, high efficiency, low leakage, and is highly adaptable to various applications. The heater incorporating this heating coil significantly improves the efficiency of food heating.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model provides a heating coil disc, including a bracket, a coil, a plurality of first magnetic cores and a plurality of second magnetic cores. The coil is mounted on the bracket and is elongated. The upper ends of the first and second magnetic cores are connected to the bracket. Both the first and second magnetic cores are located below the coil. The longitudinal cross-section of both the first and second magnetic cores is U-shaped. The plurality of first and second magnetic cores are arranged at intervals along the length of the bracket. The first magnetic cores are located beside the second magnetic cores. The coil includes a plurality of wires. One end of each wire passes through a plurality of first magnetic cores in sequence along the length of the bracket, and then passes through a plurality of second magnetic cores in sequence in the opposite direction until it is connected to the other end of the wire.

[0006] Furthermore, one side of each of the first magnetic cores is interlocked in the gap between the corresponding two second magnetic cores.

[0007] Furthermore, the longitudinal section of the bracket is rectangular or an upward-opening arc.

[0008] Furthermore, the bracket has multiple ventilation holes.

[0009] This utility model also provides a heater, including the aforementioned heating coil, support, mounting base, and drive assembly. The support is connected to the mounting base and is located above the heating coil. The support is used to support cooking utensils. The axis of the support coincides with the axis of the bracket. The bracket is rotatably connected to the mounting base. The drive assembly is used to drive the bracket to rotate around the axis of the support.

[0010] Furthermore, the heater also includes a connector located below the heating coil, the connector being rotatably connected to the mounting base, and two extension arms extending upward from both ends of the connector, the two ends of the bracket being connected to the upper ends of the two extension arms respectively, and the drive assembly being used to drive the connector to rotate.

[0011] Furthermore, the drive assembly includes a drive member, a drive wheel, and a driven wheel that is drivenly connected to the drive wheel. One side of the driven wheel is connected to the lower end of the connector, and the other side of the driven wheel is connected to the mounting base. The drive wheel is connected to the drive member, and the drive member is used to drive the drive wheel to rotate.

[0012] Furthermore, the heater also includes a conductive slip ring, the upper end of which is connected to the lower side of the driven wheel, and the lower end of which is connected to the mounting base.

[0013] Furthermore, both the driving wheel and the driven wheel are gears, and the driving wheel meshes with the driven wheel.

[0014] Furthermore, both the driving wheel and the driven wheel are pulleys, and the driving wheel is connected to the driven wheel via a transmission belt.

[0015] The beneficial effects of this utility model are as follows: The heating coil of this utility model is used to heat different types of cooking utensils, offering strong functionality. The coil is elongated and has a small area, allowing for rapid heat dissipation and prolonged heating. Furthermore, the coil has a first magnetic core and a second magnetic core distributed in its central region, significantly increasing the magnetic field strength in the central area. This concentrated magnetic field results in high efficiency and minimal leakage during induction heating, making it highly adaptable to various applications. Specifically, the heater with this heating coil exhibits a stronger magnetic field in the central region compared to the edges, leading to greater heat intensity at the bottom center of the cooking utensil compared to the edges. This concentration of heat at the bottom center for heating the food significantly improves heating efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the heating coil disk in Example 1.

[0017] Figure 2 This is a front view of the heating coil disc of Example 1.

[0018] Figure 3 This is a three-dimensional structural diagram of the heating coil disk in Example 2.

[0019] Figure 4 This is a front view of the heating coil disc in Example 2.

[0020] Figure 5 This is a three-dimensional structural schematic diagram of the heater with the heating coil disc of Example 1 in Example 3.

[0021] Figure 6 This is a three-dimensional structural schematic diagram of the heater with the heating coil disk of Example 2 in Example 3.

[0022] Figure 7 This is a three-dimensional structural schematic diagram of the heater with the heating coil disc of Example 2 in Example 4.

