Cooking utensil

Abstract

The utility model discloses a cooking utensil, which relates to the technical field of cooking utensils and comprises an electric heating device, an electromagnetic heating device, an electric control device and at least one fan. The electric control device comprises a first control device, a second control device and at least one heat dissipation structure, each heat dissipation structure comprises a plurality of cooling fins, and the cooling fins are in heat conduction connection with the first control device and the second control device. The fan can blow air to the cooling fins so as to cool the first control device and the second control device. Heat of the first control device and the second control device is conducted to the cooling fins in a heat conduction mode; heat dissipation of the cooling fins can be accelerated, heat dissipation of the first control device and the second control device is achieved, and the problem that the service life of the control devices is shortened is solved on the whole.

Description

Technical Field

[0001] This utility model relates to the field of cooking utensils technology, and in particular to a cooking utensil. Background Technology

[0002] Common cooking appliances include two different heating systems. Correspondingly, corresponding control devices need to be set up to correspond to the heating systems in order to realize the independent heating control function. To realize the heating control function, control devices need to be set up for different heating systems to control the operation of the corresponding heating systems. Common control devices include electronic switching elements. The switching of control devices often involves high-power, high-current electricity, which generates a lot of heat. The control devices are prone to overheating, which reduces their lifespan. Utility Model Content

[0003] The main purpose of this invention is to provide a cooking appliance that addresses the problem of reduced lifespan of control devices.

[0004] To achieve the above objectives, the cooking utensil proposed in this utility model includes:

[0005] The main body includes a panel, and a heating area is provided on the upper side of the panel;

[0006] An electric heating device is disposed within the main body and is arranged corresponding to the heating area for heating a pot placed in the heating area. The electric heating device includes at least two heating parts arranged in independent sections, and the two heating parts include a first heating part and a second heating part.

[0007] An electromagnetic heating device is disposed within the main body. The electromagnetic heating device includes a first coil assembly, which is disposed below the electric heating device. The electromagnetic field of the first coil assembly can pass upward through the electric heating device to electromagnetically heat the cookware placed in the heating area. The first coil assembly is at least partially offset from at least one of the heating elements.

[0008] An electronic control device includes a circuit board, a first controller, a second controller, and at least one heat dissipation structure. Each heat dissipation structure includes multiple heat sinks. The first controller is disposed on the circuit board and electrically connected to the electromagnetic heating device. The second controller is disposed on the circuit board and electrically connected to the electric heating device. The first controller controls the operation of the electromagnetic heating device, and the second controller can control the first heating element and the second heating element to operate independently. The heat sinks are disposed on the circuit board and are thermally connected to the first controller and the second controller.

[0009] At least one fan is disposed within the main body and electrically connected to the electronic control device. The fan is capable of blowing air onto the heat sink to dissipate heat from the first control device and the second control device.

[0010] In one embodiment, the first control device and / or the second control device include a switching element; and / or,

[0011] The first control device and / or the second control device includes a rectifier bridge.

[0012] In one embodiment, the heat dissipation structure is configured as a plurality of structures, including a first heat dissipation structure and a second heat dissipation structure, wherein the first heat dissipation structure is thermally connected to the first control device, and the second heat dissipation structure is thermally connected to the second control device; or,

[0013] The heat dissipation structure includes a common heat dissipation structure, which is thermally connected to both the first controller and the second controller.

[0014] In one embodiment, the heat dissipation structure is configured as a plurality of heat dissipation structures, including a first heat dissipation structure and a second heat dissipation structure, wherein the first heat dissipation structure is thermally connected to the first control device, and the second heat dissipation structure is thermally connected to the second control device.

[0015] In the airflow direction of the fan, the first heat dissipation structure is positioned closer to the fan than the second heat dissipation structure.

[0016] In one embodiment, the electric heating device includes an infrared heating device, wherein the first heating part and the second heating part are infrared heating wires respectively.

[0017] In one embodiment, the first heating element and the second heating element are arranged in parallel.

[0018] In one embodiment, the electromagnetic heating device further includes a second coil assembly located around the first coil assembly.

