Coil panel and cooking equipment

Abstract

The invention provides a coil panel and cooking equipment, and relates to the technical field of cooking equipment. The coil disc includes: a heat insulating member; the bracket is arranged on the heat insulation part; the wire harness is spirally wound on the support to form a coil, and the electrified coil can generate an electromagnetic field and heat radiation.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking appliances, and more particularly, to a coil disc and a cooking appliance. Background Art

[0002] In the related art, induction heating appliances such as induction cookers belong to flameless heating, with fast heating speed and high safety. However, induction heating appliances have poor compatibility with the material and shape of cookware. For example, they can achieve better heating power and heating effect for metal cookware with high magnetic permeability, while they cannot heat non-metal cookware with low magnetic permeability.

[0003] To solve the above problems, the related art proposes a hybrid heating method, that is, adding a resistive heating wire on the basis of the original induction coil to generate heat through the heating wire when induction heating is not possible. However, this product requires adding an additional heating wire coil, resulting in a high cost. Therefore, how to overcome the above technical defects has become an urgent technical problem to be solved. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] For this purpose, a first aspect of the present invention provides a coil disc.

[0006] A second aspect of the present invention provides a cooking appliance.

[0007] In view of this, a first aspect of the present invention provides a coil disc, which includes: a heat insulation component; a bracket disposed on the heat insulation component; and a wire harness that spirally winds around the bracket to form a coil, and the energized coil can generate an electromagnetic field and heat radiation.

[0008] This application defines a coil disc, which has an electromagnetic heating function and a heat radiation heating function. The coil disc includes a heat insulation component, a bracket, and a wire harness. The wire harness is wound around the bracket, and the heat insulation component is connected to the bracket. On the one hand, the heat insulation component can provide positioning and support for the bracket and the wire harness. On the other hand, the heat insulation component has excellent heat insulation performance and can prevent the heat transferred from the bracket from diffusing to the outside of the heat insulation component.

[0009] On this basis, the wire harness spirally winds around the bracket to wind a spiral coil on the bracket. After the spiral coil is energized, it can generate an electromagnetic field above it, and at the same time, due to the certain internal resistance of the coil, the energized coil can also generate heat radiation.

[0010] Among them, the electromagnetic field intensity and thermal radiation intensity generated by the coil can be distributed by changing the frequency of the supply current of the coil. Specifically, after a high-frequency current is applied to the coil, the coil can not only generate an electromagnetic field, but also generate heat due to its own impedance. Specifically, when the frequency of the alternating current applied to the coil increases, the impedance of the coil itself also increases. After the impedance of the coil increases, the heat generated when the current passes through the coil also increases. Therefore, the coil itself can generate sufficient heat, and these heats are transferred to the cooking appliance to heat the cooking appliance.

[0011] During the working process, if a magnetic conductive cooking appliance is placed above the coil disk, the magnetic conductive cooking appliance resonates in the electromagnetic field and generates eddy currents. Under the action of the eddy currents, the magnetic conductive cooking appliance is gradually heated up to cook food with the high-temperature magnetic conductive cooking appliance. At the same time, the thermal radiation generated by the coil can also provide auxiliary heating for the magnetic conductive cooking appliance to improve the heating power.

[0012] If a non-magnetic conductive cooking appliance is placed above the coil disk, although the non-magnetic conductive cooking appliance cannot generate eddy currents through resonance in the electromagnetic field, the thermal radiation generated by the coil can directly heat the non-magnetic conductive cooking appliance, so as to cook food with the high-temperature non-magnetic conductive cooking appliance. And because a large amount of thermal radiation is generated by the coil, when the user tosses the pan, the actual heating effect of the coil disk on the cooking appliance will not be affected by the position migration of the cooking appliance, thus simulating the effect of open-fire cooking.

[0013] It can be seen from this that the coil disk defined in this application has both electromagnetic heating ability and thermal radiation heating ability. When the cooking appliance type is a cooking appliance with a high magnetic permeability such as a metal cooking appliance, the cooking appliance is heated by the traditional induction heating method to form eddy currents in the cooking appliance. When the cooking appliance type is a cooking appliance with a low magnetic permeability such as a non-metal cooking appliance, through a higher oscillation frequency, based on the skin effect of the coil, the impedance of the coil itself is increased. The coil is heated by increasing the impedance of the coil itself, and the cooking appliance is heated by the heat generated by the coil. Thus, without changing the original hardware structure of the induction heating cooking appliance, the induction heating cooking appliance can heat the non-metal cooking appliance, improving the versatility of the induction heating cooking appliance, and thus solving the high-cost technical problem existing in the related technology. Furthermore, the technical effects of optimizing the coil disk structure, broadening the applicable range of the coil disk, improving the practicality of the coil disk, and reducing the production cost of the coil disk are achieved.

[0014] Specifically, the electromagnetic heating ability and thermal radiation heating ability of the coil disk can be distributed by regulating the frequency of the driving current to form a variety of different heating modes.

