Cooking utensil

Abstract

The cooking utensil comprises a shell, a wire coil assembly, a magnet vane, a circuit board assembly and a fan assembly, the shell is provided with an air inlet and an air outlet, the wire coil assembly is arranged in the shell and comprises a support and a coil unit, the support is provided with a first side and a second side which are opposite in the first direction, and the magnet vane is arranged on the first side. The coil unit is arranged on the support and comprises multiple turns of coils, each turn of coil comprises a first wire section and a second wire section which are opposite in current and connected with each other, and the multiple turns of coils are wound on the first side and the second side of the support, so that multiple first wire sections are distributed on the first side of the support, and multiple second wire sections are distributed on the second side of the support. The magnet vane is located on the second side of the support and located on the side, back to the support, of the second wire section, a via hole is formed in the magnet vane, the circuit board assembly is arranged in the shell, and the fan assembly is arranged in the shell. The utility model aims to prevent high temperature rise of a wire coil assembly, a magnetism isolating plate and a circuit board assembly under a magnetism isolating condition.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking utensils, in particular to a cooking utensil. Background Art

[0002] Cooking utensils are used to heat heating containers such as pots through electromagnetic heating coils. Figure 1a to Figure 1c , Figure 1a and Figure 1b The arrows are the directions of magnetic flux lines. Figure 1c The arrow in the figure represents an eddy current. The winding method of the wire reel 100' in the existing cooking utensils is single-sided winding. Due to the constraints of working parameters such as working current and frequency, the heating height of this wire reel after coupling with the pot is low, and only eddy currents can be generated at the bottom of the pot, and it is difficult to effectively heat the side wall of the pot. Therefore, how to improve the heating effect on the side wall of the pot becomes a technical problem that needs to be solved by technical personnel in this field. Utility Model Content

[0003] In order to improve the heating effect of the wire reel on the side wall of the cookware, the inventor first thought of using a double-sided (first side and second side) winding method to increase the heating height after coupling with the cookware, and thus effectively heat the side wall of the cookware. However, the winding on the first side of the double-sided winding wire reel has a strong magnetic field, which will heat the opposite area and objects near the side. Therefore, it is necessary to add a magnetic isolation plate on the second side of the double-sided winding wire reel. The magnetic isolation plate will also be heated, causing a high temperature rise, and will also radiate to the coil, causing a high temperature rise of the coil, which will have an adverse effect on the reliability of the cooking utensil and affect the life of the cooking utensil.

[0004] The main purpose of the utility model is to provide a cooking utensil, which is intended to effectively dissipate heat from a wire reel assembly, a magnetic isolation plate and a circuit board assembly, and prevent the wire reel assembly, the magnetic isolation plate and the circuit board assembly from rising too high.

[0005] In order to achieve the above-mentioned object, the utility model provides a cooking utensil, comprising:

[0006] A shell body, wherein the shell body is provided with an air inlet and an air outlet;

[0007] A wire reel assembly is arranged in the housing, the wire reel assembly comprises a bracket and a coil unit, the bracket has a first side and a second side which are opposite to each other in a first direction, the coil unit is arranged on the bracket, the coil unit comprises a plurality of turns of coil, each turn of the coil comprises a first wire segment and a second wire segment which have opposite currents and are connected to each other, the plurality of turns of coil are wound around the first side and the second side of the bracket, so that a plurality of the first wire segments are distributed on the first side of the bracket, and a plurality of the second wire segments are distributed on the second side of the bracket;

[0008] a magnetic isolation plate, located on the second side of the bracket and on the side of the second wire segment facing away from the bracket, and a via is provided on the magnetic isolation plate;

[0009] a circuit board assembly, disposed in the housing; and

[0010] A fan assembly is disposed in the housing, and is used to at least blow air toward the magnetic isolation plate and the circuit board assembly to dissipate heat from the wire drum assembly, the magnetic isolation plate and the circuit board assembly.

[0011] Optionally, the fan assembly is arranged on a side of the magnetic isolation plate facing away from the bracket;

[0012] The fan assembly has an air outlet end facing the magnetic isolation plate and an air outlet side facing the circuit board assembly.

[0013] Optionally, the fan assembly includes a fan and a first flow guiding structure, and the first flow guiding structure is used to guide the airflow of the fan to the magnetic isolation plate and the circuit board assembly.

