Cooking machine coil panel structure capable of preventing electromagnetic interference

Abstract

The utility model discloses a cooker coil panel structure capable of preventing electromagnetic interference, which comprises a base, a coil winding and a plurality of first magnetic strips, the coil winding is fixed on the base, the first magnetic strips are arranged on the base, each first magnetic strip comprises a vertical edge and a horizontal edge, the vertical edge is positioned at one end of the horizontal edge, and the horizontal edge is positioned at the other end of the vertical edge. The vertical edge is located on the outer side of the coil winding, and the horizontal edge is located above the coil winding. The first magnetic strip is arranged, and the first magnetic strip comprises the vertical edge and the horizontal edge, so that the coil winding and the base can cover and wrap the coil winding through the vertical edge and the horizontal edge, an electromagnetic field generated in the working process of the coil is effectively gathered, the electromagnetic field generated by the coil winding is prevented from leaking to the outside of the magnetic strip, and electromagnetic radiation interference is shielded; therefore, electromagnetic interference is prevented. Through cooperation of all the structures, the overall structure is optimized, the technology is simple, and the manufacturing and installation cost can be reduced.

Description

A coil structure for a stir-fry machine to prevent electromagnetic interference Technical Field

[0001] This utility model relates to a coil structure, and more particularly to a coil structure for a cooking machine that prevents electromagnetic interference. Background Technology

[0002] Conventional electromagnetic heating coils, especially those used in smart cooking machines, require specific magnetic properties. To prevent magnetic leakage, patent application number 202320168080.6 discloses a heating coil and a cooking machine for a cooking machine. This design involves attaching multiple magnetic strips to the heating coil and using an epoxy fiberglass board. In this structure, the magnetic strips are individually attached to the heating coil. However, due to the arc shape of the coil support, the magnetic strips are prone to loose adhesion to the arc wall, easily detaching during use and causing magnetic leakage. Furthermore, the individual installation process is cumbersome and inefficient. Even after the magnetic strips are attached to the heating coil, they only cover the top of the coil, potentially leading to magnetic leakage around the outer periphery of the heating coil. Summary of the Invention

[0003] The purpose of this invention is to provide a stir-fry machine coil structure that can solve at least one of the above problems and prevent electromagnetic interference.

[0004] According to one aspect of the present invention, a stir-fry machine coil structure for preventing electromagnetic interference is provided, comprising a base, a coil winding and a first magnetic strip. The coil winding is fixed on the base, and the first magnetic strip consists of multiple strips disposed on the base. The first magnetic strip includes a vertical side and a horizontal side, with the vertical side located at one end of the horizontal side and outside the coil winding, and the horizontal side located above the coil winding.

[0005] The beneficial effects of this utility model are as follows: by providing a first magnetic strip, which includes a vertical side and a horizontal side, the coil winding and the base can cover and wrap the coil winding, effectively gathering the electromagnetic field generated during the operation of the coil, preventing the electromagnetic field generated by the coil winding from leaking to the outside of the magnetic strip, thus achieving shielding against electromagnetic radiation interference and preventing electromagnetic interference.

[0006] In some embodiments, multiple first magnetic strips are evenly distributed on the base, with the other end of the horizontal side of each first magnetic strip extending inward beyond the inner coil of the coil winding. This ensures that the horizontal side of the first magnetic strip effectively covers the coil winding.

[0007] In some embodiments, a stir-fry machine coil structure for preventing electromagnetic interference further includes a magnetic strip bracket, which is fixed to a base, and each first magnetic strip is fixed to the magnetic strip bracket. Thus, the magnetic strip bracket facilitates the installation of the first magnetic strips, and the bracket's fixation to the base allows for quick and easy installation of the entire first magnetic strip onto the base, improving assembly efficiency.

[0008] In some embodiments, the magnetic strip holder is provided with a mounting groove, the horizontal side of the first magnetic strip is located within the mounting groove, and the vertical side of the first magnetic strip extends downward after passing through the mounting groove. Thus, by providing a mounting groove, it is convenient to quickly install and fix the first magnetic strip on the magnetic strip holder.