[0015] Specifically, the wire harness is made of a high-temperature resistant metal material and the wire harness needs to withstand at least 600 °C.

[0016] Specifically, the material of the heat insulation component can be selected as silica white.

[0017] In addition, the coil disk provided by the present invention may further have the following additional technical features:

[0018] In some technical solutions of the present invention, optionally, the number of wire harnesses is N; the range of N is: greater than or equal to 1 and less than or equal to 6.

[0019] In this technical solution, the coil includes N strands of continuously wound wire harnesses. Specifically, N is an integer greater than or equal to 1 and less than or equal to 6, and the value of N can be selected according to the rated heating power of the coil disk, so as to broaden the model of the coil disk and enable the coil disk to adapt to different types and models of cooking equipment.

[0020] Specifically, when the coil disk is applied to an induction cooker or an integrated stove, N takes 1 or 2.

[0021] In some technical solutions of the present invention, optionally, when N is greater than 1, N wire harnesses are wound in parallel; N wire harnesses are connected in parallel.

[0022] In this technical solution, when the coil is wound by multiple wire harnesses together, the multiple wire harnesses are wound in parallel along a spiral line, that is, the winding directions of the multiple wire harnesses are the same and arranged side by side, so as to wind a spiral coil by the multiple parallel wire harnesses.

[0023] By winding N wire harnesses in parallel, the coincidence degree of the heat radiation coverage area and the electromagnetic field coverage area generated by the N wire harnesses can be improved, so as to improve the electromagnetic field strength and heat radiation strength in the specified area above the coil disk, so as to improve the heating capacity of the coil disk. At the same time, the space occupied by parallel winding is small, which is beneficial to the miniaturization design and lightweight design of the coil disk.

[0024] Specifically, in the radial direction of the coil from the inside to the outside, the spacing between the wire harnesses gradually decreases.

[0025] In this technical solution, in the radial direction of the coil and from the inside to the outside, the spacing between the wire harnesses in different layers gradually decreases, that is, the density of the wire harnesses is different. The spacing between the wire harnesses in the inner layer is large, and the spacing between the wire harnesses in the outer layer is small.

[0026] By defining the above density distribution method, the outer part of the coil can be wound more densely than the inner part, with a smaller turn pitch, corresponding to a stronger magnetic field distribution and infrared energy radiation, which ensures that the side wall of the cooking appliance can also be effectively heated by the coil. At the same time, this density winding method can also prevent the magnetic field and infrared energy distribution from being too concentrated, and adjust the proportion of infrared heating and electromagnetic induction heating in each area through the density, so as to achieve the technical effect of improving the heating uniformity and reliability of the coil disk.

[0027] In some technical solutions of the present invention, optionally, the wire harness includes: a first wire harness, the first wire harness includes a plurality of segment parts, and the plurality of segment parts are connected in series; wherein, in the series connection direction of the plurality of segment parts, the shapes of two adjacent segment parts are different, and / or the materials of two adjacent segment parts are different.

[0028] In this technical solution, the wire harness includes a first wire harness, and the first wire harness is divided into a plurality of series-connected segment parts according to the shape and / or material. Among them, the materials and / or shapes of two adjacent segment parts are different in the series connection direction. By distributing different materials and shapes on the first wire harness, the enclosed coil has different heating properties in different regions. For example, the heat radiation amount of the outer ring of the coil can be increased by changing the material and shape of the outer ring of the coil to concentrate the heating on the side wall of the cooking appliance and improve the heating effect, or the heat radiation amount of the corresponding region can be increased by selecting a material with a higher resistance in a certain segment part.

[0029] In some technical solutions of the present invention, optionally, the wire harness further includes: a second wire harness, which is connected in parallel with at least one segment part in the first wire harness.

[0030] In this technical solution, the wire harness further includes a second wire harness, and the second wire harness is wound in parallel with the whole first wire harness, or the second wire harness is connected in parallel with some segment parts in the first wire harness. By connecting the second wire harness in parallel, the heating capacity of at least some regions in the coil can be improved to form a high-temperature region above the coil, which is convenient for realizing concentrated heating.

[0031] In some technical solutions of the present invention, optionally, the first wire harness includes a first segment part, a second segment part, and a third segment part, and the second segment part is connected in series between the first segment part and the third segment part; the first segment part and the third segment part are wound along an arc, and the second segment part is wound along a wavy line; the second wire harness is connected in parallel with the second segment part.

[0032] In this technical solution, the first wire harness is divided into a first section, a second section, and a third section in the extending direction. The first section, the second section, and the third section are connected in series in the extending direction of the first wire harness, and the first section, the second section, and the third section are distinguished by their shapes. Specifically, the first section and the third section are coiled along an arc, and the axis of the arc coincides with the axis of the coil formed by the coiling. The second section is coiled along a broken line and / or a wavy line. Specifically, the second section can be coiled only along one of the broken line and the wavy line, or the first half of the second section can be coiled along the broken line and the second half can be coiled along the wavy line. This technical solution does not make a rigid limitation on this.