[0014] Optionally, the first air guide structure includes an air guide cover, one end of the air guide cover is provided with an opening to form the air outlet end, and the side of the air guide cover is provided with a side air outlet to form the air outlet side; and / or,

[0015] The fan includes an axial flow fan or a blower.

[0016] Optionally, the other end of the air deflector is opened, and the air inlet is arranged on the shell at a position corresponding to the other end of the air deflector.

[0017] Optionally, the circuit board assembly includes a circuit board and a heat sink capable of performing heat exchange with the circuit board or an electrical component on the circuit board.

[0018] Optionally, the angle between the heat sink and the direction of the side air outlet is a, 0°≤a≤60°.

[0019] Optionally, a=5°.

[0020] Optionally, a second flow guiding structure is provided on the side of the magnetic isolation plate facing away from the bracket.

[0021] Optionally, the second flow guiding structure comprises a flow guiding plate arranged on a side of the magnetic isolation plate facing away from the bracket.

[0022] Optionally, the opening area of ​​the magnetic isolation plate is S, 10mm2≤S≤300mm2.

[0023] Optionally, the shell is provided with a third flow guide structure between the fan assembly and at least one of the magnetic isolation plate and the circuit board assembly.

[0024] Optionally, the third flow guiding structure includes flow guiding ribs.

[0025] Optionally, the magnetic field generated by the plurality of first wire segments is used to couple with the bottom of the heating container placed on the first side of the bracket, and is also used to couple with the side surrounding portion of the heating container to heat the side surrounding portion of the heating container.

[0026] In the technical solution of the utility model, the coil unit includes a multi-turn coil, each turn of the coil includes a first wire segment and a second wire segment with opposite currents and connected to each other, the multi-turn coil is wound on the first side and the second side of the bracket, so that a plurality of the first wire segments are distributed on the first side of the bracket, and a plurality of the second wire segments are distributed on the second side of the bracket, the magnetic isolation plate is located on the second side of the bracket and on the side of the second wire segment facing away from the bracket, a through hole is provided on the magnetic isolation plate, a circuit board assembly is arranged in the shell, and a fan assembly is also arranged in the shell, and a plurality of the first wire segments together constitute a working side wire group, and the working side wire group is used to correspond to the heating container to perform electromagnetic heating on the heating container. When working, the working The side wire group is arranged corresponding to the heating container, and when an alternating current is passed through each of the first wire segments, according to Ampere's law, the magnetic flux lines generated by each of the first wire segments extend toward the heating container, and the magnetic flux lines generated by each of the first wire segments extend from one side of the center of the bracket toward the heating container, and then extend to the outer edge away from the center of the bracket to form a closed magnetic field. In this way, the magnetic field formed by the working side wire group extends toward the outer edge of the bracket on the one hand to have a wider magnetic field area, and extends toward the heating container to have a higher magnetic field distribution area, so that when the heating container is heated, a wider area of ​​the bottom of the heating container can be heated, and it can extend to the side wall of the heating container to heat the side of the heating container. On this basis, when the multiple first wire segments are heating the cookware, the fan assembly sucks air into the shell through the air inlet to blow air toward the magnetic isolation plate and the circuit board assembly, and blows air to the wire reel assembly through the via hole, thereby accelerating the fluidity of the air around the magnetic isolation plate, the circuit board assembly and the wire reel assembly, and taking away their heat through the air outlet, so as to effectively dissipate the heat of the magnetic isolation plate, the circuit board assembly and the wire reel assembly, thereby extending the service life of the cooking utensil. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution in the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0028] Figure 1a-Figure 1c A schematic diagram of a cooking appliance of the prior art;

[0029] Figure 2 A cross-sectional perspective schematic diagram of an embodiment of the cooking utensil provided by the utility model;

[0030] Figure 3 A cross-sectional perspective schematic diagram of another embodiment of the cooking utensil provided by the utility model;

[0031] Figure 4 It is a three-dimensional exploded schematic diagram of Figure 1;

[0032] Figure 5 for Figure 2 Schematic diagram of a cutaway perspective view of the centerline reel assembly.