[0019] In one embodiment, the second coil assembly is arranged in a ring shape and includes multiple turns of coil arranged in layers along the vertical direction; and / or,

[0020] The second coil assembly is disposed around the periphery of the electric heating device.

[0021] In one embodiment, the first controller is electrically connected to the first coil assembly and the second coil assembly, and is capable of independently controlling the operation of the first coil assembly and the second coil assembly.

[0022] In one embodiment, the first coil assembly and the second coil assembly are arranged in parallel so that they can be independently controlled by the electronic control device.

[0023] When cooking appliances employ hybrid heating to achieve sufficient heating power, i.e., the electric heating device and the electromagnetic heating device operate simultaneously, prolonged hybrid heating can cause the electromagnetic heating device to reach a high temperature due to the heat radiation or conduction from the electric heating device. This can affect the operation of the electric heating device and, in severe cases, lead to thermal runaway. Therefore, in the technical solution of this utility model, the first coil assembly and at least one of the heating elements are at least partially offset, and the second controller can control the first and second heating elements to operate independently. Thus, after the hybrid heating mode reaches a certain condition, the heating element offset from the first coil assembly can be controlled to operate, while the other part remains inactive. This reduces the impact of the heating element on the first coil assembly while avoiding the problem of a significant drop in heating power caused by completely shutting down the heating elements.

[0024] Furthermore, in this invention, by thermally connecting the first and second control devices to the heat sink, the heat of the first and second control devices can be transferred to the heat sink through thermal conduction. After the fan is started, the fan blows air onto the heat sink, which can accelerate the heat dissipation of the heat sink, thereby accelerating the heat dissipation of the first and second control devices and reducing the temperature of the first and second control devices during operation. Overall, this improves the problem of reduced service life of the control devices. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 An exploded perspective view of an embodiment of the cooking utensil provided by this utility model;

[0027] Figure 2 for Figure 1 A schematic diagram showing the spatial distribution of some structures of the electric heating device and electromagnetic heating device of the cooking appliance in the picture;

[0028] Figure 3 A schematic diagram of the structure of another embodiment of the cooking appliance after the top cover has been removed;

[0029] Figure 4 for Figure 1 A schematic diagram of the structure of an embodiment of the electronic control device for a Chinese cooking appliance;

[0030] Figure 5 for Figure 4 3D exploded view of the electronic control device in the diagram;

[0031] Figure 6 for Figure 4 A side view structural diagram of the electronic control device in the middle;

[0032] Figure 7 for Figure 4 A schematic diagram of the cross-sectional structure along line AA in the middle;

[0033] Figure 8 for Figure 1 A schematic diagram of another embodiment of the electronic control device for a Chinese cooking appliance;

[0034] Figure 9 for Figure 1 A schematic diagram of the structure of another embodiment of the electronic control device for a Chinese cooking appliance;

[0035] Figure 10 for Figure 1 A schematic diagram of another embodiment of the electronic control device for a Chinese cooking appliance.

[0036] Explanation of icon numbers:

[0037] 1. Main body; 11. Panel; 111. Heating area; 12. Base; 2. Electric heating device; 21. First heating part; 22. Second heating part; 3. Electromagnetic heating device; 31. First coil assembly; 32. Second coil assembly; 4. Electrical control device; 41. Circuit board; 42. First controller; 421. First component; 4211. First pin; 43. Second controller; 431. Second component; 4311. Second pin; 44. Heat dissipation structure; 441. First heat dissipation structure; 442. Second heat dissipation structure; 443. First receiving groove; 444. First protrusion; 445. Second receiving groove; 446. Third receiving groove; 447. Second protrusion; 5. Fan; 6. Switch; 7. Rectifier bridge.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0040] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] Common cooking appliances include two different heating systems. Correspondingly, corresponding control devices need to be set up to correspond to the heating systems in order to realize the independent heating control function. To realize the heating control function, control devices need to be set up for different heating systems to control the operation of the corresponding heating systems. Common control devices include electronic switching elements. The switching of control devices often involves high-power, high-current, which makes the heat generated by the control devices also high, resulting in the temperature of the control devices rising. When the temperature of the control devices is high, it is easy to reduce the lifespan of the control devices.