[0033] Compared with the relatively smooth arc, the wavy line and the broken line have a longer extension distance when coiled by the same angle, thereby extending the transmission path of the current in the second section, correspondingly increasing the internal resistance of the second section. After being energized, the first section and the third section with smaller internal resistance generate less heat and have a smaller infrared radiation amount. Correspondingly, the electromagnetic fields generated by the first section and the third section are relatively stable and have a higher intensity. After being energized, the second section with a larger internal resistance generates more heat and has a larger infrared radiation amount. Correspondingly, the shape of the second section is changed by the wavy line or the broken line, and the stability of the generated electromagnetic field is poor and the intensity is low.

[0034] It can be seen that by limiting the shape of the coiling path of the first wire harness, the distribution ratio of the electromagnetic heating capacity and the infrared heating capacity of different sections of the first wire harness can be adjusted. Specifically, more electromagnetic heating capacity is distributed through the arc path, and more infrared heating capacity is distributed through the broken line and the wavy line. Thus, when the coil takes into account the electromagnetic heating requirements of the magnetic cooking appliance and the infrared heating requirements of the non-magnetic cooking appliance at the same time, a heat radiation concentration area is distributed, avoiding that the reused coil cannot meet the rapid heating requirement of the non-magnetic cooking appliance, and further improving the quality of the cooked food.

[0035] On this basis, the second wire harness is wound in parallel with the second section, and the second wire harness is connected in parallel with the second section. By setting the second wire harness, the heat radiation amount in the area where the second section is located can be further increased, and a high-temperature area is formed in the middle layer of the coil, so that the non-magnetic cooking appliance can quickly heat up in the high-temperature area.

[0036] In some technical solutions of the present invention, optionally, the coil includes a plurality of layers in the radial direction, and the layers are circular or elliptical.

[0037] In this technical solution, a plurality of layers are formed during the spiral coiling of the wire harness, and the shapes of each layer are the same but the sizes are different. On this basis, the layers of the coil are circular or elliptical, so that the formed coil can adapt to the circular bottom surface of common cooking appliances on the market, ensuring that the coil can provide effective heating for the cooking appliance.

[0038] In some technical solutions of the present invention, optionally, the coil includes a plurality of coil layers in a radial direction, and the coil layers are polygonal.

[0039] In this technical solution, the wire harness forms multiple coils during the spiral winding process, wherein each coil has the same shape but different sizes. On this basis, each coil layer is polygonal, and each coil layer can be selected as a regular hexagon. By constructing the coil layers as polygons, the difficulty of winding the wire harness can be reduced, and the number of wire harness positioning points on the bracket can be reduced, thereby achieving the technical effect of reducing the process complexity of the coil disk and reducing the cost of the coil disk.

[0040] In some technical solutions of the present invention, optionally, the coil disk further includes: a supporting component connected to the thermal insulation component; and a magnetic component disposed between the supporting component and the thermal insulation component.

[0041] In this technical solution, the coil disk also includes a support component and a magnetic component. The support component is connected to the heat insulation component, and the support component can provide support and protection for the heat insulation component, the bracket and the wiring harness. After power is turned on, the heat radiation generated by the coil is blocked by the heat insulation component to reduce the working temperature of the support component and prevent the support component from melting at high temperature.

[0042] On this basis, the coil disk also includes a magnetic part, which is arranged on the support component and is located between the support component and the coil. By arranging the magnetic part, the distribution of the electromagnetic field on the side of the coil away from the cooking utensil can be changed, so that the electromagnetic field generated by the coil can be concentrated on the side where the cooking utensil is located, so as to centrally heat the cooking utensil, thereby achieving the technical effect of improving the electromagnetic heating efficiency and electromagnetic heating energy efficiency.

[0043] In some technical solutions of the present invention, optionally, the supporting component includes a mounting groove, and the heat insulating component, the magnetic component, the bracket and the wiring harness are located in the mounting groove.

[0044] In this technical solution, the supporting component includes a bottom wall and side walls, and the side walls surround the bottom wall. The bottom wall and the side walls enclose an installation groove. After assembly, the thermal insulation component and the magnetic component are located inside the installation groove, and the side walls surrounding the four sides can provide shielding and protection for the magnetic component, thermal insulation component, bracket and wiring harness.

[0045] Specifically, a groove is provided on the bottom wall of the supporting component, the shape of the groove matches the shape of the magnetic component, and the magnetic component is embedded in the groove to reduce the possibility of misalignment or even falling off of the magnetic component.

[0046] In some technical solutions of the present invention, optionally, the magnetic member is in a strip shape, and the length direction of the magnetic member is consistent with the radial direction of the coil.

[0047] In this technical solution, the magnetic member is strip-shaped, and the length direction of the magnetic member is consistent with the radial direction of the coil. By arranging the magnetic member along the radial direction of the coil, the deflection effect of the electromagnetic field can be improved, so that the electromagnetic field acts intensively on the cooking appliance on the other side.