[0033] Description of Figure Numbers:

[0034] Label name Label name 100 Cooking utensils 32 The first flow guide structure 1 case 321 Air deflector 11 Air Inlet 4 Circuit Board Assembly 12 Air Inlet 41 Circuit Board 13 Vent 42 Heat sink 2 Magnetic isolation board 5 Cable drum assembly 21 The second flow guide structure 51 Bracket 211 Guide vane 52 Coil unit 22 Vias 52a First wire segment 3 Fan components 52b Second wire segment 31 Fan 200 Heating container 311 Axial fan 201 Heating container side 312 Blower

[0035] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0040] The cooking utensil is used to heat the heating container 200 such as a pot through an electromagnetic heating coil, see Figure 1a to Figure 1c , Figure 1a and Figure 1b The arrows are the directions of magnetic flux lines. Figure 1c The arrow in the figure represents an eddy current. The winding method of the wire reel 100' in the existing cooking utensils is single-sided winding. Due to the constraints of working parameters such as working current and frequency, the heating height of this wire reel after coupling with the pot is low, and only eddy currents can be generated at the bottom of the pot, and it is difficult to effectively heat the side wall of the pot. Therefore, how to improve the heating effect on the side wall of the pot becomes a technical problem that needs to be solved by technical personnel in this field.

[0041] In order to improve the heating effect of the wire reel on the side wall of the cookware, the inventor first thought of using a double-sided (first side and second side) winding method to wind the wire, so as to increase the heating height after coupling with the cookware, and thus effectively heat the side wall of the cookware. However, the winding on the first side of the double-sided winding wire reel has a strong magnetic field, which will heat the opposite area and objects near the side. Therefore, it is necessary to add a magnetic isolation plate on the second side of the double-sided winding wire reel. The magnetic isolation plate will also be heated, causing a high temperature rise, and will also radiate to the coil, causing a high temperature rise of the coil, which will have an adverse effect on the reliability of the cooking utensil and affect the life of the cooking utensil.

[0042] In order to solve the above problems, the utility model proposes a cooking utensil, which aims to effectively dissipate heat from a wire reel assembly, a magnetic isolation plate and a circuit board assembly to prevent the wire reel assembly, the magnetic isolation plate and the circuit board assembly from rising too high.

[0043] Figures 2 to 5 This is an embodiment of a cooking utensil 100 provided by the present invention.

[0044] Please refer to Figures 2 to 5The utility model provides a cooking appliance 100, comprising a housing 1, a wire reel assembly 5, a magnetic isolation plate 2, a circuit board assembly 4 and a fan assembly 3, wherein the housing 1 is provided with an air inlet 12 and an air outlet 13, the wire reel assembly 5 is arranged in the housing 1, the wire reel assembly 5 comprises a bracket 51 and a coil unit 52, the bracket 51 has a first side and a second side opposite to each other in a first direction, the coil unit 52 is arranged on the bracket 51, the coil unit 52 comprises a multi-turn coil, each turn of the coil comprises a first wire segment 52a and a second wire segment 52b having opposite currents and connected to each other, the multi-turn coil is wound around a first side of the bracket 51 (i.e., the upper side shown in the figure) ) and a second side (i.e., the lower side shown in the figure), so that a plurality of the first wire segments 52a are distributed on the first side of the bracket 51, and a plurality of the second wire segments 52b are distributed on the second side of the bracket 51, the magnetic isolation plate 2 is located on the second side of the bracket 51 and on the side of the second wire segment 52b facing away from the bracket 51, a through hole 22 is provided on the magnetic isolation plate 2, the circuit board assembly 4 is arranged in the shell 1, and the fan assembly 3 is arranged in the shell 1, and the fan assembly 3 is used to at least blow air to the magnetic isolation plate 2 and the circuit board assembly 4 to dissipate heat to the wire reel assembly 5, the magnetic isolation plate 2 and the circuit board assembly 4.

[0045] It should be pointed out that the "coil" in the "one-turn coil" mentioned in the present application is not just circular, it can be square or elliptical, and the "coil" refers to a wire segment that is bent to form a basically complete circle. For this reason, in a coil, the direction of the current is clockwise or counterclockwise, but when the "coil" is cut from the middle area, the current direction of one of the wire segments is from one end to the other end, while the current direction of the other wire segment is from the other end to one end, that is, the current directions are opposite. Therefore, each turn of the coil includes a first wire segment 52a and a second wire segment 52b that are connected to each other and have opposite currents.