[0043] This utility model proposes a cooking utensil.

[0044] Please see Figure 1 , Figure 2 and Figure 3In one embodiment of this utility model, the cooking appliance includes a main body 1, an electric heating device 2, an electromagnetic heating device 3, an electronic control device 4, and at least one fan 5. The main body 1 includes a panel 11, and a heating area 111 is provided on the upper side of the panel 11. The electric heating device 2 is disposed inside the main body 1 and is disposed corresponding to the heating area 111 for heating the pot placed in the heating area 111. The electric heating device 2 includes at least two heating parts that are independently partitioned, including a first heating part 21 and a second heating part 22. The electromagnetic heating device 3 is disposed inside the main body 1 and includes a first coil assembly 31. The first coil assembly 31 is disposed below the electric heating device 2, and the electromagnetic field of the first coil assembly 31 can pass upward through the electric heating device 2 to electromagnetically heat the pot placed in the heating area 111. The first coil assembly 31 is at least partially offset from the at least one heating part.

[0045] Please see Figure 2 , Figure 4 and Figure 5 The electronic control device 4 includes a circuit board 41, a first controller 42, a second controller 43, and at least one heat dissipation structure 44. Each heat dissipation structure 44 includes multiple heat sinks. The first controller 42 is mounted on the circuit board 41 and electrically connected to the electromagnetic heating device 3. The second controller 43 is mounted on the circuit board 41 and electrically connected to the electric heating device 2. The first controller 42 controls the operation of the electromagnetic heating device 3, and the second controller 43 can control the first heating element 21 and the second heating element 22 to operate independently. The heat sinks are mounted on the circuit board 41 and are thermally connected to the first controller 42 and the second controller 43. At least one fan 5 is located inside the main body 1 and electrically connected to the electronic control device 4. The fan 5 can blow air onto the heat sinks to dissipate heat from the first controller 42 and the second controller 43.

[0046] Please see Figure 1 , Figure 2 and Figure 3In the technical solution of this utility model, when the cooking appliance adopts hybrid heating to obtain a sufficiently large heating power, that is, the electric heating device 2 and the electromagnetic heating device 3 work simultaneously, when the hybrid heating works for a long time, the electromagnetic heating device 3 will have a relatively high temperature due to the heat radiation or heat conduction of the electric heating device 2, which will affect the operation of the electric heating device 2. In severe cases, there may be problems such as thermal runaway. Therefore, in the technical solution of this utility model, the first coil assembly 31 and at least one of the heating parts are at least partially staggered, and the second control device 43 can control the first heating part 21 and the second heating part 22 to work independently. Therefore, after the hybrid heating mode has reached a certain condition, the heating part that is staggered from the first coil assembly 31 can be controlled to work, while the other part does not work. This can reduce the impact of the heating part on the first coil assembly 31, while avoiding the problem of a significant drop in heating power caused by completely shutting down the heating parts.

[0047] Furthermore, in this invention, the first control device 42 and the second control device 43 are thermally connected to the heat sink, which allows the heat from the first control device 42 and the second control device 43 to be transferred to the heat sink through thermal conduction. After the fan 5 is started, the fan 5 blows air onto the heat sink, which accelerates the heat dissipation of the heat sink, thereby accelerating the heat dissipation of the first control device 42 and the second control device 43, reducing the temperature of the first control device 42 and the second control device 43 during operation, and improving the overall problem of reduced service life of the control devices.

[0048] In one embodiment of this utility model, please refer to Figure 2 , Figure 4 and Figure 5 The first control device 42 includes a switch 6. The operation of the first coil assembly 31 can be controlled by the first control device 42, thereby controlling the heating of the first coil assembly 31.

[0049] The first control device 42 includes a rectifier bridge 7, which rectifies the current of the first coil assembly 31.

[0050] The second control device 43 includes a switch 6. The operation of the electric heating device 2 can be controlled by the second control device 43 to achieve control of the heating of the electric heating device 2.