[0048] On this basis, the number of magnetic members is multiple, and the multiple magnetic members are evenly distributed in the circumferential direction of the coil. By arranging multiple evenly distributed magnetic members, the dead angle of magnetic field deflection on the side of the coil away from the cooking appliance can be avoided, thereby further improving the electromagnetic heating effect of the coil disk.

[0049] On this basis, the number of magnetic members is multiple, and the multiple magnetic members are evenly distributed in the circumferential direction of the coil. By arranging multiple evenly distributed magnetic members, the dead angle of magnetic field deflection on the side of the coil away from the cooking appliance can be avoided, thereby further improving the electromagnetic heating effect of the coil disk.

[0050] The second aspect of the present invention provides a cooking device, which includes: a main body; a coil disk as described in any of the above technical solutions, provided on the main body.

[0051] In this technical solution, a cooking device provided with the coil disk as described in any of the above technical solutions is proposed. Therefore, this cooking device has the advantages of the coil disk as described in any of the above technical solutions and can achieve the technical effects that the coil disk as described in any of the above technical solutions can achieve. To avoid repetition, it will not be elaborated here.

[0052] On this basis, the cooking device further includes a main body, which is the main frame structure of the cooking device. The main body is used to position, support and protect other working structures on the cooking device. The coil disk can be arranged inside the main body, and the coil disk can also be embedded on the top of the main body to heat the cooking appliance placed on the cooking device through the coil disk.

[0053] The additional aspects and advantages of the present invention will become obvious in the following description part, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0055] Figure 1 Shows an exploded view of a coil disk according to an embodiment of the present invention;

[0056] Figure 2 Shows a schematic structural diagram of a coil disk according to an embodiment of the present invention;

[0057] Figure 3Shows a schematic structural diagram of a coil disk according to an embodiment of the present invention;

[0058] Figure 4 Shows a schematic structural diagram of a coil according to an embodiment of the present invention;

[0059] Figure 5 Shows a schematic structural diagram of a coil according to an embodiment of the present invention;

[0060] Figure 6 Shows a schematic structural diagram of a coil according to an embodiment of the present invention;

[0061] Figure 7 Shows a schematic structural diagram of a coil disk according to an embodiment of the present invention;

[0062] Figure 8 Shows a schematic structural diagram of a coil disk according to an embodiment of the present invention;

[0063] Figure 9 Is Figure 8 A partial enlarged view of the coil disk in the A area in the shown embodiment;

[0064] Figure 10 Shows a schematic structural diagram of a coil disk according to an embodiment of the present invention;

[0065] Figure 11 Is Figure 10 A partial enlarged view of the coil disk in the B area in the shown embodiment;

[0066] Figure 12 Shows an exploded view of a coil disk according to an embodiment of the present invention;

[0067] Figure 13 Shows a schematic structural diagram of a coil disk according to an embodiment of the present invention;

[0068] Figure 14 Shows an exploded view of a coil disk according to an embodiment of the present invention;

[0069] Figure 15 Shows a schematic structural diagram of a coil disk according to an embodiment of the present invention;

[0070] Figure 16 Shows a schematic structural diagram of a coil disk according to an embodiment of the present invention;

[0071] Figure 17 Shows a schematic structural diagram of a cooking device according to an embodiment of the present invention.

[0072] Among them, Figures 1 to 17 The corresponding relationship between the reference numerals and the component names in is:

[0073] 100 Coil disk, 110 Heat insulation component, 120 Bracket, 130 Wiring harness, 132 Coil, 1322 Coil layer, 134 First wiring harness, 1342 First section, 1344 Second section, 1346 Third section, 136 Second wiring harness, 140 Support component, 1402 Installation groove, 150 Magnetic component, 200 Cooking appliance, 300 Cooking device, 310 Body. Detailed implementation manners

[0074] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0075] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0076] The following refers to Figures 1 to 17 Describe a coil disk and a cooking device according to some embodiments of the present invention.

[0077] As Figure 1 , Figure 2 , Figure 3 and Figure 16 shown, an embodiment of the present invention provides a coil disk 100, which includes: a heat insulation component 110; a bracket 120 disposed on the heat insulation component 110; a wiring harness 130 that spirally winds around the bracket 120 to form a coil 132, and the energized coil 132 can generate an electromagnetic field and thermal radiation.

[0078] The present application defines a coil disk 100, which has an electromagnetic heating function and a thermal radiation heating function. The coil disk 100 includes a heat insulation component 110, a bracket 120 and a wiring harness 130. The wiring harness 130 is wound around the bracket 120, and the heat insulation component 110 is connected to the bracket 120. On the one hand, the heat insulation component 110 can provide positioning and support for the bracket 120 and the wiring harness 130. On the other hand, the heat insulation component 110 has excellent heat insulation performance and can prevent the heat transmitted from the bracket 120 from diffusing to the outside of the heat insulation component 110.

