A coil support for an IH device

Abstract

The application relates to a coil disc support for an IH device, which comprises an outer ring support and an inner ring support, a plurality of supporting ribs arranged between the outer ring support and the inner ring support, a plurality of first heat dissipation holes formed between the supporting ribs, a coil disc winding area formed between the outer ring support and the inner ring support at the upper end of the supporting ribs, and a first hollow cavity provided at the back of the supporting ribs and capable of inlaying a magnetic strip, so that the overall heat dissipation capacity is effectively improved, the stable performance of the coil disc and the magnetic strip during long-time work is maintained, and the service life is prolonged.

Description

Technical Field

[0001] This application relates to the field of electromagnetic heating technology, specifically to the field of coil plate support technology for IH equipment. Background Technology

[0002] With the changing lifestyles of people, home appliances are developing towards miniaturization, lightweighting, intelligence, and high cost-effectiveness. In the field of kitchen appliances, products that use induction heating (IH) technology, such as induction cookers, IH rice cookers, and IH kettles, have higher requirements for the efficiency and cost of their coil heating systems.

[0003] In IH heating equipment, the core heating components—the coil, its supporting structure, and magnetic materials—account for a significant portion of the overall cost. This is especially true in miniaturized appliances, where limited internal space often leads to the use of large amounts of magnetic material in the coil support, making it difficult to control overall manufacturing costs and limiting the product's market competitiveness. Furthermore, it can raise concerns about electromagnetic radiation for users.

[0004] Therefore, there is an urgent need for a coil support structure suitable for small IH equipment that can simplify the structure, save materials, facilitate assembly, and improve cost performance while meeting basic performance requirements such as heating efficiency and mechanical strength. Summary of the Invention

[0005] In response to the aforementioned problems, this application proposes a coil tray bracket for IH equipment, aiming to achieve a good balance between cost and efficiency in a compact structure through optimized design of the overall coil tray bracket.

[0006] To achieve the above objectives, the present application adopts the following technical solution:

[0007] A coil support for an IH device includes an outer ring frame and an inner ring frame, and a plurality of support ribs disposed between the outer ring frame and the inner ring frame. A plurality of first heat dissipation holes are formed between the support ribs, and a coil winding area is formed at the upper end of the support ribs between the outer ring frame and the inner ring frame.

[0008] The back of the support rib is provided with a first hollow cavity into which a magnetic strip can be embedded.

[0009] Thus, by first setting multiple support ribs between the outer ring frame and the inner ring frame, a stable winding area is provided for the coil. At the same time, heat dissipation holes are formed between the ribs, which effectively improves the overall heat dissipation capacity, helps maintain the stability of the coil and magnetic strip under long-term operation, and extends the service life.

[0010] Furthermore, the back of the support rib is provided with a first hollow cavity for embedding magnetic strips. The integrated fusion of structural components and functional components saves internal space. Combined with the design of heat dissipation holes, the manufacturing cost is significantly reduced while ensuring basic performance.

[0011] In some possible implementations, the outer ring frame is provided with a support column at the connection point with the support rib, and the support column is provided with a second hollow cavity communicating with the first hollow cavity.

[0012] In some possible implementations, the support rib includes a first support rib whose two ends are directly connected to the outer ring frame and the inner ring frame, and a second support rib whose section is connected to the outer ring frame and whose other end is disposed between adjacent first support ribs.

[0013] In some possible implementations, a second heat dissipation hole is formed between the inner ring frame and the second support rib and two adjacent first support ribs.

[0014] In some possible implementations, the inner ring frame has a third hollow cavity at the connection point with the first support rib, and the third hollow cavity communicates with the first hollow cavity.

[0015] In some possible implementations, there are six first support ribs and six second support ribs.

[0016] In some possible implementations, a connecting plate is provided between at least one adjacent support rib, the connecting plate having an inner wire clamp for securing the inner coil power wire of the coil disc.

[0017] In some possible implementations, the inner clamp is located on the back of the connecting plate.

[0018] In some possible implementations, an outer wire clamp is also provided on the outer ring frame, the outer wire clamp being disposed on the connecting plate corresponding to the outer ring frame.

[0019] In some possible implementations, a plurality of fixed posts are also provided on the outer periphery of the outer ring frame.

[0020] In some possible implementations, a first magnetic strip pre-installed on the first support rib and a second magnetic strip pre-installed on the second support rib are also included, wherein the magnetic permeability of the second magnetic strip is higher than that of the first magnetic strip. Attached Figure Description

[0021] Figure 1 This is a top view of the coil support of this application;

[0022] Figure 2 This is a schematic diagram of the back of the coil support in this application;

[0023] Figure 3This is a cross-sectional view of the coil support of this application;

[0024] Figure 4 This is a schematic diagram of the back of the coil support bracket of this application in the pre-installed magnetic strip state;

[0025] Figure 5 This is a schematic diagram of the magnetic stripe in the ready-to-install state in this application;

[0026] Figure 6 This is a top view of the coil disk and magnetic strip of the coil disk bracket in the present application, in their pre-assembled state;

[0027] Figure 7 yes Figure 1 Enlarged view of a portion of point A in the middle;

[0028] Figure 8 yes Figure 6 Enlarged view of section B in the middle. Detailed Implementation

[0029] The following examples further illustrate the features of this application and other related features in detail, so as to facilitate understanding by those skilled in the art:

[0030] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions in the attached diagrams, while the terms “bottom surface,” “top surface,” “inner,” and “outer” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0031] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this case based on the specific circumstances.