[0009] In some embodiments, a stir-fry machine coil structure for preventing electromagnetic interference also includes an aluminum cover located outside the vertical edge of the magnetic strip and fixed between the base and the magnetic strip support. Thus, by including the aluminum cover, the leakage of electromagnetic fields generated by the coil winding can be further prevented, resulting in better shielding.

[0010] In some embodiments, the base is provided with a slot, the bottom end of the magnetic strip bracket is provided with a slot, the bottom end of the aluminum cover is fixed in the slot, and the top end of the aluminum cover is fixed in the slot. Thus, the slot and slot design facilitates the quick and easy installation and fixing of the aluminum cover.

[0011] In some embodiments, a stir-fry machine coil structure designed to prevent electromagnetic interference also includes an NTC temperature sensor. One end of the NTC temperature sensor extends beyond the base, and the other end is fixed to a magnetic strip support. Multiple NTC temperature sensors are used. Therefore, by incorporating NTC temperature sensors, temperature measurement can be achieved, facilitating the detection of the stir-fry machine's heating temperature and meeting various usage requirements.

[0012] In some embodiments, a stir-fry machine coil structure for preventing electromagnetic interference further includes a second magnetic strip. The second magnetic strip has the same structure as the first magnetic strip, but its horizontal side is shorter than that of the first magnetic strip. The second magnetic strip is fixed to a magnetic strip support and located between two adjacent first magnetic strips. Therefore, by providing the second magnetic strip, the coil winding can be further covered, further preventing electromagnetic field leakage and better preventing electromagnetic interference.

[0013] In some embodiments, the base is provided with an annular groove, and the coil winding is wound in the annular groove. Thus, by providing an annular groove, it is convenient to wind the coil winding on the base. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the structure of a stir-fry machine coil for preventing electromagnetic interference according to this utility model;

[0015] Figure 2 is an exploded structural diagram of a stir-fry machine coil structure for preventing electromagnetic interference according to this utility model.

[0016] Figure 3 is a schematic diagram of the coil structure of a stir-fry machine to prevent electromagnetic interference from another perspective.

[0017] Figure 4 is a cross-sectional view of a cooking machine coil structure for preventing electromagnetic interference according to this utility model. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] Referring to Figures 1 to 4, a stir-fry machine coil structure for preventing electromagnetic interference includes a base 1, a coil winding 2, and a first magnetic strip 3. The coil winding 2 is fixed on the base 1. Multiple first magnetic strips 3 are disposed on the base 1. Each first magnetic strip 3 includes a vertical edge 31 and a horizontal edge 32. The vertical edge 31 is located at one end of the horizontal edge 32 and is located outside the coil winding 2. The horizontal edge 32 is located above the coil winding 2. The first magnetic strip 3 is a manganese-zinc ferrite high-permeability magnetic strip, which effectively prevents the electromagnetic field generated by the coil winding 2 from leaking out. The vertical edge 31 also wraps around the side of the coil winding 2, further preventing the electromagnetic field generated by the coil winding from leaking outside the magnetic strip.

[0020] In actual production and use, an annular groove 12 is formed at the bottom of the base 1, and the coil winding 2 is wound in the annular groove 12. The annular groove 12 facilitates the winding and fixing of the coil winding 2. Both ends of the coil winding 2 extend out and are connected to terminals 8 to facilitate energizing the coil winding 2; fiberglass tubes 9 are sleeved on both ends of the coil winding 2 to protect the ends of the coil winding 2.

