An electromagnetic heating device applied to a smart cooking device

Abstract

An electromagnetic heating device applied to an intelligent cooking equipment, comprising a heating bin, the heating bin comprising a first half shell and a second half shell, the first half shell and the second half shell are combined and fixed together, an outer wall of the first half shell is provided with an upper winding area, an outer wall of the second half shell is provided with a lower winding area, a continuous coil is wound in the upper winding area and the lower winding area, and a winding density of the coil in the lower winding area is greater than a winding density of the coil in the upper winding area. The utility model replaces the traditional two sets of independent control systems by a single coil and a set of IH control system, effectively reduces the hardware cost and control complexity of the electromagnetic heating device, and when the heating bin rotates, even if the upper and lower positions are reversed, a part with original larger power (the second half shell) can still provide strong heating, and a part with original smaller power (the first half shell) can also provide auxiliary heating, effectively avoiding heating "cold surface", and ensuring uniform heating and frying quality of dishes.

Description

Technical Field

[0001] This utility model relates to the field of intelligent cooking equipment technology, and specifically to an electromagnetic heating device applied to intelligent cooking equipment. Background Technology

[0002] The heating chamber is one of the core components of intelligent cooking equipment, which heats and cooks the food inside the container by rotating. Referring to the patent technology solution in application number 202420119014.4, existing heating chambers typically have two coil assemblies arranged vertically. Since the food is mainly heated through the lower coil assembly during cooking, and the upper coil assembly is only heated briefly (1-2 seconds) after the heating chamber rotates, it is usually necessary to control the power to ensure that the lower coil assembly has a higher heating efficiency than the upper one. In this case, each coil assembly needs to be equipped with an independent induction heating (IH) control system. This method allows independent control of the coils of both coil assemblies, so that even when the heating chamber rotates and the two coil assemblies are reversed, the upper coil can still provide brief heating, thus avoiding a "cold surface" inside the heating chamber and ensuring the quality and even heating of the dish.

[0003] However, using two independent IH control systems increases the complexity of the heating chamber system, the number of components, and the control logic, resulting in high costs and hindering product cost control. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides an electromagnetic heating device for use in intelligent cooking equipment.

[0005] The technical solution adopted by this utility model to solve its technical problem is: An electromagnetic heating device for use in intelligent cooking equipment includes a heating chamber, which comprises a first half-shell and a second half-shell, the first half-shell and the second half-shell being combined and fixed together. The first half-shell has an upper winding region on its outer wall, and the second half-shell has a lower winding region on its outer wall. A continuous coil is wound in both the upper winding region and the lower winding region, and the winding density of the coil in the lower winding region is greater than the winding density in the upper winding region.

[0006] In this invention, the upper winding region covers part or all of the top wall and left and right side walls of the first half-shell, and the lower winding region covers part or all of the bottom wall and left and right side walls of the second half-shell.

[0007] In this invention, the upper winding region is provided with a plurality of upper winding layers arranged sequentially from the inside to the outside, and the lower winding region is provided with a plurality of lower winding layers arranged sequentially from the inside to the outside. The coil is continuously wound in the upper winding layers and the lower winding layers.

[0008] In this invention, at least the inner and outer adjacent upper winding layers are interconnected, and at least the inner and outer adjacent lower winding layers are interconnected.

[0009] In this invention, the upper winding area is provided with an upper winding avoidance area corresponding to the corner between the top wall and the side wall of the first half-shell, and the lower winding area is provided with a lower winding avoidance area corresponding to the corner between the bottom wall and the side wall of the second half-shell.

[0010] In this invention, the number of turns of the coil in at least a portion of the lower winding layer is greater than the number of turns in the corresponding upper winding layer, and / or, at least a portion of the upper winding layer is not wound with a coil.

[0011] In this invention, the upper winding region has a first protruding structure on the top and side walls of the first half-shell, and the upper winding layer is a first annular groove recessed on the first protruding structure.

[0012] In this invention, the first annular groove is provided with a first corner protrusion for limiting the coil from coming out and / or a first inner limiting protrusion for clamping the coil.

[0013] In this invention, the lower winding region has a second protruding structure on the bottom and side walls of the second half-shell, and the lower winding layer is a second annular groove recessed on the second protruding structure.

