Coil panel assembly and electromagnetic heating appliance

Abstract

The utility model discloses a coil panel assembly and an electromagnetic heating appliance, the coil panel assembly comprises an insulation board, the upper surface of the insulation board is fixedly connected with an electromagnetic coil, and the lower bottom surface of the insulation board is fixedly connected with a magnetic core; the bottom plate is connected with at least two fixing supports, limiting bosses are arranged on the upper surfaces of all the fixing supports, the limiting bosses jointly define a containing space capable of containing an insulation heat insulation plate, the limiting bosses divide the fixing supports into inner sections and outer sections, the inner sections are fixedly connected to the lower bottom face of the insulation heat insulation plate, the inner sections are provided with supporting ribs abutting against the bottom plate, and the outer sections are fixedly connected to the lower bottom face of the insulation heat insulation plate. The outer section is located on the periphery of the insulation board. Compared with the prior art, the edge of the insulation board is protected and supported by the fixing support, the risk that the insulation board is damaged is greatly reduced, the assembling efficiency and the assembling precision are improved, and high economic benefits are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of household appliances, and in particular to coil assembly and electromagnetic heating appliance. Background Technology

[0002] With the continuous development of electromagnetic heating technology, coil assemblies are increasingly widely used in various household appliances. However, most common embedded multi-burner stove coil assemblies use tightly wound coils, and due to cost and manufacturing issues, the common fixing method is glue bonding, which has many shortcomings, such as complex installation, poor stability, easy loosening, and easy damage to the mica substrate. Therefore, there is an urgent need for a new type of coil assembly to solve the existing problems. Utility Model Content

[0003] The present invention aims to provide a coil disk assembly that is superior to the prior art.

[0004] According to a first aspect embodiment of the present invention, a coil disk assembly includes:

[0005] An insulating heat insulation board, wherein an electromagnetic coil is fixedly connected to its upper surface and a magnetic core is fixedly connected to its lower bottom surface;

[0006] The base plate is connected to at least two fixed supports. The upper surface of all fixed supports is provided with limiting bosses. All limiting bosses together define an accommodating space for accommodating the insulating heat insulation board. The limiting bosses divide the fixed supports into an inner section and an outer section. The inner section is fixed to the lower bottom surface of the insulating heat insulation board and is provided with a supporting rib that abuts against the base plate. The outer section is located on the periphery of the insulating heat insulation board.

[0007] The coil assembly according to the present invention has at least the following beneficial effects: During assembly, the electromagnetic coil and magnetic core are first fixed to the upper and lower sides of the insulating heat insulation plate, respectively. On the other side, multiple fixing brackets are positioned and installed on the base plate. Then, glue is applied to the inner section of the fixing brackets. Since all the limiting bosses together define the accommodating space that can accommodate the insulating heat insulation plate, the insulating heat insulation plate can be directly positioned and placed in the accommodating space, thereby simplifying the alignment steps between the insulating heat insulation plate and the base plate. Compared with the prior art, the edge of the insulating heat insulation plate is protected and supported by the fixing brackets, which greatly reduces the risk of damage to the insulating heat insulation plate. Furthermore, the assembly efficiency and assembly accuracy of the present invention are improved, resulting in strong economic benefits.

[0008] According to some embodiments of this utility model, the magnetic core is fixedly connected to the base plate. Since the electromagnetic coil vibrates during use, fixing the insulating heat insulation plate to the base plate via the magnetic core effectively transmits the vibration.

[0009] According to some embodiments of this utility model, all the fixing structures are glue-based fixing structures. Compared with other fixing structures, glue-based fixing structures are more efficient and less expensive.

[0010] According to some embodiments of this utility model, the upper surface of the inner section is provided with multiple adhesive grooves. The adhesive grooves are beneficial for retaining adhesive, which not only enhances the three-dimensional structure of the adhesive and strengthens the bonding strength, but also prevents the formation of an uneven adhesive layer.

[0011] According to some embodiments of this utility model, the base plate is provided with multiple positioning holes, and each fixed bracket is provided with at least two limiting buckles, each of the limiting buckles being connected to the corresponding positioning hole. Since the positioning holes on the base plate are pre-designed, and the structure of the fixed bracket is also pre-designed, as long as the fixed bracket is installed in the corresponding positioning hole, a preset accommodating space can be formed, effectively improving assembly efficiency.

[0012] According to some embodiments of this utility model, the fixing bracket has a spring mounting structure reserved between all the limiting buckles to accommodate the addition of springs in the future.

[0013] According to some embodiments of the present invention, the coil assembly is provided with a mounting position that passes through the insulating heat insulation plate and the base plate. The mounting position is located at the center of the electromagnetic coil to reserve space for installing a detection unit.