[0051] The second control device 43 includes a rectifier bridge 7, which rectifies the current of the electric heating device 2.

[0052] Please see Figure 5 , Figure 6 , Figure 7 and Figure 8In one embodiment of the present invention, the heat dissipation structure 44 is configured as a plurality of heat dissipation structures 44, including a first heat dissipation structure 441 and a second heat dissipation structure 442.

[0053] Please see Figure 9 and Figure 10 In one embodiment of this utility model, the heat dissipation structure 44 includes a common heat dissipation structure 44, which is thermally connected to both the first control device 42 and the second control device 43. The common heat dissipation structure 44 is a heat sink. When one or more of the first control device 42 and the second control device 43 generate heat, the heat can be transferred to the common heat dissipation structure 44. Thus, the common heat dissipation structure 44 can simultaneously dissipate heat from both the first control device 42 and the second control device 43.

[0054] In one embodiment of this utility model, the electric heating device 2 includes an infrared heating device, with the first heating element 21 and the second heating element 22 corresponding to infrared heating wires. When the cooking appliance needs to be electrically heated, the second controller 43 controls the infrared device to work, and the first heating element 21 and the second heating element 22 emit heat to heat the heating area 111 of the panel 11.

[0055] It should be noted that this utility model does not limit the specific material of the infrared heating wire. The infrared heating wire can be made of iron-chromium-aluminum alloy, nickel-chromium alloy, chromium-aluminum-molybdenum alloy, chromium-aluminum-niobium alloy, carbon fiber, or other materials. Of course, the infrared heating wire can also be made of multiple materials selected from iron-chromium-aluminum alloy, nickel-chromium alloy, chromium-aluminum-molybdenum alloy, chromium-aluminum-niobium alloy, and carbon fiber. In actual installation, the material can be selected according to the requirements.

[0056] The first heating element 21 and the second heating element 22 are arranged in parallel. This allows the second controller 43 to control the first heating element 21 and the second heating element 22 to work independently, thereby ensuring the normal operation of the mixed heating function of the cooking appliance. Furthermore, the first heating element 21 and the second heating element 22 can be connected in series. The second control device 43 includes two switches, which are connected in series with the first heating element 21 and the second heating element 22 respectively. When one of the first heating element 21 and the second heating element 22 needs to be in the working state, the connected switches can be disconnected to switch to the working state. When both the first heating element 21 and the second heating element 22 need to be in the working state, both switches can be switched to the disconnecting state. When one of the first heating element 21 and the second heating element 22 needs to be stopped, the corresponding switch can be closed. In order to simultaneously close the first heating element 21 and the second heating element 22, the second control device 43 also includes a master switch. By connecting the master switch in series with the first heating element 21 and the second heating element 22, the first heating element 21 and the second heating element 22 can be switched to the stop state by controlling the disconnection of the master switch.

[0057] Furthermore, there are many other ways for the second controller 43 to control the independent operation of the first heating element 21 and the second heating element 22. For example, for more precise control, a thyristor or a solid-state relay can be used to control the power input of each of the first heating element 21 and the second heating element 22 separately. The thyristor or solid-state relay can quickly switch the current according to the control signal to achieve independent and precise control of the first heating element 21 and the second heating element 22. The second controller 43 can also be a MOSFET, a bipolar transistor, an IGBT (insulated gate bipolar transistor), or a thyristor.

[0058] In one embodiment of this utility model, please refer to Figure 1 and Figure 3 The electromagnetic heating device 3 also includes a second coil assembly 32 located around the first coil assembly 31. The first coil assembly 31 is typically coiled, therefore, it has an inner and outer periphery; the outer periphery of the first coil assembly 31 generally refers to its outer radial direction. In this technical solution, the electromagnetic heating device 3 is configured to consist of the first coil assembly 31 and the second coil assembly 32 distributed inside and outside, enabling the simultaneous generation of magnetic fields in different areas, thereby achieving a more uniform heating effect.