[0023] The reference numerals in the figures include:

[0024] 1. Bracket; 11. Vent hole; 2. Coil; 21. Wire; 3. First magnetic core; 4. Second magnetic core; 5. Support; 6. Mounting base; 7. Connector; 71. Extension arm; 8. Conductive slip ring; 9. Drive unit; 91. Driving wheel; 92. Driven wheel; 10. Cooking utensil. Detailed Implementation

[0025] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0026] Example 1

[0027] like Figure 1-2 As shown, a heating coil includes a support 1, a coil 2, multiple first magnetic cores 3, and multiple second magnetic cores 4. The coil 2 is mounted on the support 1, which holds the coil 2 in its elongated shape. The upper ends of the first magnetic cores 3 and the second magnetic cores 4 are connected to the support 1. Both the first magnetic cores 3 and the second magnetic cores 4 are located below the coil 2. The longitudinal sections of both the first magnetic cores 3 and the second magnetic cores 4 are U-shaped, with their openings facing upwards. The multiple first magnetic cores 3 and the multiple second magnetic cores 4 are arranged at intervals along the length of the support 1, meaning there is a gap between adjacent first magnetic cores 3. A gap is left between the two second magnetic cores 4. The first magnetic core 3 is located beside the second magnetic core 4. The coil 2 includes multiple wires 21. One end of the wire 21 passes through multiple first magnetic cores 3 in sequence along the length direction of the bracket 1, and then passes through multiple second magnetic cores 4 in sequence in the opposite direction until it is connected to the other end of the coil 2. That is, each wire 21 includes a first wire body and a second wire body. One end of the first wire body passes through multiple first magnetic cores 3 in sequence until it is connected to one end of the second wire body. The other end of the second wire body passes through multiple second magnetic cores 4 in sequence until it is connected to the other end of the first wire body. A gap is left between the first wire body and the second wire body.

[0028] The heating coil provided in this embodiment is used to heat different types of cooking utensils 10. It is highly functional. The coil 2 is elongated, small in area, and dissipates heat quickly, allowing for prolonged heating. It has a strong magnetic field, high efficiency, low leakage, and strong adaptability to various situations. Simultaneously, the first magnetic core 3 and the second magnetic core 4 are distributed in the middle of the coil 2, while the two ends of the coil 2 do not have the first magnetic core 3 and the second magnetic core 4. This significantly increases the magnetic field strength in the middle region of the coil 2, concentrating the magnetic field in the middle area, resulting in high efficiency during induction heating. In use, the coil 2 generates an alternating magnetic field when energized. Because the longitudinal cross-section of both the first magnetic core 3 and the second magnetic core 4 is U-shaped (i.e., both the first magnetic core 3 and the second magnetic core 4 are U-shaped cores), the magnetic field generated by the current flowing through the first magnetic core 3 is concentrated and penetrates the cooking utensils 10 containing conductive materials, forming a closed magnetic circuit. At the same time, the magnetic field generated by the current flowing through the second magnetic core 4 is concentrated and penetrates the cooking utensils 10 containing conductive materials, forming a closed magnetic circuit. This results in less magnetic leakage at the edges of the magnetic field in the middle region of the coil 2 and better uniformity.

[0029] Furthermore, the coil 2 can be installed on the upper or lower end face of the bracket 1, depending on the requirements. In this embodiment, the coil 2 is installed on the lower end face of the bracket 1, and the first magnetic core 3 and the second magnetic core 4 are both located below the coil 2. The first wire is located inside the opening of the first magnetic core 3, and the second wire is located inside the opening of the second magnetic core 4, resulting in a simple structure.

[0030] Furthermore, one side of each of the first magnetic cores 3 is interlocked in the gap between the corresponding two second magnetic cores 4. The staggered arrangement of the first magnetic cores 3 and the second magnetic cores 4 saves the area occupied by the heating coil. While ensuring that the first magnetic cores 3 and the second magnetic cores 4 are large enough to accommodate more magnetic fields without easily becoming saturated, it also allows the coil 2 to be arranged in a long strip shape.