[0021] Multiple first magnetic strips 3 are evenly distributed on the base 1, with the other end of the horizontal side 32 of the first magnetic strip 3 extending inward beyond the inner circle of the coil winding 2. The number of first magnetic strips 3 can be three, four, five, six, or other corresponding quantities, which can be increased or decreased according to the actual size of the base 1. The vertical side 31 of the first magnetic strip 3 abuts against the bottom end face of the base 1. Therefore, under the combined action of the horizontal side 32 and the vertical side 31 of the magnetic strip 3, the coil winding 2 can be covered, effectively concentrating the electromagnetic field generated during the coil's operation and preventing the electromagnetic field generated by the coil winding from leaking outside the magnetic strip, thus achieving shielding against electromagnetic radiation interference and maximizing the prevention of electromagnetic interference.

[0022] The electromagnetic interference prevention structure for a cooking machine coil of this utility model also includes a magnetic strip support 4, which is fixed to the base 1, and each first magnetic strip 3 is fixed to the magnetic strip support 4. The magnetic strip support 4 is a one-piece injection molded structure. To facilitate the installation and fixation of the magnetic strip support 4 on the base 1, a mounting post 13 is formed at the bottom of the base 1, and mounting holes are formed on the magnetic strip support 4. The mounting holes are aligned with the mounting post 13 and secured with screws.

[0023] The magnetic strip bracket 4 has a mounting groove 41 formed on it. The horizontal side 32 of the first magnetic strip 3 is located in the mounting groove 41, and the vertical side 31 of the first magnetic strip 3 passes through the mounting groove 41 and extends downward. When the first magnetic strip 3 is installed on the magnetic strip bracket 4, in order to improve the stability of the first magnetic strip 3 in the mounting groove 41, the horizontal side 32 of the first magnetic strip 3 is glued and fixed in the mounting groove 41.

[0024] By providing a magnetic strip bracket 4, the first magnetic strip 3 can be quickly installed and fixed, and the installation stability of the first magnetic strip 3 can be improved, preventing the first magnetic strip 3 from falling off during use; and the first magnetic strip 3 does not need to be pasted along the arc-shaped side wall of the base, further improving the installation stability of the first magnetic strip 3, thereby ensuring that the first magnetic strip 3 covers and wraps the coil winding 2, preventing electromagnetic field leakage.

[0025] The electromagnetic interference prevention structure for a cooking machine coil of this utility model also includes an aluminum cover 5, which is located outside the vertical edge 31 of the magnetic strip 3 and is fixed between the base 1 and the magnetic strip support 4. By providing the aluminum cover 5, the entire side of the coil winding 2 can be enclosed, further preventing the electromagnetic field generated by the coil winding 2 from leaking out.

[0026] The base 1 is provided with a slot 11, the bottom end of the magnetic strip bracket 4 is provided with a slot 42, the bottom end of the aluminum cover 5 is fixed in the slot 11, and the top end of the aluminum cover 5 is fixed in the slot 42.

[0027] An electromagnetic interference-preventing coil structure for a cooking machine also includes an NTC temperature sensor 6. One end of the NTC temperature sensor 6 extends beyond the base 1, and the other end is fixed to the magnetic strip bracket 4. Multiple NTC temperature sensors 6 are included. The NTC temperature sensor 6 is existing technology, and its specific temperature detection principle will not be elaborated further. By incorporating the NTC temperature sensor 6, the heating temperature at the base can be detected in real time, facilitating temperature adjustment and control during use of the cooking machine. The NTC temperature sensor 6 is mounted with its position defined by the base 1 and the magnetic strip bracket 4. A waterproof silicone ring 10 is installed at the mating point between the base 1 and the magnetic strip bracket 4, providing waterproof protection for the NTC temperature sensor 6.

[0028] The electromagnetic interference prevention structure of the cooking machine coil of this utility model also includes a second magnetic strip 7. The structure of the second magnetic strip 7 is the same as that of the magnetic strip 3. The length of the horizontal side of the second magnetic strip 7 is shorter than the length of the horizontal side of the first magnetic strip 3. The second magnetic strip 7 is fixed on the magnetic strip support 4 and located between two adjacent first magnetic strips 3. The method of fixing the second magnetic strip 7 on the magnetic strip support 4 is the same as the method of fixing the first magnetic strip 3 on the magnetic strip support 4.