[0059] In one embodiment of this utility model, please refer to Figure 3The second coil assembly 32 is arranged in a ring shape and includes multiple turns of coil arranged in layers along the vertical direction. In the prior art, some electromagnetic heating coils are usually coiled in a plane. In this technical solution, "the second coil assembly 32 includes multiple turns of coil arranged in layers along the vertical direction" means that the second coil assembly 32 is stacked and coiled in the vertical direction, thus presenting a spatial tubular or sleeve-like structure. This arrangement, while ensuring the electromagnetic heating efficiency of the electromagnetic heating device 3, can reduce the radial space occupied by the second coil assembly 32, which is beneficial for controlling the lateral size of the cooking appliance. In addition, by placing the second coil 32 close to the pot on the heating area, the magnetic field formed by the second coil 32 in the peripheral area of ​​the heating area is enhanced, which makes it easier to heat the side wall of the pot.

[0060] In one embodiment of this invention, the second coil assembly 32 is disposed on the periphery of the electric heating device 2. By disposing the second coil assembly 32 on the periphery of the electric heating device 2, that is, in the vertical projection, the second coil assembly 32 does not overlap with the first heating element 21 or the second heating element 22. This arrangement allows less heat generated by the first heating element 21 and the second heating element 22 to be transferred downwards to the second coil assembly 32. When the mixed heating operation is prolonged, the electromagnetic heating device may experience high temperatures due to the thermal radiation or conduction of the electric heating device, thus affecting its operation. After the mixed heating mode reaches a certain condition, some heating elements can be controlled to operate while others are deactivated. This reduces the impact of the heating elements on the second coil assembly while avoiding a significant drop in heating power caused by completely shutting down the heating elements.

[0061] The first controller 42 is electrically connected to the first coil assembly 31 and the second coil assembly 32, and can independently control the operation of the first coil assembly 31 and the second coil assembly 32. By independently controlling the operation of the first coil assembly 31 and the second coil assembly 32, the distribution of the magnetic field on the heating area 111 can be controlled, so that the magnetic field is concentrated in the area to be heated 111. By controlling the operation of the first coil assembly 31, the central area of ​​the cookware can be heated, and by controlling the operation of the second coil assembly 32, the edge area of ​​the cookware can be heated.

[0062] In one embodiment of this invention, the first coil assembly 31 and the second coil assembly 32 are connected in parallel so that they can be independently controlled by the electronic control device 4. There are many ways for the electronic control device 4 to independently control the operation of the first coil assembly 31 and the second coil assembly 32. For example, a thyristor or a solid-state relay can be used to control the power input of each first coil assembly 31 and the second coil assembly 32 separately. The thyristor or solid-state relay can quickly switch the current according to the control signal, achieving independent and precise control of the first coil assembly 31 and the second coil assembly 32. In this technical solution, the first coil assembly 31 and the second coil assembly 32 are connected in parallel, which is easier to implement and provides better independent control.

[0063] In this embodiment, the main body 1 also includes a base 12, which has an opening on its upper side. The bottom plate cover is fixed to the upper opening on the base 12. Through the cooperation between the base 12 and the panel 11, an installation area can be formed within the base 12. The installation area is used for installing the power supply heating device 2, the electromagnetic heating device 3, the electronic control device 4, and at least one fan 5.

[0064] In this embodiment, the first control device 42 includes a rectifier bridge 7 and a switch 6. The switch 6 can control the operation of the first coil assembly 31 and the second coil assembly 32 respectively. At the same time, the rectifier bridge 7 can rectify the current of the first coil assembly 31 and the second coil assembly 32.

[0065] The second control device 43 is electrically connected to the first coil assembly 31 and the second coil assembly 32. The second control device 43 can be selected from MOSFETs, bipolar transistors, IGBTs (insulated gate bipolar transistors), or silicon controlled rectifiers, etc.

[0066] Reference Figure 5 In this embodiment, the second control device 43 includes two switches 6 connected in parallel, and the two switches 6 are respectively connected to the first heating element 21 and the second heating element 22. The operation of the first heating element 21 and the second heating element 22 can be controlled by the two switches 6 respectively.

