Induction cooker wire reel assembly

Abstract

The utility model relates to the technical field of induction cookers, and specifically discloses an induction cooker coil assembly. A plurality of first heat dissipation holes are arranged on a metal bottom plate. Since the magnetic strip has the function of gathering magnetic lines of force and also has the function of shielding the electromagnetic field, the electromagnetic energy generated by the inner ring coil and the outer ring coil can be effectively prevented from leaking from below the magnetic strip. The first heat dissipation holes are used for heat dissipation. When a heat dissipation device such as a fan under the metal bottom plate is started, the heat generated by the inner ring coil and the outer ring coil can be quickly discharged from the first heat dissipation holes, thereby improving the heat dissipation effect and avoiding overheating of the double-ring coil disk. A plurality of second heat dissipation holes are arranged directly below the partition plate, and an annular metal shielding cover is also arranged between the partition plate and the second heat dissipation holes. The inner and outer sides of the metal shielding cover are both provided with a plurality of third heat dissipation holes, thereby improving the heat dissipation effect and avoiding overheating of the double-ring coil disk.

Description

Technical Field

[0001] The utility model relates to the technical field of induction cookers, in particular to an induction cooker wire reel assembly. Background Art

[0002] An induction cooker is an electrical cooking appliance made based on the principle of electromagnetic induction heating. It mainly uses a coil disk to generate a low-frequency (20-25KHZ) alternating magnetic field under the action of a control circuit, which generates a large amount of dense eddy current through the magnetic (iron) pot, and converts the induced current into heat to heat food.

[0003] The induction cooker has a wire reel assembly, which includes a metal bottom plate and a coil reel arranged on the metal bottom plate. The magnetic strips in the coil reel play the role of gathering magnetic lines of force. The magnetic strips are usually arranged in a radial structure at the bottom of the bracket of the wire reel assembly, so that the magnetic lines of force generated by the coil are gathered at the bottom of the pot, thereby reducing magnetic loss and improving the heating efficiency of the induction cooker. Some induction cookers use double-ring coil reels. In the process of winding the wire reel, after winding several turns, a distance is separated in the middle of the coil reel, and then the remaining turns are wound to form two inner and outer coils; the design of the double-ring coil reel is mainly to alleviate the "point boiling" effect of the induction cooker. Due to the limitations of the winding process during the production of general wire reels, it is difficult to ensure the uniformity of the entire coil. Therefore, the magnetic field distribution generated by each wire reel produced is also different. Due to this innate reason, the magnetic field distribution of each induction cooker is also different, so when heating, the area with a high magnetic field density will boil first, and the area with a low magnetic field density will boil later. This phenomenon is generally more obvious in the early stage of water boiling, but it is basically not obvious when it is all boiling. The double-ring coil disk is mainly improved on the winding structure, so that the magnetic field it generates is more evenly distributed, and the area of ​​induced eddy current at the bottom of the pot is increased, thereby achieving the purpose of alleviating the "boiling point" effect.

[0004] In conventional induction cooker coil assemblies, the metal bottom plate is usually a plate-like structure with a complete surface, which has an electromagnetic shielding effect to ensure that the magnetic lines of force generated by the coil will not interfere with the circuit board below. However, when the induction cooker is heated, the coil disk generates a lot of heat, and the conventional metal bottom plate does not have a good heat dissipation effect, resulting in severe heating of the coil disk.

[0005] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide an induction cooker wire reel assembly to solve the problem of poor heat dissipation effect of the induction cooker wire reel assembly in the prior art.

[0007] An induction cooker wire reel assembly comprises a metal bottom plate and at least one double-ring coil disk arranged on the metal bottom plate, the double-ring coil disk comprises a bracket, an inner ring coil, an outer ring coil and a magnetic strip, the bracket is divided into inner and outer coil slots by an annular partition, the inner ring coil and the outer ring coil are arranged in the inner and outer coil slots respectively, a plurality of radial magnetic strip cavities are formed at the bottom of the bracket, the magnetic strip is arranged in the magnetic strip cavity, a plurality of first heat dissipation holes which are distributed radially and located directly below the magnetic strip are provided on the metal bottom plate, a plurality of second heat dissipation holes which are distributed annularly and located directly below the partition are also provided on the metal bottom plate, an annular metal shielding cover is also provided between the partition and the second heat dissipation hole, and a plurality of third heat dissipation holes are provided on the inner and outer sides of the metal shielding cover.