[0032] The coil holder for IH equipment disclosed in this application is a product applied to IH heating technology such as induction cookers. Its specific application scope can be induction cookers, electric kettles, rice cookers, and water boiling devices on coffee tables. This application does not make any specific limitations in this regard.

[0033] Please refer to Figure 1 and Figure 6The coil support of this application includes an outer ring frame 1 and an inner ring frame 2, which are coaxial annular frames, forming a hollow annular space between them. Multiple support ribs 3 are provided in this annular space, between the outer ring frame 1 and the inner ring frame 2, with the height of the support ribs 3 lower than that of the outer ring frame 1 and the inner ring frame 2. Multiple first heat dissipation holes 31 are formed between the support ribs 3, and a coil 100 winding area is formed at the upper end of the support ribs 3 between the outer ring frame 1 and the inner ring frame 2. The coil 100 is formed by winding in layers in annular shape, ultimately forming a thin disc-like structure, a common technique in the industry, and will not be described in detail here.

[0034] At this point, the conventional approach in existing technology is to lay magnetic materials, such as commonly used ferrites, across the entire back of the coil support. However, this approach easily leads to an increase in temperature, causing the resistivity of the conductor material to increase. Under the same current, the coil 100 will generate more Joule heat, resulting in additional energy loss. At the same time, if the temperature continues to rise, the magnetic permeability of the material will slowly decrease, and the heating efficiency will also decrease accordingly.

[0035] One effective measure to address this is to optimize the distribution of the magnetic material while also considering heat dissipation. Please refer to [reference needed]. Figures 2 to 4 and Figure 8 A first hollow cavity 32 for embedding a magnetic strip 4 is provided on the back of the support rib 3. Specifically, in one embodiment, the support rib 3 includes a first support rib 301 with both ends directly connected to the outer ring frame 1 and the inner ring frame 2, and a second support rib 302 with one end connected to the outer ring frame 1 and the other end disposed between adjacent first support ribs 301. That is, the first support rib 301 is arranged in a ring around the outer periphery of the inner ring frame 2, while the second support rib 302 spans the acute angle formed by two adjacent first support ribs 301 on the inner periphery. At this time, a second heat dissipation hole 33 is formed between the inner ring frame 2 and the second support rib 302 and between the two adjacent first support ribs 301. In this way, the magnetic strip 4, which is separated by the first heat dissipation hole 31, can achieve a balance between magnetic conduction and heat dissipation effects while significantly reducing manufacturing costs. Furthermore, the second heat dissipation hole 33 can provide localized heat dissipation to the central part where heat is concentrated, making the overall heating effect more uniform. In one embodiment, the number of the first support rib 301 and the second support rib 302 are six each, so that heat dissipation and magnetic conductivity balance are at an efficient level.

[0036] Thus, by first setting multiple support ribs 3 between the outer ring frame 1 and the inner ring frame 2, a stable winding area is provided for the coil. At the same time, heat dissipation holes are formed between the ribs, which effectively improves the overall heat dissipation capacity and helps maintain the stable performance of the coil disc 100 and the magnetic strip 4 under long-term operation, thus extending their service life.

[0037] Furthermore, the back of the support rib 3 is provided with a first hollow cavity 31 for embedding magnetic strips. The integration of structural components and functional components saves internal space. Combined with the design of heat dissipation holes, the manufacturing cost is significantly reduced while ensuring basic performance.

[0038] Furthermore, in specific applications, the coverage area of ​​the coil disk 100 is located between the outer side of the second heat dissipation hole 33 and the inner ring of the outer ring frame 1, that is, covering the second support rib 302. To further consider manufacturing costs, a second magnetic strip 42 is provided on the second support rib 302, which is completely covered by the coil disk 100. This second magnetic strip is made of high-quality virgin soft magnetic material, which has high permeability and low loss. Meanwhile, a first magnetic strip 41 is provided on the first support rib 301, made of recycled soft magnetic material. Recycled material, due to its low cost, has lower permeability and greater magnetic performance fluctuations compared to virgin soft magnetic material. By alternating the first magnetic strip 41 and the second magnetic strip 42, the impact of these magnetic performance fluctuations can be buffered and compensated for.