[0079] On this basis, the wiring harness 130 spirally winds around the bracket 120 to wind a spiral coil 132 on the bracket 120. After the spiral coil 132 is energized, it can generate an electromagnetic field above it. At the same time, due to the certain internal resistance of the coil 132, the energized coil 132 can also generate thermal radiation.

[0080] Among them, the electromagnetic field strength and thermal radiation intensity generated by the coil 132 can be distributed by changing the frequency of the supply current of the coil 132. Specifically, after a high-frequency current is applied to the coil 132, the coil 132 can not only generate an electromagnetic field, but also generate heat due to its own impedance. Specifically, when the frequency of the alternating current applied to the coil 132 increases, the impedance of the coil 132 itself also increases. After the impedance of the coil 132 increases, the heat generated when the current passes through the coil 132 also increases. Therefore, the coil 132 can generate enough heat by itself, and these heats are transferred to the cooking appliance 200 to heat the cooking appliance 200.

[0081] During the working process, if a magnetic conductive cooking appliance 200 is placed above the coil disk 100, the magnetic conductive cooking appliance 200 resonates in the electromagnetic field and generates eddy currents. Under the action of the eddy currents, the magnetic conductive cooking appliance 200 is gradually heated up to cook food through the high-temperature magnetic conductive cooking appliance 200. At the same time, the thermal radiation generated by the coil 132 can also provide auxiliary heating for the magnetic conductive cooking appliance 200 to improve the heating power.

[0082] If a non-magnetic conductive cooking appliance 200 is placed above the coil disk 100, although the non-magnetic conductive cooking appliance 200 cannot generate eddy currents through resonance in the electromagnetic field, the thermal radiation generated by the coil 132 can directly heat the non-magnetic conductive cooking appliance 200, so as to cook food through the high-temperature non-magnetic conductive cooking appliance 200. And because the coil 132 generates a large amount of thermal radiation, when the user tosses the pan, the actual heating effect of the coil disk 100 on the cooking appliance 200 will not be affected by the position migration of the cooking appliance 200, thus simulating the effect of open-fire cooking.

[0083] It can be seen that the coil disk 100 defined in this application has both electromagnetic heating ability and thermal radiation heating ability. When the cooking appliance 200 is a metal cooking appliance or other cooking appliances 200 with a high magnetic permeability, the cooking appliance 200 is heated by forming eddy currents in the cooking appliance 200 through traditional inductive heating. When the cooking appliance 200 is a non-metal cooking appliance or other cooking appliances 200 without a high magnetic permeability, then through a higher oscillation frequency, based on the skin effect of the coil 132, the impedance of the coil 132 itself is increased, and the coil 132 is heated by increasing the impedance of the coil 132 itself, and the cooking appliance 200 is heated by the heat generated by the heating of the coil 132. Thus, without changing the hardware structure of the original inductive heating cooking appliance 200, the inductive heating cooking appliance 200 can heat non-metal cooking appliances, improving the versatility of the inductive heating cooking appliance 200, and thus solving the high-cost technical problems existing in the related technologies. Furthermore, the technical effects of optimizing the structure of the coil disk 100, broadening the applicable range of the coil disk 100, enhancing the practicality of the coil disk 100, and reducing the production cost of the coil disk 100 are achieved.

[0084] Specifically, the electromagnetic heating ability and thermal radiation heating ability of the coil disk 100 can be allocated by regulating the frequency of the driving current to form a variety of different heating modes.

[0085] Specifically, the wire harness 130 is made of a high-temperature-resistant metal material, and the wire harness 130 needs to withstand at least 600 °C.

[0086] Specifically, the material of the heat insulation component 110 can be selected as silica white.

[0087] Specifically, the material of the bracket 120 is selected as ceramic.

[0088] In some embodiments of the present invention, optionally, the number of the wire harnesses 130 is N; the range of N is: greater than or equal to 1 and less than or equal to 6.

[0089] In this embodiment, the coil 132 includes N strands of wire harnesses 130 wound continuously. Specifically, N is an integer greater than or equal to 1 and less than or equal to 6, and the value of N can be selected according to the rated heating power of the coil disk 100, so as to broaden the models of the coil disk 100 and enable the coil disk 100 to adapt to different types and models of cooking devices 300.

[0090] Specifically, when the coil disk 100 is applied to an induction cooker or an integrated stove, N takes 1 or 2.

[0091] Such as Figure 8 、 Figure 9 、 Figure 10 and Figure 11As shown, in some embodiments of the present invention, optionally, when N is greater than 1, N wire bundles 130 are wound in parallel; the N wire bundles 130 are connected in parallel.

[0092] In this embodiment, when the coil 132 is wound jointly by multiple wire bundles 130, the multiple wire bundles 130 are wound in parallel along a spiral line, that is, the winding directions of the multiple wire bundles 130 are the same and arranged side by side, so as to wind a spiral coil 132 through the multiple juxtaposed wire bundles 130.