[0046] In the technical solution of the present utility model, the coil unit 52 includes a multi-turn coil, each turn of the coil includes a first wire segment 52a and a second wire segment 52b with opposite currents and connected to each other, the multi-turn coil is wound on the first side and the second side of the bracket 51, so that the first side of the bracket 51 is distributed with a plurality of the first wire segments 52a, and the second side of the bracket 51 is distributed with a plurality of the second wire segments 52b, the magnetic isolation plate 2 is located on the second side of the bracket 51 and on the side of the second wire segment 52b facing away from the bracket 51, the magnetic isolation plate 2 is provided with a through hole 22, the circuit board assembly 4 is arranged in the shell 1, and the fan assembly 3 is also arranged in the shell 1, and the plurality of the first wire segments 52a together constitute a working side wire group, and the working side wire group is used to correspond to the heating container 200 to perform electromagnetic heating on the heating container 200. When working, the The working side wire group is arranged corresponding to the heating container 200, and each of the first wire segments 52a is passed with an alternating current. According to Ampere's law, the magnetic flux lines generated by each of the first wire segments 52a extend toward the heating container 200, and the magnetic flux lines generated by each of the first wire segments 52a extend from one side of the center of the bracket 51 toward the heating container 200, and then extend toward the outer edge away from the center of the bracket 51 to form a closed magnetic field. In this way, the magnetic field formed by the working side wire group extends toward the outer edge of the bracket 51 on the one hand to have a wider magnetic field area, and extends toward the heating container 200 to have a higher magnetic field distribution area, so that when the heating container 200 is heated, a wider area of ​​the bottom of the heating container 200 can be heated, and it can extend to the side wall of the heating container 200 to heat the side of the heating container 200. On this basis, when the multiple first wire segments 52a are heating the cookware, the fan assembly 3 sucks air into the shell 1 from the air inlet 12 to blow air toward the magnetic isolation plate 2 and the circuit board assembly 4, and blows air to the wire reel assembly 5 through the via 22, thereby accelerating the fluidity of the air around the magnetic isolation plate 2, the circuit board assembly 4 and the wire reel assembly 5, and taking away their heat through the air outlet 13, so as to effectively dissipate the heat of the magnetic isolation plate 2, the circuit board assembly 4 and the wire reel assembly 5, thereby extending the service life of the cooking utensil 100.

[0047] Since the cooking utensil 100 includes the wire reel assembly 5, the first direction is the up-down direction, the first side and the second side are respectively the two sides of the bracket 51 in the up-down direction, wherein the first side is opposite to the pot, and the second side is away from the pot, that is, the cooking utensil 100 heats the pot by the magnetic field generated by the multiple first wire segments 52a.

[0048] Among them, the opening area of ​​the magnetic isolation plate 2 is S, and S should not be too small, otherwise when the fan assembly 3 blows air to the magnetic isolation plate 2, only a small part of the wind is blown to the surrounding of the wire coil assembly 5 through the very small through hole 22, and can only take away a small part of the heat, or even fail to take away the heat around the wire coil assembly 5, which is not conducive to the heat dissipation of the wire coil assembly 5. At the same time, too small an opening area is not conducive to the lightweight of the cooking utensil 100; of course, S should not be too large, otherwise too large an opening area will reduce the mechanical strength of the magnetic isolation plate 2, and then make the magnetic isolation plate 2 easily deformed or even deformed under the action of external force. The breakage affects the magnetic isolation effect of the magnetic isolation plate 2, and the via hole 22 that is too large cannot effectively isolate the objects under or around the wire drum assembly 5 from the strong magnetic field under the wire drum assembly 5. A large number of magnetic flux lines of the multiple second wire segments 52b will heat the objects around them through the via hole 22 that is too large, which is not conducive to the magnetic isolation of the magnetic isolation plate 2. Therefore, 10mm2≤S≤300mm2, for example, S can be 10mm2, 50mm2, 200mm2, while ensuring that the magnetic isolation plate 2 has high mechanical strength and magnetic isolation effect, it can effectively dissipate the heat of the wire drum assembly 5.