[0008] Specifically, the first heat dissipation hole and the second heat dissipation hole are both round holes.

[0009] Specifically, an annular metal shielding plate is sleeved on the outer side of the bracket.

[0010] Specifically, a support leg is connected to the lower end of the bracket, a first mounting hole is provided on the metal bottom plate, and the support leg is fixed to the first mounting hole by a first screw.

[0011] Specifically, a heat dissipation interval supported by the legs is formed between the bracket and the metal bottom plate, and the metal shielding cover is located in the heat dissipation interval.

[0012] Specifically, the metal shielding cover is connected to a mounting portion, a second mounting hole is provided on the metal bottom plate, and the mounting portion is fixed to the second mounting hole by a second screw.

[0013] Specifically, the edge of the metal bottom plate is bent upward to form four side plates, and the side plates are provided with fourth mounting holes.

[0014] Specifically, the fourth mounting hole is a waist hole.

[0015] Beneficial effects of the utility model:

[0016] The induction cooker coil assembly of the utility model is provided with a plurality of first heat dissipation holes on the metal bottom plate. Since the magnetic strip has the function of not only gathering magnetic lines of force but also shielding the electromagnetic field, it can effectively prevent the electromagnetic energy generated by the inner ring coil and the outer ring coil from leaking from under the magnetic strip. Therefore, the first heat dissipation hole is arranged directly under the magnetic strip. On the premise of ensuring that the electromagnetic energy will not leak at this position, the first heat dissipation hole is also used for heat dissipation. When the heat dissipation device such as the fan under the metal bottom plate is started, the heat generated by the inner ring coil and the outer ring coil can be quickly discharged from the first heat dissipation hole, thereby improving the heat dissipation effect and avoiding overheating of the double-ring coil disk. A plurality of second heat dissipation holes are arranged directly under the partition, and an annular metal shielding cover is also arranged between the partition and the second heat dissipation holes. A plurality of third heat dissipation holes are arranged on the inner and outer sides of the metal shielding cover. When the heat dissipation device such as the fan under the metal bottom plate is started, the heat generated by the inner ring coil and the outer ring coil can also be discharged after passing through the third heat dissipation hole and the second heat dissipation hole in sequence, thereby improving the heat dissipation effect and avoiding overheating of the double-ring coil disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a top view of the induction cooker wire reel assembly of this embodiment;

[0018] Figure 2 for Figure 1 Cross-section of the middle AA surface;

[0019] Figure 3 It is a three-dimensional diagram of the induction cooker wire reel assembly of the utility model;

[0020] Figure 4 The utility model is an explosion-proof device for the induction cooker wire reel assembly. Figure 1 ;

[0021] Figure 5 The utility model is an explosion-proof device for the induction cooker wire reel assembly. Figure 2 .

[0022] The accompanying drawings are marked as follows: metal base plate 10, double-ring coil disk 20, bracket 21, inner ring coil 22, outer ring coil 23, magnetic strip 24, partition 25, first heat dissipation hole 11, second heat dissipation hole 12, metal shielding cover 30, third heat dissipation hole 31, metal shielding plate 40, support leg 211, first mounting hole 13, heat dissipation spacer 50, mounting portion 32, second mounting hole 14, side plate 15, fourth mounting hole 16. DETAILED DESCRIPTION

[0023] The utility model provides an induction cooker wire reel assembly. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0025] like Figures 1 to 5 The present embodiment discloses an induction cooker wire reel assembly, including a metal bottom plate 10, at least one double-ring coil disk 20 arranged on the metal bottom plate 10, the double-ring coil disk 20 includes a bracket 21, an inner ring coil 22, an outer ring coil 23 and a magnetic strip 24, the bracket 21 is divided into two inner and outer coil slots by an annular partition 25, the inner ring coil 22 and the outer ring coil 23 are respectively arranged in the inner and outer coil slots, a plurality of radial magnetic strip cavities are formed at the bottom of the bracket 21, the magnetic strip 24 is arranged in the magnetic strip cavity, a plurality of first heat dissipation holes 11 distributed radially and located directly below the magnetic strip 24 are provided on the metal bottom plate 10, a plurality of second heat dissipation holes 12 distributed annularly and located directly below the partition 25 are also provided on the metal bottom plate 10, an annular metal shielding cover 30 is also provided between the partition 25 and the second heat dissipation hole 12, and a plurality of third heat dissipation holes 31 are provided on the inner and outer sides of the metal shielding cover 30.