[0014] In this invention, the second annular groove is provided with a second corner protrusion for limiting the coil from coming out and / or a second inner limiting protrusion for clamping the coil.

[0015] The beneficial effects of this invention are as follows: This invention cleverly achieves power distribution by using a continuous coil wound together in both the upper and lower winding regions, with the coil's winding density in the lower region being greater than that in the upper region. This allows the invention to replace the traditional two independent control systems with a single coil and a single IH control system, effectively reducing the hardware cost and control complexity of the electromagnetic heating device. Moreover, when the heating chamber rotates, even if the vertical positions are reversed, the part with higher original power (the second half-shell) can still provide strong heating, while the part with lower original power (the first half-shell) can still provide auxiliary heating, effectively avoiding "cold surface" heating and ensuring uniform heating and cooking quality of the dishes. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the coil on the heating chamber; Figure 2 This is a top view of the heating chamber; Figure 3 Three-dimensional heating chamber Figure 1 ; Figure 4 Three-dimensional heating chamber Figure 2 ; Figure 5 Three-dimensional electromagnetic heating device Figure 1 ; Figure 6 Three-dimensional electromagnetic heating device Figure 2 ; Figure 7 Exploded view of the installation ring and heating chamber; Figure 8 This is a schematic diagram of the interior of the heating chamber. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0018] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0019] Furthermore, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection using welding, a detachable connection using bolts, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0021] Reference Figure 1-8 An electromagnetic heating device for use in intelligent cooking equipment includes a heating chamber and a drive device 1 for rotating the heating chamber. The rotation output end of the drive device 1 is connected to the heating chamber via a transmission connection. The heating chamber includes a first half-shell 2 and a second half-shell 3, wherein the first half-shell 2 serves as an upper winding reel and the second half-shell 3 serves as a lower winding reel. The first half-shell 2 and the second half-shell 3 are combined and fixed together by bolt connection. The inner cavity of the first half-shell 2 and the inner cavity of the second half-shell 3 form a heating chamber for placing a lunchbox.

[0022] Furthermore, the outer wall of the first half-shell 2 is provided with an upper winding region 21, and the outer wall of the second half-shell 3 is provided with a lower winding region 31. A continuous coil 4 is wound together in the upper winding region 21 and the lower winding region 31. The winding density of the coil 4 in the lower winding region 31 is greater than the winding density in the upper winding region 21. This structure is achieved by winding coil 4 with different numbers of turns in different winding layers. When the heating chamber is working, it only needs to be connected to an IH control system. Even if the vertical position is reversed when the cooking chamber rotates, the original second half-shell 3 always has a high power, which can ensure that there is sufficient power to heat the food at any time, effectively eliminating cold food and ensuring the quality of cooking.

[0023] In this embodiment, the upper winding region 21 covers part or all of the top wall and left and right side walls of the first half-shell 2, and the lower winding region 31 covers part or all of the bottom wall and left and right side walls of the second half-shell 3, so that the coil 4 surrounds most of the area of ​​the first half-shell 2 and the second half-shell 3, ensuring a comprehensive heating range.

[0024] In this embodiment, the upper winding region 21 has multiple upper winding layers 22 arranged sequentially from the inside to the outside, and the lower winding region 31 has multiple lower winding layers 32 arranged sequentially from the inside to the outside. The coil 4 is continuously wound within the upper winding layers 22 and the lower winding layers 32, thereby using the upper winding layers 22 and the lower winding layers 32 to position the coil 4 and ensure the stability and uniformity of the coil 4 during the winding process. At least the inner and outer adjacent upper winding layers 22 are interconnected, and at least the inner and outer adjacent lower winding layers 32 are interconnected, thereby enabling the coil 4 to be wound continuously without interruption and reducing additional connections.