[0031] Furthermore, the bracket 1 has multiple ventilation holes 11. The ventilation holes 11 are used to dissipate the heat generated by the coil 2 during operation, thereby extending the service life of the coil 2.

[0032] Furthermore, the longitudinal section of the support 1 is an upward-opening arc shape to fit the cooking utensil 10, such as a round-bottomed wok, an arc-shaped soup pot, or a milk pot, which has an arc-shaped bottom. Correspondingly, the longitudinal section of the coil 2 is also an upward-opening arc shape.

[0033] Example 2

[0034] like Figure 3-4 As shown, in this embodiment, unlike embodiment 1, the longitudinal section of the support 1 is rectangular, to fit the cooking utensil 10, such as a frying pan, a square stew pot / steamer, a frying pan, a tea stove, etc., which has a rectangular longitudinal section at its bottom. Correspondingly, the longitudinal section of the coil 2 is also rectangular.

[0035] Example 3

[0036] like Figure 5-6 As shown, this embodiment provides a heater, including a heating coil of embodiment 1 or 2, a support 5, a mounting base 6, and a drive assembly. The support 5 is connected to the mounting base 6 and is located above the heating coil. The support 5 is used to support the cooking utensil 10. The axis of the support 5 coincides with the axis of the bracket 1. The bracket 1 is rotatably connected to the mounting base 6. The drive assembly is used to drive the bracket 1 to rotate around the axis of the support 5.

[0037] This embodiment provides a heater with a simple structure. When the coil 2 operates, it rotates around the center of the cookware 10 and also rotates along the same axis as the support 5. Specifically, the coil 2 rotates around the axis of the cookware 10. During this rotation, the magnetic field strength in the central region of the coil 2 is stronger than that in the edge regions. Therefore, the average heating time in the central region of the cookware 10 is longer and the heating intensity is higher compared to the edge regions. In other words, the average heating time of the coil 2 gradually shortens and the heating intensity gradually weakens from the center region to the edge region, thus achieving higher heat levels closer to the center of the cookware 10. Since food generally gathers at the center of the bottom of the cookware 10, when cooking food using the heater of this embodiment, the heating intensity at the center of the bottom of the cookware 10 is stronger than that at the edge regions. The heat of the cookware 10 is concentrated at the bottom center to heat the food, which can concentrate more heat in the area where the food is concentrated, greatly improving the heating efficiency and energy utilization. Furthermore, the change in heating intensity from the center region to the edge region of the cookware 10 is continuous with each rotation of the coil 2, exhibiting high stability.

[0038] Furthermore, the heater also includes a connector 7 located below the heating coil. The connector 7 is rotatably connected to the mounting base 6. Two extension arms 71 extend upward from both ends of the connector 7. Both ends of the bracket 1 are connected to the upper ends of the two extension arms 71, that is, the upper end of the extension arm 71 is connected to the end of the bracket 1, and the lower end of the extension arm 71 is connected to the connector 7. The driving assembly is used to drive the connector 7 to rotate. The structure is simple, and the connector 7 makes the rotation of the bracket 1 more stable.

[0039] Furthermore, the drive assembly includes a drive component 9, a drive wheel 91, and a driven wheel 92 that is pulverizedly connected to the drive wheel 91. One side of the driven wheel 92 is connected to the lower end of the connecting component 7, and the other side of the driven wheel 92 is connected to the mounting base 6. The drive wheel 91 is connected to the drive component 9, and the drive component 9 is connected to the mounting base 6. The drive component 9 is used to drive the drive wheel 91 to rotate. In this embodiment, the drive component 9 is a motor.

[0040] In this embodiment, both the driving wheel 91 and the driven wheel 92 are gears, and the driving wheel 91 meshes with the driven wheel 92, resulting in stable operation.