[0014] According to some embodiments of this utility model, a detection unit is connected to the mounting position, and the detection unit has at least a temperature sensing element. The temperature sensing element has a real-time temperature measurement function to prevent overheating due to circuit failure.

[0015] According to some embodiments of this utility model, multiple magnetic cores are provided, and the multiple magnetic cores radiate outward from the center position of the electromagnetic coil. The function of the magnetic core is to shield the magnetic lines of force in the downward direction and enhance the electromagnetic induction effect in other directions. The magnetic core needs to be designed according to the size of the electromagnetic coil and the distribution of magnetic lines of force. For a disc-shaped electromagnetic coil, a radial magnetic core is preferred.

[0016] An electromagnetic heater according to a second aspect of the present invention includes a housing and the aforementioned coil assembly, the coil assembly being installed inside the housing.

[0017] The electromagnetic heater according to the present invention has at least the following advantages: by setting the coil assembly, the electromagnetic heater has a longer service life and more precise assembly dimensions compared to the prior art.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a top view of the coil assembly provided in this embodiment of the utility model;

[0021] Figure 2 yes Figure 1 The coil disk assembly shown is a cross-sectional view along section line AA;

[0022] Figure 3 This is an exploded perspective view of the coil assembly provided in this embodiment of the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the fixed bracket provided in an embodiment of the present utility model;

[0024] Figure 5 yes Figure 4 The front view of the fixed bracket shown.

[0025] In the attached diagram: 100-electromagnetic coil, 200-insulating heat insulation board, 300-magnetic core, 400-base plate, 210-first through hole, 500-fixed bracket, 510-limiting buckle, 511-triangular claw, 420-positioning hole, 520-spring mounting structure, 530-limiting boss, 540-inner section, 550-outer section, 541-supporting rib, 542-glue groove, 410-second through hole, 10-mounting position. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] like Figures 1 to 3 As shown, the coil assembly according to the first aspect of this utility model includes, from top to bottom, an electromagnetic coil 100, an insulating heat insulation plate 200, a magnetic core 300, and a base plate 400. The base plate 400 can be an aluminum plate or a plastic plate. When the coil assembly is used in a fitted electromagnetic heating appliance, the base plate 400 serves as a carrier for the coil assembly and a mounting body for the entire appliance. That is, the coil assembly and the microcrystalline plate of the entire appliance are connected through the base plate 400. The insulating heat insulation plate 200 can be a mica plate. The mica plate is made by bonding, heating, and pressing mica paper with silicone rubber. The mica content is approximately 90%, and the silicone rubber content is approximately 10%, making it an excellent high-temperature resistant insulating material.

[0031] For example, the electromagnetic coil 100 is formed by tightly winding the coil around the upper surface of the insulating heat insulation board 200 to form a multi-ring disc-shaped structure. The coil is wound using a combination of continuous tight winding and intermittent winding to improve heating efficiency and the uniformity of heat distribution. The shape of the electromagnetic coil 100 can be circular, square, elliptical, racetrack-shaped, etc., depending on the function and performance of the product. In this embodiment, the electromagnetic coil 100 is fixed to the upper surface of the insulating heat insulation board 200 with silicone sealant or silicone adhesive.

[0032] In order to quickly position the electromagnetic coil 100, there is a gap in the center of the electromagnetic coil 100, while the insulation and heat insulation plate 200 has a first through hole 210 pre-drilled in the center during production. When assembling, the workers can quickly position the electromagnetic coil 100 and the insulation and heat insulation plate 200 by aligning the gap and the first through hole 210.

[0033] For example, the number of magnetic cores 300 can be selected from six to sixteen, which are fixed to the bottom surface of the insulating heat insulation plate 200 by silicone sealant or silicone adhesive. The magnetic cores 300 do not directly contact the electromagnetic coil 100 to prevent short circuits. The layout of the magnetic cores 300 needs to be designed according to the size of the electromagnetic coil 100 and the distribution of magnetic lines of force. For a disc-shaped electromagnetic coil 100, the magnetic cores 300 radiate outward from the center of the electromagnetic coil 100, and multiple magnetic cores 300 are arranged in a staggered manner. The specific number depends on the size of the electromagnetic coil 100 and the distribution of magnetic lines of force. Since the upper area of ​​the electromagnetic coil 100 is the heating zone and the lower area is the non-heating zone, the magnetic lines of force located below are useless, which not only consumes power but also easily leads to damage to other electrical components. The function of the magnetic cores 300 is to shield the magnetic lines of force in the downward direction, enhance the electromagnetic induction effect in other directions, improve the inductance and Q value of the electromagnetic coil 100, and thus optimize the working performance of the electromagnetic heating appliance.