[0025] In this embodiment, the number of turns of the coil 4 in at least a portion of the lower winding layer 32 is greater than the number of turns in the corresponding upper winding layer 22, and at least a portion of the upper winding layer 22 is not wound with the coil 4. Specifically, both the upper winding layer 22 and the lower winding layer 32 have 17 layers. Different winding densities are achieved by setting different numbers of turns in different winding layers: In the 17 lower winding layers 32 of the second half-shell 3, layers 1 to 9 and layers 12 to 16 each have 2 turns of coil 4, and layers 10, 11, and 17 each have 1 turn of coil 4; In the 17 upper winding layers 22 of the first half-shell 2, layers 1 to 4, layers 6, 7, 9, 11, 12, 13, 14, and 15 each have 1 turn of coil 4, and layers 5, 8, 10, 16, and 17 do not have coil 4 wound. This makes the overall winding density and total length of coil 4 in the lower winding region 31 much greater than that in the upper winding region 21. When the coil 4 is connected to AC power, the induction heating power generated in the part of the second half-shell 3 corresponding to the high winding density is large, while the power generated in the part of the first half-shell 2 corresponding to the low winding density is small. Through calculation and actual measurement, the power ratio between the upper and lower halves can be stabilized at approximately 1:4 (e.g., 250W for part 2 of the first half-shell and 1000W for part 3 of the second half-shell), thereby satisfying the differentiated distribution of heating power.

[0026] In this embodiment, the upper winding region 21 is provided with an upper winding avoidance region 23 corresponding to the corner between the top wall and the side wall of the first half-shell 2, and the lower winding region 31 is provided with a lower winding avoidance region 33 corresponding to the corner between the bottom wall and the side wall of the second half-shell 3. Neither the upper winding avoidance region 23 nor the lower winding avoidance region 33 is wound with coil 4, so as to avoid the coil 4 from accumulating at the corner, causing local overheating or uneven electromagnetic field distribution.

[0027] In this embodiment, the upper winding region 21 has a first protruding structure on the top and side walls of the first half-shell 2, and the upper winding layer 22 is a first annular groove recessed in the first protruding structure. Further, a first corner protrusion 24 for limiting the coil 4 from dislodging is provided within the first annular groove, and the first corner protrusion 24 is located at the corner of the first annular groove; simultaneously, a first inner limiting protrusion 25 for clamping the coil 4 is provided on the side wall of the first annular groove, effectively preventing the coil 4 from shifting or loosening during winding or use. Similarly, the lower winding region 31 has a second protruding structure on the bottom and side walls of the second half-shell 3, and the lower winding layer 32 is a second annular groove recessed in the second protruding structure. Furthermore, the second annular groove is provided with a second corner protrusion 34 for limiting the coil 4 from coming out, and the second corner protrusion 34 is located at the corner of the second annular groove; at the same time, the groove sidewall of the second annular groove is provided with a second inner limiting protrusion 35 for clamping the coil 4, which effectively prevents the coil 4 from shifting or loosening during winding or use.

[0028] In this embodiment, the electromagnetic heating device further includes a mounting ring 5. The outer circumferential surface of the mounting ring 5 is a circular circumferential surface 51 for contacting the auxiliary roller. The inner ring of the mounting ring 5 is provided with a turntable insertion hole 52 and a turntable through hole 53 coaxially arranged with the mounting ring 5. A circular stop surface is provided between the turntable insertion hole 52 and the turntable through hole 53. The front end of the first half-shell 2 is integrally provided with a first arcuate protrusion 26, and the front end of the second half-shell 3 is integrally provided with a second arcuate protrusion 36. The first arcuate protrusion 26 and the second arcuate protrusion 36 are... The arc-shaped protrusions 36 combine to form a mating ring that fits into the turntable insertion hole 52. When the mating ring is inserted into the turntable insertion hole 52 and its front end abuts against the ring stop surface, the mating ring cannot continue to be inserted further into the turntable insertion hole 52. At this point, the outer wall of the mating ring contacts the hole wall of the turntable insertion hole 52, and the turntable through hole 53 is aligned with the inner ring of the mating ring. Then, the first half-shell 2 and the second half-shell 3 are both fixedly connected to the mounting ring 5 by bolts, thereby achieving synchronous rotation of the heating chamber and the mounting ring 5. When the electromagnetic heating device is installed on the housing of the intelligent cooking equipment, the contact between the mounting ring 5 and the auxiliary roller reduces frictional wear on the auxiliary roller, improving the stability of the heating chamber's rotation and effectively extending the service life of the auxiliary roller.