[0093] By winding N wire bundles 130 in parallel, the coincidence degree of the heat radiation coverage area and the electromagnetic field coverage area generated by the N wire bundles 130 can be improved, so as to improve the electromagnetic field intensity and heat radiation intensity in the specified area above the coil disk 100, so as to improve the heating capacity of the coil disk 100. At the same time, the space occupied by parallel winding is small, which is beneficial to the miniaturization design and lightweight design of the coil disk 100.

[0094] Specifically, in the radial direction of the coil 132 from the inside to the outside, the spacing between the wire bundles 130 gradually decreases.

[0095] In this embodiment, in the radial direction of the coil 132 from the inside to the outside, the spacing between the wire bundles 130 between different layers 1322 gradually decreases, that is, the density of the wire bundles 130 is different. The spacing between the inner wire bundles 130 is large, and the spacing between the outer wire bundles 130 is small.

[0096] By defining the above density distribution mode, the outer part of the coil 132 can be wound more densely and the turn spacing is smaller compared with the inner part, and the corresponding magnetic field distribution and infrared energy radiation are stronger, which ensures that the side wall of the cooking appliance 200 can also be effectively heated by the coil 132. At the same time, this density winding mode can also avoid the over-concentration of the magnetic field and infrared energy distribution, and adjust the proportion of infrared heating and electromagnetic induction heating in each area through the density, so as to achieve the technical effect of improving the heating uniformity and reliability of the coil disk 100.

[0097] As Figure 7 and Figure 8 shown, in some embodiments of the present invention, optionally, the wire bundle 130 includes: a first wire bundle 134, the first wire bundle 134 includes a plurality of segment parts, and the plurality of segment parts are connected in series; wherein, in the series connection direction of the plurality of segment parts, the shapes of two adjacent segment parts are different, and / or the materials of two adjacent segment parts are different.

[0098] In this embodiment, the wire harness 130 includes a first wire harness 134, and the first wire harness 134 is divided into a plurality of serially connected segment parts according to shape and / or material, wherein two adjacent segment parts in the serial connection direction are different in material and / or shape. By allocating different materials and shapes on the first wire harness 134, the enclosed coil 132 has different heating properties in different regions. For example, the heat radiation amount of the outer ring of the coil 132 can be increased by changing the material and shape of the outer ring of the coil 132 to concentrate the heating on the side wall of the cooking appliance 200 and improve the heating effect, or the heat radiation amount of the corresponding region can be increased by selecting a material with a higher resistance in a certain segment part.

[0099] As Figure 8 and Figure 9 shown, in some embodiments of the present invention, optionally, the wire harness 130 further includes: a second wire harness 136, which is connected in parallel with at least one segment part of the first wire harness 134.

[0100] In this embodiment, the wire harness 130 further includes a second wire harness 136, and the second wire harness 136 is wound in parallel with the entire first wire harness 134, or the second wire harness 136 is connected in parallel with some segment parts of the first wire harness 134. By connecting the second wire harness 136 in parallel, the heating capacity of at least some regions in the coil 132 can be improved to form a high-temperature region above the coil 132, which is convenient for realizing concentrated heating.

[0101] As Figure 7 、 Figure 8 and Figure 9 shown, in some embodiments of the present invention, optionally, the first wire harness 134 includes a first segment part 1342, a second segment part 1344, and a third segment part 1346, and the second segment part 1344 is serially connected between the first segment part 1342 and the third segment part 1346; the first segment part 1342 and the third segment part 1346 are wound along an arc, and the second segment part 1344 is wound along a wavy line; the second wire harness 136 is connected in parallel with the second segment part 1344.

[0102] In this embodiment, the first wire harness 134 is divided into a first segment part 1342, a second segment part 1344, and a third segment part 1346 in the extension direction. The first segment part 1342, the second segment part 1344, and the third segment part 1346 are serially connected in the extension direction of the first wire harness 134, and the first segment part 1342, the second segment part 1344, and the third segment part 1346 are distinguished by shape. Specifically, the first segment part 1342 and the third segment part 1346 are wound along an arc, and the axis of the arc coincides with the axis of the coil 132 formed by the winding. The second segment part 1344 is wound along a broken line and / or a wavy line. Specifically, the second segment part 1344 can be wound only along one of the broken line and the wavy line, or the first half of the second segment part 1344 can be wound along the broken line and the second half can be wound along the wavy line. This embodiment does not make a rigid limitation on this.

[0103] Compared with a relatively smooth arc, the wavy line and the broken line have a longer extension distance when winding around the same angle, thereby prolonging the transmission path of the current in the second section 1344, correspondingly increasing the internal resistance of the second section 1344. After being energized, the first section 1342 and the third section 1346 with relatively small internal resistance generate less heat and have a smaller infrared radiation amount. Correspondingly, the electromagnetic fields generated by the first section 1342 and the third section 1346 are relatively stable and have a higher intensity. After being energized, the second section 1344 with a larger internal resistance generates more heat and has a larger infrared radiation amount. Correspondingly, the shape of the second section 1344 is changed due to the wavy line or the broken line, and the stability of the generated electromagnetic field is poor and the intensity is low.