[0039] Please refer to Figure 5 , Figure 6 and Figure 8 In existing technologies, there is a radiation hazard on the outer periphery of the coil disk 100. To address this, the outer ring frame 1 of this application has a support column 11 at the connection point of the support rib 3. This support column 11 has a second hollow cavity 12 communicating with the first hollow cavity 32. The support column 11 extends beyond the support rib 3 and also exceeds the height of the coil disk 100 after the coil is wound. Extending the magnetic strip 4 outwards and embedding it into the second hollow cavity 12 creates a radiation shielding layer on the outer periphery of the coil disk 100, while also enhancing the magnetic permeability of the outer periphery, improving heating efficiency, and making the overall heating of the coil disk 100 more uniform. In this case, the magnetic strip 4 comprises a first magnetic strip 41 and a second magnetic strip 42.

[0040] Furthermore, a third hollow cavity 21 is provided at the junction of the inner ring frame 2 and the first support rib 301, and the third hollow cavity 21 communicates with the first hollow cavity 32. In this case, the first magnetic strip 41 can be extended and embedded in the third hollow cavity 21, further improving heating efficiency in the inner ring in conjunction with the second heat dissipation hole 33. In some embodiments, the magnetic strip portion of the third hollow cavity 21 can also be provided separately, instead of extending from the first magnetic strip 41; this is not specifically limited.

[0041] Further, please refer to Figure 1 and Figures 6 to 8The coil 100 requires connecting wires (not shown in the figure) wound from the inner and outer rings. To address this, a connecting plate 34 is provided at least once between adjacent support ribs 3. The connecting plate 34 has an inner wire clamp 51 for securing the inner ring power wire of the coil 100. Specifically, a protrusion for securing the power wire is provided at the junction of the middle section of the support rib 3 and the outer ring frame 1. Preferably, the inner wire clamp 51 is located on the back of the connecting plate 34. The outer wire clamp 52 is located on the outer ring frame 1 and can be pulled directly from the outer ring of the coil 100. The outer wire clamp 52 is also located at the corresponding position on the connecting plate 34, and can be positioned at the top, offset from the inner wire clamp 51.

[0042] Furthermore, as an installation device for the entire coil support, a plurality of fixing posts 13 are provided on the outer periphery of the outer ring frame 1, preferably three posts are evenly arranged in a ring.

[0043] As stated above, this case protects a coil support for IH equipment, and all technical solutions that are the same as or similar to this case should be considered to fall within the scope of protection of this case.

Claims

1. A coil support for an IH device, characterized in that It includes an outer ring frame (1) and an inner ring frame (2), and a plurality of support ribs (3) disposed between the outer ring frame (1) and the inner ring frame (2). A plurality of first heat dissipation holes (31) are formed between the support ribs (3). A coil winding area (1000) is formed at the upper end of the support ribs (3) between the outer ring frame (1) and the inner ring frame (2). The back of the support rib (3) is provided with a first hollow cavity (32) into which a magnetic strip (4) can be embedded.

2. The coil support for an IH device as described in claim 1, characterized in that, The outer ring frame (1) is provided with a support column (11) at the connection with the support rib (3), and the support column (11) is provided with a second hollow cavity (12) that communicates with the first hollow cavity (32).

3. A coil former for an IH appliance as defined in claim 1, characterized in that The support rib (3) includes a first support rib (301) whose two ends are directly connected to the outer ring frame (1) and the inner ring frame (2), and a second support rib (302) whose one end is connected to the outer ring frame (1) and whose other end is located between adjacent first support ribs (301).

4. A coil former for an IH appliance as defined in claim 3, characterized in that A second heat dissipation hole (33) is formed between the inner ring frame (2) and the second support rib (302) and the two adjacent first support ribs (301).

5. A coil former for an IH appliance as defined in claim 3, characterized in that The inner ring frame (2) has a third hollow cavity (21) at the connection with the first support rib (301), and the third hollow cavity (21) is connected to the first hollow cavity (32).

6. A coil former for an IH appliance as defined in claim 3, characterized in that There are 6 first support ribs (301) and 6 second support ribs (302).

7. A coil former for an IH appliance as defined in claim 3, characterized in that It also includes a first magnetic strip (41) pre-installed on the first support rib (301) and a second magnetic strip (42) pre-installed on the second support rib (302), wherein the magnetic permeability of the second magnetic strip (42) is higher than that of the first magnetic strip (41).

8. A coil former for an IH appliance as defined in claim 1, characterized in that A connecting plate (34) is provided between at least one adjacent support rib (3), and the connecting plate (34) is provided with an inner wire clamp (51) for fixing the inner ring power line of the coil disc (100).

9. A coil former for an IH appliance as defined in claim 8, characterized in that It also includes an outer wire clamp (52) disposed on the outer ring frame (1), the outer wire clamp (52) being disposed on the connecting plate (34) corresponding to the outer ring frame (1).

10. A coil holder for an IH device as described in claim 1, characterized in that, It also includes a plurality of fixed posts (13) disposed on the outer periphery of the outer ring frame (1).

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