[0029] In this embodiment, a heat insulation panel 6 is provided inside the heating chamber. The heat insulation panel 6 is preferably a microcrystalline panel. The heat insulation panel 6 can provide a certain degree of insulation between the lunch box and the heating chamber, so as to prevent the internal structure of the heating chamber from being damaged when the heat of the lunch box is too high.

[0030] In this embodiment, a temperature sensor 7 is provided on the heating chamber to monitor the temperature change inside the heating chamber in real time and feed the temperature data back to the IH control system, thereby improving the control accuracy of the electromagnetic heating device and ensuring the heating quality of the food box to be heated by each electromagnetic heating device.

[0031] In this embodiment, a magnetic block module 8 is provided on the outer wall of the heating chamber. The magnetic block module 8 can be used in conjunction with the electromagnetic coil 4 to increase inductance, reduce magnetic leakage, and improve heating uniformity and heating efficiency.

[0032] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. An electromagnetic heating device for use in intelligent cooking equipment, comprising a heating chamber, the heating chamber comprising a first half-shell (2) and a second half-shell (3), the first half-shell (2) and the second half-shell (3) being fixed together, characterized in that: The outer wall of the first half-shell (2) is provided with an upper winding area (21), and the outer wall of the second half-shell (3) is provided with a lower winding area (31). A continuous coil (4) is wound together in the upper winding area (21) and the lower winding area (31). The winding density of the coil (4) in the lower winding area (31) is greater than the winding density in the upper winding area (21).

2. The electromagnetic heating device applied to intelligent cooking equipment according to claim 1, characterized in that: The upper winding area (21) covers part or all of the top wall and left and right side walls of the first half-shell (2), and the lower winding area (31) covers part or all of the bottom wall and left and right side walls of the second half-shell (3).

3. An electromagnetic heating device for use in intelligent cooking equipment according to claim 1 or 2, characterized in that: The upper winding region (21) has multiple upper winding layers (22) arranged sequentially from the inside to the outside, and the lower winding region (31) has multiple lower winding layers (32) arranged sequentially from the inside to the outside. The coil (4) is continuously wound in the upper winding layer (22) and the lower winding layer (32).

4. The electromagnetic heating device for use in intelligent cooking equipment according to claim 3, characterized in that: At least the inner and outer adjacent upper winding layers (22) are interconnected, and at least the inner and outer adjacent lower winding layers (32) are interconnected.

5. An electromagnetic heating device for use in intelligent cooking equipment according to claim 3, characterized in that: The upper winding area (21) is provided with an upper winding avoidance area (23) corresponding to the corner between the top wall and the side wall of the first half shell (2), and the lower winding area (31) is provided with a lower winding avoidance area (33) corresponding to the corner between the bottom wall and the side wall of the second half shell (3).

6. The electromagnetic heating device for use in intelligent cooking equipment according to claim 3, characterized in that: The coil (4) has more turns in at least a portion of the lower winding layer (32) than in the corresponding upper winding layer (22), and / or, at least a portion of the upper winding layer (22) does not have the coil (4) wound.

7. An electromagnetic heating device for use in intelligent cooking equipment according to claim 3, characterized in that: The upper winding region (21) has a first protruding structure on the top and side walls of the first half-shell (2), and the upper winding layer (22) is a first annular groove recessed on the first protruding structure.

8. An electromagnetic heating device for use in intelligent cooking equipment according to claim 7, characterized in that: The first annular groove is provided with a first corner protrusion (24) for limiting the coil (4) from coming out and / or a first inner limiting protrusion (25) for clamping the coil (4).

9. An electromagnetic heating device for use in intelligent cooking equipment according to claim 3, characterized in that: The lower winding region (31) has a second protruding structure on the bottom and side walls of the second half shell (3), and the lower winding layer (32) is a second annular groove recessed on the second protruding structure.

10. An electromagnetic heating device for use in intelligent cooking equipment according to claim 9, characterized in that: The second annular groove is provided with a second corner protrusion (34) for limiting the coil (4) from coming out and / or a second inner limiting protrusion (35) for clamping the coil (4).

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