[0041] Furthermore, the heater also includes a conductive slip ring 8, the upper end of which is connected to the lower side of the driven wheel 92, the upper side of the driven wheel 92 is connected to the connector 7, and the lower end of the conductive slip ring 8 is connected to the mounting base 6. The coil 2 is connected to an external control device via the connector 7, the driven wheel 92, the conductive slip ring 8, and the mounting base 6 in sequence, thus avoiding cable tangling or breakage caused by rotation.

[0042] Example 4

[0043] like Figure 7 As shown, unlike Embodiment 3, both the driving wheel 91 and the driven wheel 92 in this embodiment are pulleys. The driving wheel 91 is connected to the driven wheel 92 via a transmission belt, resulting in a simple structure.

[0044] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A heating coil, characterized in that: The device includes a support (1), a coil (2), multiple first magnetic cores (3) and multiple second magnetic cores (4). The coil (2) is mounted on the support (1) and is elongated. The upper ends of the first magnetic cores (3) and the second magnetic cores (4) are connected to the support (1). The first magnetic cores (3) and the second magnetic cores (4) are both located below the coil (2). The longitudinal sections of the first magnetic cores (3) and the second magnetic cores (4) are both U-shaped. The multiple first magnetic cores (3) and the multiple second magnetic cores (4) are arranged at intervals along the length of the support (1). The first magnetic cores (3) are located beside the second magnetic cores (4). The coil (2) includes multiple wires (21). One end of the wire (21) passes through multiple first magnetic cores (3) in sequence along the length of the support (1) and then passes through multiple second magnetic cores (4) in the opposite direction until it is connected to the other end of the wire (21).

2. The heating coil disc according to claim 1, characterized in that: One side of each of the first magnetic cores (3) is inserted into the gap between the corresponding two second magnetic cores (4).

3. The heating coil disc according to claim 1, characterized in that: The longitudinal section of the bracket (1) is rectangular or an upward-opening arc.

4. The heating coil disc according to claim 1, characterized in that: The bracket (1) has multiple ventilation holes (11).

5. A heater, characterized in that: The device includes a heating coil, a support (5), a mounting base (6), and a drive assembly as described in any one of claims 1-4. The support (5) is connected to the mounting base (6) and is located above the heating coil. The support (5) is used to support a cooking utensil (10). The axis of the support (5) coincides with the axis of the bracket (1). The bracket (1) is rotatably connected to the mounting base (6). The drive assembly is used to drive the bracket (1) to rotate around the axis of the support (5).

6. The heater according to claim 5, characterized in that: It also includes a connector (7) located below the heating coil, the connector (7) being rotatably connected to the mounting base (6), the two ends of the connector (7) extending upwards with two extension arms (71), the two ends of the bracket (1) being connected to the upper ends of the two extension arms (71), and the driving assembly being used to drive the connector (7) to rotate.

7. The heater according to claim 5, characterized in that: The drive assembly includes a drive member (9), a drive wheel (91), and a driven wheel (92) that is connected to the drive wheel (91). One side of the driven wheel (92) is connected to the lower end of the connector (7), and the other side of the driven wheel (92) is connected to the mounting base (6). The drive wheel (91) is connected to the drive member (9), and the drive member (9) is used to drive the drive wheel (91) to rotate.

8. The heater according to claim 5, characterized in that: It also includes a conductive slip ring (8), the upper end of which is connected to the lower side of the driven wheel (92), and the lower end of which is connected to the mounting base (6).

9. The heater according to claim 7, characterized in that: Both the driving wheel (91) and the driven wheel (92) are gears, and the driving wheel (91) meshes with the driven wheel (92).

10. The heater according to claim 7, characterized in that: Both the driving wheel (91) and the driven wheel (92) are pulleys, and the driving wheel (91) is connected to the driven wheel (92) via a transmission belt.

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