[0029] By providing a second magnetic strip 7, the coil winding 2 can be better covered, further preventing the electromagnetic field generated by the coil winding 2 from leaking out.

[0030] Therefore, the electromagnetic interference prevention structure of the cooking machine coil of this utility model, by providing a magnetic strip bracket 4, facilitates the quick and easy installation and fixing of each magnetic strip; the first magnetic strip 3, with its horizontal edge 32 and vertical edge 31, combined with the aluminum cover 5, can cover the coil winding 2, preventing the electromagnetic field generated by the coil winding from leaking outside the magnetic strip, thus achieving shielding against electromagnetic radiation interference and maximizing the prevention of electromagnetic interference; through the cooperation of various structures, the overall structure is optimized, the process is simple, and it helps to reduce manufacturing and installation costs. When this structure is applied to a cooking machine, it can meet the FCC (Federal Communications Commission) testing and certification requirements for electromagnetic interference prevention.

[0031] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A coil structure for a stir-fry machine to prevent electromagnetic interference, characterized in that, The device includes a base (1), a coil winding (2), and a first magnetic strip (3). The coil winding (2) is fixed on the base (1). The first magnetic strip (3) consists of multiple strips and is located on the base (1). The first magnetic strip (3) includes a vertical side (31) and a horizontal side (32). The vertical side (31) is located at one end of the horizontal side (32). The vertical side (31) is located outside the coil winding (2), and the horizontal side (32) is located above the coil winding (2).

2. The stir-fry machine coil structure for preventing electromagnetic interference according to claim 1, characterized in that, Multiple first magnetic strips (3) are evenly distributed on the base (1), and the other end of the horizontal side (32) of the first magnetic strip (3) extends inward beyond the inner circle of the coil winding (2).

3. The stir-fry machine coil structure for preventing electromagnetic interference according to claim 2, characterized in that, It also includes a magnetic strip bracket (4), which is fixed on the base (1), and each of the first magnetic strips (3) is fixed on the magnetic strip bracket (4).

4. The electromagnetic interference prevention coil structure for a cooking machine according to claim 3, characterized in that, The magnetic strip bracket (4) is provided with an installation groove (41), the horizontal side (32) of the first magnetic strip (3) is provided in the installation groove (41), and the vertical side (31) of the first magnetic strip (3) extends downward after passing through the installation groove (41).

5. The electromagnetic interference prevention coil structure for a cooking machine according to claim 4, characterized in that, It also includes an aluminum cover (5), which is located outside the vertical side (31) of the magnetic strip (3) and is fixed between the base (1) and the magnetic strip support (4).

6. The electromagnetic interference prevention coil structure for a cooking machine according to claim 5, characterized in that, The base (1) is provided with a slot (11), the bottom end of the magnetic strip bracket (4) is provided with a slot (42), the bottom end of the aluminum cover (5) is fixed in the slot (11), and the top end of the aluminum cover (5) is fixed in the slot (42).

7. A stir-fry machine coil structure for preventing electromagnetic interference according to any one of claims 3 to 6, characterized in that, It also includes an NTC temperature sensor (6), one end of which extends beyond the base (1) and the other end is fixed on the magnetic strip bracket (4). There are multiple NTC temperature sensors (6).

8. A stir-fry machine coil structure for preventing electromagnetic interference according to any one of claims 3 to 6, characterized in that, It also includes a second magnetic strip (7), the structure of which is the same as that of the magnetic strip (3). The length of the horizontal side of the second magnetic strip (7) is less than that of the horizontal side of the first magnetic strip (3). The second magnetic strip (7) is fixed on the magnetic strip bracket (4) and located between two adjacent first magnetic strips (3).

9. The electromagnetic interference prevention structure for a cooking machine coil as described in claim 1, characterized in that, The base (1) is provided with an annular groove (12), and the coil winding (2) is wound in the annular groove (12).

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