[0049] When blowing air to the magnetic isolation plate 2, the fan assembly 3 is arranged on the side of the magnetic isolation plate 2 facing away from the bracket 51, and the fan assembly 3 has an air outlet end facing the magnetic isolation plate 2. In this way, not only can the magnetic isolation plate 2 be blown over a larger range, a large amount of wind can be blown to the magnetic isolation plate 2 and can be blown to the wire drum assembly 5 through the through hole 22, and the magnetic isolation plate 2 and the wire drum assembly 5 can be blown evenly, so that the magnetic isolation plate 2 and the wire drum assembly 5 can be effectively dissipated. Since the circuit board assembly 4 also needs to dissipate heat, an additional fan assembly 3 can be added to blow air to it, but this will increase the cost, so an air outlet side can be set for the fan assembly 3 to blow air to the circuit board assembly 4. In this way, the wire drum assembly 5, the magnetic isolation plate 2 and the circuit board assembly 4 can be blown at the same time by one fan assembly 3, which not only saves cost but also effectively dissipates heat to the wire drum assembly 5, the magnetic isolation plate 2 and the circuit board assembly 4.

[0050] It can be understood that the fan assembly 3 can generate wind, and the fan assembly 3 includes a fan 31. The fan 31 can blow out relatively concentrated wind and has a strong wind force. Even if the fan 31 and the magnetic isolation plate 2 are separated by a certain distance, most of the wind can be blown to the magnetic isolation plate 2. A part of the wind blown out by the fan 31 will still be dispersed around. At this time, by setting the first flow guide structure 32, the airflow of the fan 31 can be gathered and accurately flow in the direction close to the magnetic isolation plate 2 and close to the circuit board assembly 4, that is, the wind blown by the fan 31 to the magnetic isolation plate 2 and the circuit board assembly 4 is gathered and blown out from the air outlet end and the air outlet side, preventing the wind blown out by the fan 31 from being dispersed around, promoting the fan 31 to blow the magnetic isolation plate 2 and the circuit board assembly 4, which is beneficial to the heat dissipation of the wire drum assembly 5, the magnetic isolation plate 2 and the circuit board assembly 4.

[0051] Specifically, the first air guide structure 32 includes an air guide cover 321, one end of the air guide cover 321 is provided with an opening to form the air outlet end, and the side of the air guide cover 321 is provided with a side air outlet to form the air outlet side. Such a configuration can gather the airflow generated by the fan 31 and accurately guide the flow direction of the airflow. In the case of only one air guide cover 321, the airflow blown out by the fan 31 can be accurately guided and flowed in the direction close to the magnetic isolation plate 2 and the circuit board assembly 4, which can also save costs and is more convenient to install. The air guide cover 321 can be installed at the bottom of the shell 1 and cover the fan 31, that is, the fan 31 is inside the air guide cover 321. Of course, the installation method of the air guide cover 321 is not limited to this, and it can also be installed at the air outlet of the fan 31.

[0052] The fan 31 includes an axial flow fan 311 or a blower 312. Both the axial flow fan 311 and the blower 312 have strong airflow transport capabilities, and can quickly transport the formed airflow to the magnetic isolation plate 2 and the circuit board assembly 4 and dissipate heat efficiently. In addition, the axial flow fan 311 and the blower 312 have low noise during operation, and their size is also relatively small, which saves space and is easy to install.

[0053] Furthermore, the other end of the deflector 321 is opened, and the air inlet 11 is provided on the shell 1 at a position corresponding to the other end of the deflector 321. With such a configuration, the fan 31 can not only inhale air from the air inlet 12, but also inhale air from the air inlet 11, thereby accelerating the flow of more air to form more wind, thereby causing more wind to blow toward the magnetic isolation plate 2 and the circuit board assembly 4. In addition, the cooking utensil 100 can not only dissipate heat through the air inlet 12 and the air outlet 13, but also dissipate heat through the air inlet 11, thereby improving the heat dissipation effect of the cooking utensil 100.

[0054] It can be understood that in order to blow air to the cable drum assembly 5, the wind generated by the fan 31 must pass through the through hole 22 to reach the side of the cable drum assembly 5 close to the magnetic isolation plate 2, and the wind reaching the through hole 22 will flow around, and only a small part of the wind will pass through the through hole 22. Therefore, a second flow guide structure 21 is provided on the side of the magnetic isolation plate 2 facing away from the bracket 51 to gather the wind reaching the through hole 22 and guide it into the through hole 22.