[0104] It can be seen from this that by limiting the shape of the winding path of the first wire bundle 134, the distribution ratio of the electromagnetic heating ability and the infrared heating ability of different sections of the first wire bundle 134 can be adjusted. Specifically, more electromagnetic heating ability is distributed through the arc path, and more infrared heating ability is distributed through the broken line and the wavy line. Thus, when the coil 132 simultaneously takes into account the electromagnetic heating requirements of the magnetic cooking appliance 200 and the infrared heating requirements of the non-magnetic cooking appliance 200, a heat radiation concentration area is distributed, avoiding that the reused coil 132 cannot meet the rapid heating requirements of the non-magnetic cooking appliance 200, and further improving the quality of the cooked food.

[0105] On this basis, the second wire bundle 136 is wound in parallel with the second section 1344, and the second wire bundle 136 is connected in parallel with the second section 1344. By setting the second wire bundle 136, the heat radiation amount in the area where the second section 1344 is located can be further increased, and a high-temperature area is formed in the middle layer 1322 of the coil 132, so that the non-magnetic cooking appliance 200 can quickly heat up in the high-temperature area.

[0106] As Figure 4 and Figure 6 shown, in some embodiments of the present invention, optionally, the coil 132 includes a plurality of layers 1322 in the radial direction, and the layers 1322 are circular or elliptical.

[0107] Figure 4 The arrow a in Figure 6 shows the radial direction of the coil,

[0108] and the arrow c in

[0109] As Figure 5 shown, in some embodiments of the present invention, optionally, the coil 132 includes a plurality of turns 1322 in the radial direction, and the turns 1322 are polygonal.

[0110] Figure 5 Arrow b in

[0111] shows the radial direction of the coil. In this embodiment, the wire harness 130 forms a plurality of turns 1322 during the spiral winding process, and each turn 1322 has the same shape but different sizes. On this basis, each turn 1322 of the coil 132 is polygonal, and specifically, each turn 1322 of the coil 132 can be selected as a regular hexagon. By constructing the turns 1322 of the coil 132 as polygonal, the winding difficulty of the wire harness 130 can be reduced, and the number of positioning points of the wire harness 130 on the bracket 120 can be reduced, thereby achieving the technical effects of reducing the process complexity of the coil disk 100 and reducing the cost of the coil disk 100.

[0112] As Figure 12 , Figure 13 , Figure 14 and Figure 15 shown, in some embodiments of the present invention, optionally, the coil disk 100 further includes: a support member 140, connected to the heat insulation member 110; and a magnetic member 150, disposed between the support member 140 and the heat insulation member 110.

[0113] In this embodiment, the coil disk 100 further includes a support member 140 and a magnetic member 150. The support member 140 is connected to the heat insulation member 110, and the support member 140 can provide support and protection for the heat insulation member 110, the bracket 120, and the wire harness 130. Among them, the heat radiation generated by the coil 132 after being energized is blocked by the heat insulation member 110 to reduce the working temperature of the support member 140 and prevent the support member 140 from melting at high temperatures.

[0114] On this basis, the coil disk 100 further includes a magnetic member 150. The magnetic member 150 is disposed on the support member 140, and the magnetic member 150 is located between the support member 140 and the coil 132. By providing the magnetic member 150, the distribution of the electromagnetic field on the side of the coil 132 away from the cooking appliance 200 can be changed, so that the electromagnetic field generated by the coil 132 can be concentrated and used on the side where the cooking appliance 200 is located, so as to perform concentrated heating on the cooking appliance 200, achieving the technical effects of improving the electromagnetic heating efficiency and the electromagnetic heating energy efficiency.

[0115] As Figure 12 , Figure 13 , Figure 14 and Figure 15As shown, in some embodiments of the present invention, optionally, the support member 140 includes a mounting groove 1402, and the heat insulation member 110, the magnetic member 150, the bracket 120, and the wire harness 130 are located in the mounting groove 1402.

[0116] In this embodiment, the support member 140 includes a bottom wall and a side wall. The side wall surrounds the bottom wall on all sides, and the bottom wall and the side wall enclose the mounting groove 1402. After assembly, the heat insulation member 110 and the magnetic member 150 are located inside the mounting groove 1402, and the surrounding side wall can provide shielding and protection for the magnetic member 150, the heat insulation member 110, the bracket 120, and the wire harness 130.

[0117] Specifically, the bottom wall of the support member 140 is provided with a groove, and the shape of the groove is adapted to the shape of the magnetic member 150. The magnetic member 150 is embedded in the groove to reduce the possibility of the magnetic member 150 being misaligned or even falling off.