[0067] Please see Figure 6 and Figure 7The first control device 42 includes a first component 421 and a first pin 4211. The first component 421 is electrically connected to the first pin 4211, and the first component 421 is thermally connected to a corresponding heat sink. The first component 421 is plate-shaped and has a first connecting surface and a first heat dissipation surface. In most cases, the edges of the first connecting surface and the first heat dissipation surface are perpendicularly connected. One end of the first pin 4211 is connected to the first connecting surface. The first component 421 is arranged parallel to the circuit board 41. Specifically, the first heat dissipation surface is parallel to the upper side of the circuit board 41, and the first heat dissipation surface is the upper side of the first component 421. The first heat dissipation structure 441 is located on the upper side of the first heat dissipation surface and is thermally connected to the first heat dissipation surface. The first heat dissipation structure 441 is a heat sink.

[0068] The first pin 4211 is perpendicular to the first connecting surface and is flat against the lower side of the circuit board 41, which reduces the height of the first heat dissipation surface. This allows for a larger size of the first heat dissipation structure 441 in the vertical direction without increasing the size of the cooking device in the vertical direction, thereby improving the heat dissipation efficiency of the first component 421.

[0069] The first component 421 is projected onto the outside of the circuit board 41 in the vertical direction, which can prevent the first component 421 from being in contact with the circuit board 41. This makes it easier to move the first component 421 down when installing it, so that the height of the lower side of the first component 421 is lower than the height of the upper side of the circuit board 41.

[0070] The second control device 43 includes a second component 431 and a second pin 4311. The second component 431 and the second pin 4311 are electrically connected. The second component 431 can be configured the same as the first component 421, and the second pin 4311 can be configured the same as the first pin 4211.

[0071] The second component 431 includes a second heat dissipation surface and a second connection surface. In most cases, one end of the second pin 4311 is vertically connected to the second connection surface, and the second heat dissipation surface is perpendicular to the second connection surface and connected at the edge.

[0072] Please see Figure 5 and Figure 8In one embodiment of this utility model, the first heat dissipation structure 441 is thermally connected to the first control device 42, and the second heat dissipation structure 442 is thermally connected to the second control device 43. The first heat dissipation structure 441 can independently dissipate heat from the first control device 42, and the second heat dissipation structure 442 can independently dissipate heat from the second control device 43. This facilitates the selection of appropriate models of the first heat dissipation structure 441 and the second heat dissipation structure 442 based on the heat dissipation of the first control device 42 and the second control device 43, thereby controlling the temperature of the first control device 42 and the second control device 43 during operation.

[0073] Specifically, there are two second control devices 43, both of which are switches 6. The two second control devices 43 are electrically connected to the first heating element 21 and the second heating element 22 respectively. When either the first heating element 21 or the second heating element 22 is running, it can dissipate heat to the corresponding second control device 43 independently, thereby reducing the amount of heat transferred from one second control device 43 to the other.

[0074] In one embodiment of this utility model, please refer to Figure 2 In the airflow direction of the fan 5, the first heat dissipation structure 441 is positioned closer to the fan 5 than the second heat dissipation structure 442. The first heat dissipation structure 441 and the second heat dissipation structure 442 enable the first control device 42 to have a higher heat dissipation efficiency than the second control device 43, thus accelerating the heat dissipation of the first control device 42 when its thermal power is high.

[0075] In one embodiment of this utility model, please refer to Figure 5 The first control device 42 is thermally connected to the first heat dissipation structure 441, and the second control device 43 is thermally connected to the second heat dissipation structure 442. Both the first heat dissipation structure 441 and the second heat dissipation structure 442 are individual heat sinks, and they are separately arranged. Specifically, there are two first components 421, both of which are thermally connected to the same heat sink. Both first heat dissipation surfaces are parallel to the circuit board 41, and both first components 421 are located on the outside of the circuit board 41, meaning that the vertical projections of both first components 421 are located on the outside of the circuit board 41. The two first components 421 are a switching element and a rectifier bridge, respectively, and the first pin 4211 is flat against the bottom side of the circuit board 41, so that the lower side of the first component 421 is lower than the upper side of the circuit board 41. A first receiving groove 443 is formed on the bottom side of the first heat dissipation structure 441, and the upper side of the first component 421 is located within the first receiving groove 443.