[0055] Specifically, the second guide structure 21 includes a guide plate 211 arranged on the side of the magnetic isolation plate 2 facing away from the bracket 51. The guide plate 211 can extend along the direction of the through hole 22, and every two of the guide plates 211 can form an air supply channel that is connected to and compatible with the through hole 22. The air supply channel can not only gather the airflow reaching the vicinity of the through hole 22 and guide it into the through hole 22, but also allow the airflow to enter the through hole 22 in a larger range, that is, allow airflow to pass through every part of the through hole 22.

[0056] When the magnetic isolation plate 2 and the circuit board assembly 4 are both at a certain distance from the fan 31 or the distance is too large, the wind blown out by the fan assembly 3 will gradually disperse to the surroundings while blowing toward the magnetic isolation plate 2 and the circuit board assembly 4, and the wind force will also weaken. At this time, it is necessary to set a third flow guide structure between the shell 1 and at least one of the fan assembly 3 and the magnetic isolation plate 2 and the circuit board assembly 4. The third flow guide structure can gather the airflow flowing toward the magnetic isolation plate 2 and the circuit board assembly 4 to prevent it from dispersing to the surroundings during the flow, and enable the airflow to accurately reach the magnetic isolation plate 2 and the circuit board assembly 4.

[0057] Specifically, the third guide structure includes guide ribs, and a plurality of the guide ribs can be used to jointly enclose a first guide channel, one end of the first guide channel is connected to the shell 1 and corresponds to the magnetic isolation plate 2, the first guide channel extends along a first direction, and the other end thereof corresponds to the fan assembly 3, the other end of the first guide channel can be connected to the fan assembly 3, or can be spaced apart from the fan assembly 3, when they are spaced apart, the opening area of ​​the other end of the first guide channel can be larger than the opening area of ​​one end thereof, that is, the guide channel is arranged in a trumpet shape, so that the airflow dispersed to the surroundings generated by the fan assembly 3 can enter the first guide channel through the larger opening at the other end of the first guide channel and reach the magnetic isolation plate 2, of course, a plurality of the guide ribs can also be used to jointly enclose a second guide channel, so that the airflow dispersed to the surroundings generated by the fan assembly 3 can reach the circuit board assembly 4 through the second guide channel.

[0058] When the cooking appliance 100 has been working for a long time, various components inside it will generate heat to varying degrees. The circuit board assembly 4 includes a circuit board and a heat sink 42 capable of performing heat exchange with the circuit board 41 or electrical components on the circuit board 41. The circuit board 41 controls the cooking appliance 100 to heat the pot. The circuit board 41 generates heat during operation. Therefore, it is necessary to provide a heat sink 42 capable of performing heat exchange with the circuit board 41 or electrical components on the circuit board 41, so as to effectively dissipate the heat of the circuit board 41 or electrical components on the circuit board 41, and dissipate the heat of the circuit board 41 or electrical components on the circuit board 41 together with the wind from the fan assembly 3, thereby achieving effective heat dissipation of the cooking appliance 100.

[0059] Furthermore, the angle between the heat sink 42 and the direction of the side air outlet is a, and a can be the minimum 0°. At this time, the wind coming out of the side air outlet can blow to the heat sink 42, and a small part of the wind passes through the gap between each two adjacent heat sinks 42. a should not be too large, otherwise only a small part of the wind coming out of the side air outlet can blow to the circuit board assembly 4, or even no wind will blow to the circuit board assembly 4, which is not conducive to the heat dissipation of the circuit board 41 and the heat sink 42. Therefore, 0°≤a≤60°. For example, a can be 10°, 30°, or 60°, so that most of the wind from the side air outlet can blow to the circuit board assembly 4.

[0060] In order to maximize the heat dissipation of the circuit board assembly 4, it is necessary to guide the wind coming out of the side air outlet to the gap between each two adjacent heat sinks 42, so that the flow path of the wind from the side air outlet is parallel to the gap between each two adjacent heat sinks 42. When the wind enters the gap between each two adjacent heat sinks 42, most of the surface of the heat sink 42, the circuit board 41 and the electrical components on the circuit board 41 will be cooled, so that each component in the circuit board assembly 4 can be effectively cooled. When a is 5°, the above-mentioned heat dissipation effect can be achieved.