[0118] As Figure 14 shown, in some embodiments of the present invention, optionally, the magnetic member 150 is strip-shaped, and the length direction of the magnetic member 150 is consistent with the radial direction of the coil 132.

[0119] In this embodiment, the magnetic member 150 is strip-shaped, and the length direction of the magnetic member 150 is consistent with the radial direction of the coil 132. By arranging the magnetic member 150 along the radial direction of the coil 132, the deflection effect of the electromagnetic field can be improved to concentrate the electromagnetic field on the cooking appliance 200 on the other side.

[0120] On this basis, the number of the magnetic members 150 is multiple, and the multiple magnetic members 150 are evenly distributed in the circumferential direction of the coil 132. By providing multiple evenly distributed magnetic members 150, the magnetic field deflection dead angle on the side of the coil 132 facing away from the cooking appliance 200 can be avoided, thereby further improving the electromagnetic heating effect of the coil disk 100.

[0121] On this basis, the number of the magnetic members 150 is multiple, and the multiple magnetic members 150 are evenly distributed in the circumferential direction of the coil 132. By providing multiple evenly distributed magnetic members 150, the magnetic field deflection dead angle on the side of the coil 132 facing away from the cooking appliance 200 can be avoided, thereby further improving the electromagnetic heating effect of the coil disk 100.

[0122] As Figure 17 shown, an embodiment of the present invention provides a cooking device 300, which includes: a main body 310; and the coil disk 100 as described in any of the above embodiments, which is provided on the main body 310.

[0123] In this embodiment, a cooking device 300 provided with the coil disk 100 in any of the above embodiments is proposed. Therefore, the cooking device 300 has the advantages of the coil disk 100 in any of the above embodiments and can achieve the technical effects that the coil disk 100 in any of the above embodiments can achieve. To avoid repetition, it will not be elaborated here.

[0124] On this basis, the cooking device 300 further includes a main body 310. The main body 310 is the main frame structure of the cooking device 300. The main body 310 is used to position, support and protect other working structures on the cooking device 300. The coil disk 100 can be disposed inside the main body 310, and the coil disk 100 can also be embedded in the top of the main body 310 to heat the cooking utensil 200 placed on the cooking device 300 through the coil disk 100.

[0125] It should be clear that in the claims, the specification and the drawings of the present invention, the term "a plurality of" means two or more, unless otherwise explicitly defined. The orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and making the description process simpler, rather than indicating or implying that the device or element referred to must have the specific orientation, be constructed and operated in the specific orientation. Therefore, these descriptions should not be construed as limitations on the present invention; terms such as "connection", "installation", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances of the above data.

[0126] In the claims, the specification and the drawings of the present invention, the description of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, the specification and the drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0127] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A coil disk, characterized in that, it includes: a heat insulation component; a bracket provided on the heat insulation component; a wire harness, the wire harness is spirally wound on the bracket to form a coil, and the energized coil can generate an electromagnetic field and heat radiation.

2. The coil disk according to claim 1, characterized in that, the number of the wire harnesses is N; the range of N is: greater than or equal to 1 and less than or equal to 6.

3. The coil disk according to claim 2, characterized in that, when N is greater than 1, the N wire harnesses are wound in parallel; the N wire harnesses are connected in parallel.

4. The coil disk according to claim 1, characterized in that, the wire harness includes: a first wire harness, the first wire harness includes a plurality of segment parts, and the plurality of segment parts are connected in series; wherein, in the series connection direction of the plurality of segment parts, the shapes of two adjacent segment parts are different, and / or the materials of two adjacent segment parts are different.

5. The coil disk according to claim 4, characterized in that, the wire harness further includes: a second wire harness connected in parallel with at least one segment part of the first wire harness.

6. The coil disk according to claim 5, characterized in that, the first wire harness includes a first segment part, a second segment part and a third segment part, and the second segment part is connected in series between the first segment part and the third segment part; the first segment part and the third segment part are wound along an arc, and the second segment part is wound along a wavy line and / or a broken line; the second wire harness is connected in parallel with the second segment part.

7. The coil disk according to claim 1, characterized in that, the coil includes a plurality of layers in the radial direction, and the layers are circular or elliptical.

8. The coil disk according to claim 1, characterized in that, the coil includes a plurality of layers in the radial direction, and the layers are polygonal.

9. The coil disk according to any one of claims 1 to 8, characterized in that, it further includes: a support component connected to the heat insulation component; a magnetic component provided between the support component and the heat insulation component.

10. The coil disk according to claim 9, characterized in that, the support component includes a mounting groove, and the bracket, the wire harness, the heat insulation component and the magnetic component are located in the mounting groove.

11. The coil disk according to claim 9, characterized in that, the magnetic component is strip-shaped, and the length direction of the magnetic component is consistent with the radial direction of the coil.

12. A cooking device, characterized in that, it includes: a main body; the coil disk according to any one of claims 1 to 11, provided on the main body.

Images