[0034] Since the multiple magnetic cores 300 are arranged in a radial structure, and there is a gap at the center of the electromagnetic coil 100, the multiple magnetic cores 300 naturally avoid the first through hole 210 of the insulating heat insulation plate 200. In order to achieve rapid assembly of the magnetic cores 300 and the insulating heat insulation plate 200, the bottom surface of the insulating heat insulation plate 200 is marked with multiple installation areas during production. During assembly, workers can quickly position the magnetic cores 300 and the insulating heat insulation plate 200 by aligning the installation areas.

[0035] like Figures 2 to 5 As shown, the coil assembly also includes at least two fixing brackets 500. The fixing brackets 500 are made of molded plastic material, preferably high-temperature resistant materials such as PP / PA / PBT / PET. The bottom of each fixing bracket 500 is provided with at least two limiting buckles 510. In this embodiment, each fixing bracket 500 has four limiting buckles 510, which are elastic and have triangular claws 511. Correspondingly, the base plate 400 is provided with multiple positioning holes 420, with four positioning holes 420 forming a group. Generally, the number of groups of positioning holes 420 is equal to the number of fixing brackets 500, but it is possible that the number of groups of positioning holes 420 exceeds the number of fixing brackets 500. Each fixed bracket 500 is connected to the corresponding positioning hole 420 by four limit buckles 510. Due to the characteristics of the limit buckles 510, the limit buckles 510 can be interference-fitted to the positioning hole 420 and after assembly, they are engaged with the base plate 400 by triangular claws 511, so as to realize the quick clamping and fixing of the fixed bracket 500 and the base plate 400. The assembly process is simple. Once the assembly is completed, the fixed bracket 500 and the base plate 400 cannot be separated without any external force.

[0036] Furthermore, the fixed bracket 500 has a spring mounting structure 520 reserved between all the limit buckles 510, in order to add springs in the future to tighten and fix the coil assembly to the microcrystalline plate of the electromagnetic heater, so as to realize the installation of the base plate 400.

[0037] For example, each fixed bracket 500 has a limiting boss 530 on its upper surface. The limiting boss 530 is located in the middle of the fixed bracket 500. When multiple fixed brackets 500 are assembled on the base plate 400, all the limiting bosses 530 together define an accommodating space for the insulating heat insulation board 200. The size of the accommodating space is equal to the size of the insulating heat insulation board 200. The limiting bosses 530 divide the fixed bracket 500 into an inner section 540 and an outer section 550. The inner section 540 of the fixed bracket 500 is fixed to the bottom surface of the insulating heat insulation board 200 by silicone sealant or silicone adhesive. The inner section 540 of the fixed bracket 500 is provided with a supporting rib 541 that abuts against the base plate 400. The outer section 550 of the fixed bracket 500 is located on the periphery of the insulating heat insulation board 200. At this time, the fixed brackets 500 are evenly distributed on the edge of the insulating heat insulation board 200 according to their number. Since the positioning holes 420 on the base plate 400 are pre-designed and the structure of the fixing bracket 500 is also pre-designed, as long as the fixing bracket 500 is installed in the corresponding positioning holes 420, a preset accommodating space can be formed. Workers only need to place the insulating heat insulation board 200 in the accommodating space to achieve rapid positioning of the insulating heat insulation board 200 and the base plate 400, effectively improving assembly efficiency.

[0038] Furthermore, the upper surface of the inner section 540 is provided with multiple adhesive grooves 542, which are arranged in a dense strip-like pattern. The arrangement of the adhesive grooves 542 is beneficial for retaining adhesive, so that the adhesive is not only present on the surface of the inner section 540 and the insulating heat insulation board 200, but also embedded in the adhesive grooves 542, thereby creating a three-dimensional structure for the adhesive, enhancing the bonding strength, and providing flow space for excess adhesive to avoid forming an uneven adhesive layer, thus maintaining the levelness of the insulating heat insulation board 200.

[0039] Using the above structure, during assembly, the electromagnetic coil 100 and magnetic core 300 are first fixed to the upper and lower sides of the insulating heat insulation plate 200, respectively. On the other side, multiple fixing brackets 500 are positioned and installed on the base plate 400. Then, adhesive is applied to the inner section 540 of the fixing brackets 500. Since all the limiting bosses 530 together define the accommodating space for the insulating heat insulation plate 200, the insulating heat insulation plate 200 can be directly positioned and placed in the accommodating space, thus simplifying the alignment steps between the insulating heat insulation plate 200 and the base plate 400. Compared with the prior art, the edges of the insulating heat insulation plate 200 are protected and supported by the fixing brackets 500, greatly reducing the risk of damage to the insulating heat insulation plate 200. Furthermore, the assembly efficiency and assembly accuracy of this utility model are improved, resulting in significant economic benefits.