[0026] The induction cooker coil assembly of the present embodiment is provided with a plurality of first heat dissipation holes 11 on the metal bottom plate 10. Since the magnetic strip 24 not only has the function of gathering magnetic lines of force, but also has the function of shielding the electromagnetic field, it can effectively prevent the electromagnetic energy generated by the inner ring coil 22 and the outer ring coil 23 from leaking from under the magnetic strip 24. Therefore, the first heat dissipation holes 11 are arranged directly below the magnetic strip 24 in the present embodiment. On the premise of ensuring that electromagnetic energy will not leak at this position, the first heat dissipation holes 11 are also used for heat dissipation. When the heat dissipation device such as the fan under the metal bottom plate 10 is started, the heat generated by the inner ring coil 22 and the outer ring coil 23 can be quickly discharged from the first heat dissipation holes 11, thereby improving the heat dissipation effect and avoiding overheating of the double-ring coil disc 20.

[0027] Moreover, since the inner ring coil 22 and the outer ring coil 23 are separated by the annular partition 25, there are fewer magnetic lines of force at the position below the partition 25. Under the premise of not affecting the electromagnetic shielding function of the metal bottom plate 10, in order to further improve the heat dissipation effect of the induction cooker wire disk assembly, this embodiment is also provided with a plurality of second heat dissipation holes 12 on the metal bottom plate 10. The second heat dissipation holes 12 are distributed in an annular shape and are located directly below the partition 25. In addition, in order to ensure that the magnetic lines of force do not pass through the second heat dissipation holes 12, this embodiment is also provided with an annular metal shielding cover 30 between the partition 25 and the second heat dissipation holes 12. The inner and outer sides of the metal shielding cover 30 are provided with a plurality of third heat dissipation holes 31. When the heat dissipation device such as the fan under the metal bottom plate 10 is started, the heat generated by the inner ring coil 22 and the outer ring coil 23 can also be discharged after passing through the third heat dissipation holes 31 and the second heat dissipation holes 12 in sequence, thereby improving the heat dissipation effect and avoiding overheating of the double-ring coil disk 20.

[0028] Please refer to Figure 4 and Figure 5 In this embodiment, the first heat dissipation holes 11 and the second heat dissipation holes 12 are both circular holes, and are arranged at equal intervals along the distribution track. The circular hole structure is easier to form and manufacture in the punching process, and the circular hole forming will not have a significant impact on the structural stability of the metal base plate 10, and the structural strength of the metal base plate 10 can be ensured. Of course, the circular holes used in this embodiment are only one of the preferred implementation methods. In other embodiments, gradient holes, polygonal holes, etc. can also be used.

[0029] Please refer to Figure 1 , Figure 2 and Figure 4 The present embodiment adopts a structure of two double-loop coil disks 20. In order to prevent the magnetic field lines generated by one of the double-loop coil disks 20 from interfering with the other double-loop coil disk 20, an annular metal shielding plate 40 is also sleeved on the outer side of the bracket 21 of the present embodiment to prevent the electromagnetic field generated by the double-loop coil disk 20 from radiating to the surrounding space, thereby avoiding interference and influence on other double-loop coil disks 20 or nearby electronic components.

[0030] Please refer to Figure 4 In this embodiment, the lower end of the bracket 21 is connected to a support leg 211, and the metal base plate 10 is provided with a first mounting hole 13. The support leg 211 is fixed to the first mounting hole 13 by a first screw (not shown).