[0076] Two second components 431 are provided, both of which are switching elements. Both second components 431 are thermally connected to the same second heat dissipation structure 442, and are arranged parallel to the upper side of the circuit board 41. Specifically, the second heat dissipation surface is located on the upper side of the second components 431, and the second heat dissipation structure 442 is thermally connected to the second heat dissipation surface. The lower side of the second components 431 abuts against the upper side of the circuit board 41, and the upper sides of both second components 431 are thermally connected to the second heat dissipation structure 442. The second pin 4311 is bent and inserted into the circuit board 41, and is soldered to the circuit board 41. A first protrusion 444 is formed on the bottom side of the second heat dissipation structure 442, and the first protrusion 444 abuts against the upper side of the circuit board 41.

[0077] In another embodiment of this utility model, please refer to Figure 8 The first control device 42 is thermally connected to the first heat dissipation structure 441, and the second control device 43 is thermally connected to the second heat dissipation structure 442. Both the first heat dissipation structure 441 and the second heat dissipation structure 442 are individual heat sinks, and they are separately arranged. Specifically, there are two first components 421, both of which are thermally connected to the same heat sink. Both first heat dissipation surfaces are parallel to the circuit board 41, and both first components 421 are located on the outside of the circuit board 41, meaning that the vertical projections of both first components 421 are located on the outside of the circuit board 41. The two first components 421 are a switching element and a rectifier bridge, respectively, and the first pin 4211 is flat against the bottom side of the circuit board 41, so that the lower side of the first component 421 is lower than the upper side of the circuit board 41. A first receiving groove 443 is formed on the bottom side of the first heat dissipation structure 441, and the upper side of the first component 421 is located within the first receiving groove 443.

[0078] Two second components 431 are provided, both of which are switching elements. Both second components 431 are thermally connected to the same second heat dissipation structure 442. Both second components 431 are located on the upper side of the circuit board 41, with the second heat dissipation surface perpendicular to the circuit board 41. The second connection surface is located on the lower side of the second components 431, and the second heat dissipation surface is thermally connected to the second heat dissipation structure 442. The second pin 4311 is vertically arranged and plugged into and fixed to the circuit board 41, and is soldered to the circuit board 41. A second receiving groove 445 is formed on the side of the first heat dissipation structure 441, and part of the second component 431 is located within the second receiving groove 445.

[0079] Please see Figure 9In another embodiment of this utility model, the first control device 42 and the second control device 43 are thermally connected to the same common heat dissipation structure 44. The first control device 42 includes two first components 421, each including a switch 6 and a rectifier bridge 7. The first heat dissipation surface is parallel to the circuit board 41, and the orthographic projection of the two first components 421 in the vertical direction is located outside the circuit board 41. The first pin 4211 is flat against the upper or lower side of the circuit board 41, such that the lower side of the first component 421 is lower than the upper side of the circuit board 41. Specifically, the first pin 4211 is flat against the lower side of the circuit board 41. A third receiving groove 446 is formed on the bottom side of the common heat dissipation structure 44, and the upper side of the first component 421 is located in the third receiving groove 446.

[0080] The second control device 43 includes two second components 431, both of which are switches 6. The second heat sink is parallel to the circuit board 41, and the second control device 43 is located on the upper side of the circuit board 41. The second pin 4311 is bent and inserted into the circuit board 41, and the lower side of the second component 431 is thermally connected to the second heat sink.

[0081] Please see Figure 10 In another embodiment of this utility model, the first control device 42 and the second control device 43 are thermally connected to the same common heat dissipation structure 44. The first control device 42 includes two first components 421, each including a switch 6 and a rectifier bridge 7. The first heat dissipation surface is parallel to the circuit board 41. The end of the first pin 4211 away from the first connection surface is bent, so that the end of the first pin 4211 away from the first connection surface is perpendicular to the circuit board 41. The end of the first pin 4211 away from the first connection surface is inserted into the upper side of the circuit board 41, which can improve the stability of the first component 421 on the circuit board 41.