[0061] In the embodiment of the utility model, the magnetic field generated by the plurality of first wire segments 52a is used to couple with the bottom of the heating container 200 placed on the first side of the bracket 51, and is also used to couple with the side surrounding portion 201 of the heating container 200, so as to heat the side surrounding portion of the heating container 200. Under the existing packaging shell, under the premise of limited heating surface, because the coil unit 52 has a larger heating radiation range, the magnetic field generated by the coil unit 52 has a larger effective coupling area with the heating container 200, which can not only heat the bottom of the heating container 200, but also heat the side surrounding portion 201 of the heating container 200, so as to achieve three-dimensional heating, so that the heating effect of the heating container 200 is more uniform, and the heating efficiency can be improved, thereby reducing the user's use cost.

[0062] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A cooking utensil, characterized in that: include: A shell body, wherein the shell body is provided with an air inlet and an air outlet; A wire reel assembly is arranged in the housing, the wire reel assembly comprises a bracket and a coil unit, the bracket has a first side and a second side which are opposite to each other in a first direction, the coil unit is arranged on the bracket, the coil unit comprises a plurality of turns of coil, each turn of the coil comprises a first wire segment and a second wire segment which have opposite currents and are connected to each other, the plurality of turns of coil are wound around the first side and the second side of the bracket, so that a plurality of the first wire segments are distributed on the first side of the bracket, and a plurality of the second wire segments are distributed on the second side of the bracket; a magnetic isolation plate, located on the second side of the bracket and on the side of the second wire segment facing away from the bracket, and a via is provided on the magnetic isolation plate; a circuit board assembly, disposed in the housing; and A fan assembly is disposed in the housing, and is used to at least blow air toward the magnetic isolation plate and the circuit board assembly to dissipate heat from the wire drum assembly, the magnetic isolation plate and the circuit board assembly.

2. The cooking device according to claim 1, characterized in that: The fan assembly is arranged on a side of the magnetic isolation plate facing away from the bracket; The fan assembly has an air outlet end facing the magnetic isolation plate and an air outlet side facing the circuit board assembly.

3. The cooking device according to claim 2, characterized in that: The fan assembly includes a fan and a first flow guiding structure, wherein the first flow guiding structure is used to guide the airflow of the fan to the magnetic isolation plate and the circuit board assembly.

4. The cooking device according to claim 3, characterized in that: The first air guide structure comprises an air guide cover, one end of the air guide cover is provided with an opening to form the air outlet end, and the side of the air guide cover is provided with a side air outlet to form the air outlet side; and / or, The fan includes an axial flow fan or a blower.

5. The cooking device according to claim 4, characterized in that: The other end of the air deflector is opened, and an air inlet is arranged on the shell at a position corresponding to the other end of the air deflector.

6. The cooking device according to any one of claims 2 to 5, characterized in that: The circuit board assembly includes a circuit board and a heat sink capable of performing heat exchange with the circuit board or an electrical device on the circuit board.

7. The cooking device according to claim 4 or 5, characterized in that: The circuit board assembly includes a circuit board and a heat sink capable of performing heat exchange with the circuit board or an electrical component on the circuit board, and the angle between the heat sink and the direction of the side air outlet is a, 0°≤a≤60°.

8. The cooking device according to claim 7, characterized in that: a＝5°。 9. The cooking device according to any one of claims 1 to 5, characterized in that: A second flow guiding structure is arranged on the side of the magnetic isolation plate facing away from the bracket.

10. The cooking device according to claim 9, characterized in that: The second flow guiding structure comprises a flow guiding plate arranged on a side of the magnetic isolation plate facing away from the bracket.

11. The cooking device according to claim 1, characterized in that: The opening area of ​​the magnetic isolation plate is S, 10mm2≤S≤300mm2.

12. The cooking device according to claim 1, characterized in that: The shell is provided with a third flow guide structure between the fan assembly and at least one of the magnetic isolation plate and the circuit board assembly.

13. The cooking device according to claim 12, characterized in that: The third flow guiding structure includes a flow guiding rib.

14. The cooking device according to claim 1, characterized in that: The magnetic field generated by the plurality of first wire segments is used to couple with the bottom of the heating container placed on the first side of the bracket, and is also used to couple with the side surrounding portion of the heating container to heat the side surrounding portion of the heating container.

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