[0040] In some embodiments of this utility model, since the electromagnetic coil 100 may vibrate during use due to factors such as poor coil quality, unstable magnetic field, and voltage fluctuations, all magnetic cores 300 and the base plate 400 are fixed to the base plate 400 with silicone sealant or silicone adhesive to effectively conduct the vibration of the electromagnetic coil 100 outwards, thus preventing the relative position between the electromagnetic coil 100 and the insulating heat insulation plate 200 from changing due to long-term vibration. Of course, in order to maintain the horizontal setting of the insulating heat insulation plate 200, the height of the support rib 541 of the fixing bracket 500 should be equal to the height of the magnetic core 300.

[0041] It is understood that, in addition to using glue-bonded structures, other bonding structures may be used in some other embodiments, such as mechanical connectors. However, since glue-bonded structures are more efficient and have lower costs, this utility model prefers to use glue-bonded structures.

[0042] like Figure 1 and Figure 3 As shown, in some embodiments of this utility model, in order to install a detection unit (not shown in the figures) at the center of the electromagnetic coil 100, the base plate 400 is pre-drilled with a second through hole 410 during production. The second through hole 410 is positioned opposite to the first through hole 210, thereby forming a mounting position 10 on the coil assembly that penetrates the insulating heat insulation plate 200 and the base plate 400. The mounting position 10 is connected to the detection unit, which has at least a temperature measuring element. The temperature measuring element has a real-time temperature measurement function to prevent overheating due to circuit failure.

[0043] In addition, the detection unit also has other sensors, such as a humidity sensor, to detect the internal humidity. When the humidity exceeds a set value, a dehumidifying fan is turned on to remove moisture, preventing short circuits in the internal circuitry due to excessive humidity.

[0044] An electromagnetic heating appliance according to a second aspect of the present invention includes a coil assembly according to the first aspect of the present invention, and further includes a housing (not shown in the drawings), the upper surface of which is a heating surface for supporting the heating vessel.

[0045] Since the electromagnetic heating appliance adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0046] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A coil disk assembly, characterized in that, include: An insulating heat insulation board (200) has an electromagnetic coil (100) fixedly connected to its upper surface, and a magnetic core (300) is fixedly connected to the lower bottom surface of the insulating heat insulation board (200). A base plate (400) is connected to at least two fixed supports (500). The upper surface of all fixed supports (500) is provided with limiting bosses (530). All limiting bosses (530) together define an accommodating space that can accommodate the insulating heat insulation board (200). The limiting bosses (530) divide the fixed supports (500) into an inner section (540) and an outer section (550). The inner section (540) is fixed to the lower bottom surface of the insulating heat insulation board (200). The inner section (540) is provided with a supporting rib (541) that abuts against the base plate (400). The outer section (550) is located on the periphery of the insulating heat insulation board (200).

2. The coil assembly according to claim 1, characterized in that: The magnetic core (300) is fixedly connected to the base plate (400).

3. The coil assembly according to claim 1 or 2, characterized in that: All the fixed structures are glued together.

4. The coil disk assembly according to claim 3, characterized in that: The upper surface of the inner section (540) is provided with a plurality of adhesive grooves (542).

5. The coil disk assembly according to claim 1, characterized in that: The base plate (400) is provided with a plurality of positioning holes (420), and each of the fixed brackets (500) is provided with at least two limiting buckles (510), and each of the limiting buckles (510) is connected to the corresponding positioning hole (420).

6. The coil disk assembly according to claim 5, characterized in that: The fixed bracket (500) has a spring mounting structure (520) reserved between all the limit buckles (510).

7. The coil disk assembly according to claim 1, characterized in that: The coil assembly has a mounting position (10) that runs through the insulating heat insulation plate (200) and the base plate (400), and the mounting position (10) is located at the center of the electromagnetic coil (100).

8. The coil disk assembly according to claim 7, characterized in that: The mounting position (10) is connected to a detection unit, which has at least a temperature measuring element.

9. The coil disk assembly according to claim 1, characterized in that: The magnetic core (300) is provided in multiple ways, and the multiple magnetic cores (300) radiate outward from the center position of the electromagnetic coil (100).

10. An electromagnetic heating appliance, characterized in that, include: shell; The coil assembly as claimed in any one of claims 1 to 9, wherein the coil assembly is mounted inside the housing.

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