[0031] Please refer to Figure 2In this embodiment, a heat dissipation gap 50 supported by the legs 211 is formed between the bracket 21 and the metal base plate 10, and the metal shielding cover 30 is located in the heat dissipation gap 50. By setting the heat dissipation gap 50, the heat generated by any double-loop coil disk 20 can enter the first heat dissipation holes 11, the second heat dissipation holes 12 and the third heat dissipation holes 31 corresponding to the two double-loop coil disks 20 through the heat dissipation gap 50, and the heat is dissipated from the first heat dissipation holes 11, the second heat dissipation holes 12 and the third heat dissipation holes 31 on both sides at the same time, thereby further improving the heat dissipation efficiency.

[0032] Please refer to Figure 4 The metal shielding cover 30 of this embodiment is connected with a mounting portion 32, and a second mounting hole 14 is provided on the metal base plate 10. The mounting portion 32 is fixed to the second mounting hole 14 by a second screw (not shown). The mounting and fixing by the second screw has low operation difficulty, and the metal shielding cover 30 has good stability after installation.

[0033] Please refer to Figure 3 The edge of the metal bottom plate 10 of this embodiment is bent upward to form four side plates 15. The metal plate is bent and formed at one time by a stamping die, which is convenient for production and manufacturing. A fourth mounting hole 16 is provided on the side plate 15. The fourth mounting hole 16 is used to position and install the metal bottom plate 10 in the induction cooker. Specifically, it can be fixed to the inside of the induction cooker by fasteners such as screws and bolts passing through the fourth mounting hole 16.

[0034] Furthermore, the fourth mounting hole 16 is a waist hole, which is convenient for adjusting the mounting position.

[0035] The preferred implementation methods of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. An induction cooker wire reel assembly, characterized in that: The invention comprises a metal bottom plate (10), and at least one double-ring coil disk (20) arranged on the metal bottom plate (10), wherein the double-ring coil disk (20) comprises a bracket (21), an inner ring coil (22), an outer ring coil (23) and a magnetic strip (24), wherein the bracket (21) is divided into two inner and outer coil slots by an annular partition plate (25), wherein the inner ring coil (22) and the outer ring coil (23) are arranged in the inner and outer coil slots respectively, and a plurality of radial magnetic strip cavities are formed at the bottom of the bracket (21), wherein the inner ring coil (22) and the outer ring coil (23) are arranged in the inner and outer coil slots respectively. The magnetic stripe (24) is arranged in the magnetic stripe cavity, the metal bottom plate (10) is provided with a plurality of first heat dissipation holes (11) which are radially distributed and located directly below the magnetic stripe (24), the metal bottom plate (10) is also provided with a plurality of second heat dissipation holes (12) which are annularly distributed and located directly below the partition (25), an annular metal shielding cover (30) is also provided between the partition (25) and the second heat dissipation holes (12), and a plurality of third heat dissipation holes (31) are provided on the inner and outer sides of the metal shielding cover (30).

2. The induction cooker wire reel assembly according to claim 1, characterized in that: The first heat dissipation hole (11) and the second heat dissipation hole (12) are both circular holes.

3. The induction cooker wire reel assembly according to claim 1, characterized in that: An annular metal shielding plate (40) is also sleeved on the outer side of the bracket (21).

4. The induction cooker wire reel assembly according to claim 1, characterized in that: The lower end of the bracket (21) is connected to a support leg (211), a first mounting hole (13) is provided on the metal bottom plate (10), and the support leg (211) is fixed to the first mounting hole (13) by a first screw.

5. The induction cooker wire reel assembly according to claim 4, characterized in that: A heat dissipation interval (50) supported by the support legs (211) is formed between the bracket (21) and the metal bottom plate (10), and the metal shielding cover (30) is located in the heat dissipation interval (50).

6. The induction cooker wire reel assembly according to claim 1, characterized in that: The metal shielding cover (30) is connected to a mounting portion (32), a second mounting hole (14) is provided on the metal base plate (10), and the mounting portion (32) is fixed to the second mounting hole (14) by a second screw.

7. The induction cooker wire reel assembly according to claim 1, characterized in that: The edge of the metal bottom plate (10) is bent upward to form four side plates (15), and the side plates (15) are provided with fourth mounting holes (16).

8. The induction cooker wire reel assembly according to claim 7, characterized in that: The fourth mounting hole (16) is a waist hole.

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