[0082] The second control device 43 includes two second components 431, both of which are switches 6. The second components 431 are arranged parallel to the circuit board 41, and their second pins 4311 are bent and inserted into the circuit board 41. The lower side of the second component 431 is thermally connected to the second heat dissipation surface. The common heat dissipation structure 44 has a protruding second protrusion 447, which abuts against the circuit board 41, and the lower side of the second component 431 abuts against the upper side of the second protrusion 447.

[0083] A thermally conductive medium is filled between the first component 421, the second component 431, and the heat sink. Specifically, the thermally conductive medium can be thermally conductive silicone grease.

[0084] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cooking utensil, characterized in that, include: The main body includes a panel, and a heating area is provided on the upper side of the panel; An electric heating device is disposed within the main body and is arranged corresponding to the heating area for heating a pot placed in the heating area. The electric heating device includes at least two heating parts arranged in independent sections, and the two heating parts include a first heating part and a second heating part. An electromagnetic heating device is disposed within the main body. The electromagnetic heating device includes a first coil assembly, which is disposed below the electric heating device. The electromagnetic field of the first coil assembly can pass upward through the electric heating device to electromagnetically heat the cookware placed in the heating area. The first coil assembly is at least partially offset from at least one of the heating elements. An electronic control device includes a circuit board, a first controller, a second controller, and at least one heat dissipation structure. Each heat dissipation structure includes multiple heat sinks. The first controller is disposed on the circuit board and electrically connected to the electromagnetic heating device. The second controller is disposed on the circuit board and electrically connected to the electric heating device. The first controller is used to control the operation of the electromagnetic heating device, and the second controller can control the first heating element and the second heating element to operate independently. The heat sinks are disposed on the circuit board and are thermally connected to the first controller and the second controller. as well as, At least one fan is disposed within the main body and electrically connected to the electronic control device. The fan is capable of blowing air onto the heat sink to dissipate heat from the first control device and the second control device.

2. The cooking appliance as described in claim 1, characterized in that, The first control device and / or the second control device include switching elements; and / or, The first control device and / or the second control device includes a rectifier bridge.

3. The cooking utensil as described in claim 1, characterized in that, The heat dissipation structure is configured as multiple structures, including a first heat dissipation structure and a second heat dissipation structure. The first heat dissipation structure is thermally connected to the first control device, and the second heat dissipation structure is thermally connected to the second control device. or, The heat dissipation structure includes a common heat dissipation structure, which is thermally connected to both the first controller and the second controller.

4. The cooking appliance as described in claim 1, characterized in that, The heat dissipation structure is configured as multiple structures, including a first heat dissipation structure and a second heat dissipation structure. The first heat dissipation structure is thermally connected to the first control device, and the second heat dissipation structure is thermally connected to the second control device. In the airflow direction of the fan, the first heat dissipation structure is positioned closer to the fan than the second heat dissipation structure.

5. The cooking appliance as described in claim 1, characterized in that, The electric heating device includes an infrared heating device, wherein the first heating part and the second heating part are infrared heating wires respectively.

6. The cooking appliance as described in claim 1, characterized in that, The first heating element and the second heating element are arranged in parallel.

7. The cooking appliance as described in claim 1, characterized in that, The electromagnetic heating device also includes a second coil assembly located around the first coil assembly.

8. The cooking appliance as described in claim 7, characterized in that, The second coil assembly is arranged in a ring shape and includes multiple turns of coil arranged in layers along the vertical direction; and / or, The second coil assembly is disposed around the periphery of the electric heating device.

9. The cooking appliance as described in claim 7, characterized in that, The first controller is electrically connected to the first coil assembly and the second coil assembly, and is capable of independently controlling the operation of the first coil assembly and the second coil assembly.

10. The cooking appliance as described in claim 7, characterized in that, The first coil assembly and the second coil assembly are arranged in parallel so that they can be independently controlled by the electronic control device.

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