Heating device and cooking utensil

Abstract

The embodiment of the utility model provides a heating device and a cooking utensil, the heating device comprises a heating assembly and a temperature control assembly, the heating assembly is provided with a hollow area, at least part of the upper surface of the heating assembly defines a supporting surface, and the supporting surface is used for placing a container to be heated; a part of the temperature control assembly penetrates through the hollow area, the top of the temperature control assembly is provided with a heat transfer surface, and the heat transfer surface faces the to-be-heated container and is used for obtaining the temperature of the to-be-heated container; wherein in the height direction of the heating device, the supporting surface is higher than the heat transfer surface. An air gap is formed between the heat transfer surface and the bottom surface of the to-be-heated container, air in the air gap can transfer the temperature of the bottom surface of the to-be-heated container to the heat transfer surface, and the heat transfer surface can obtain the temperature of the to-be-heated container, so that the temperature of the heating assembly is conveniently controlled according to the temperature; in addition, the temperature control assembly can be prevented from interfering with the to-be-heated container placed on the supporting face, and the to-be-heated container can be conveniently and stably placed on the supporting face.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to a heating device and a cooking utensil. Background Art

[0002] For example, in related art, electric stoves place the container to be cooked on a heating device, which then heats the container to achieve cooking. However, the heating device continues to heat the container during cooking, which can easily lead to excessive temperatures inside the container, causing fires and compromising the safety of the cooking appliance. Utility Model Content

[0003] In view of this, embodiments of the present application hope to provide a heating device and a cooking utensil to improve the safety of the cooking utensil.

[0004] To achieve the above objectives, the technical solution of the embodiment of the present application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a heating device, comprising:

[0006] A heating assembly having a hollow area, wherein at least a portion of an upper surface of the heating assembly defines a support surface for placing a container to be heated;

[0007] a temperature control component, a portion of which is disposed in the hollow region, and a heat transfer surface is provided on the top of the temperature control component, the heat transfer surface facing the container to be heated, for obtaining the temperature of the container to be heated;

[0008] Wherein, in the height direction of the heating device, the supporting surface is higher than the heat transfer surface.

[0009] In some embodiments, in the height direction of the heating device, the distance between the support surface and the heat transfer surface does not exceed 10 mm.

[0010] In some embodiments, in the height direction of the heating device, the distance between the support surface and the heat transfer surface is 3 mm to 5 mm.

[0011] In some embodiments, the outer contour of the temperature control component is spaced apart from the heating component.

[0012] In some embodiments, the temperature control assembly includes:

[0013] a housing having a receiving space;

[0014] A thermostat, at least a portion of which is accommodated in the accommodation space, the thermostat and the heating component are connected in series in a circuit, and the thermostat is used to disconnect or connect the circuit.

[0015] In some embodiments, the thermostat is directly or indirectly secured to the housing.

[0016] In some embodiments, the entirety of the thermostat is housed in the accommodation space, and the top surface of the housing defines the heat transfer surface.

[0017] In some embodiments, the temperature control assembly includes a temperature control bracket, the temperature controller is disposed on the temperature control bracket, and the temperature control bracket is connected to the top wall.

[0018] In some embodiments, the housing has a top wall, and the top end of the thermostat passes through the top wall.

[0019] In some embodiments, the housing includes a cylinder and a cover, wherein the cover is disposed on the top of the cylinder and encloses the accommodation space;

[0020] The side wall of the cylinder has at least one through hole; the edge of the cover is folded toward the bottom to form a skirt, the skirt surrounds the outer circumference of the cylinder, and forms a spacing space with the outer circumferential surface of the cylinder, and the at least one through hole is connected to the spacing space to form a heat dissipation channel, wherein, in the circumference of the cylinder, the skirt blocks the at least one through hole.

[0021] In some embodiments, the heating device includes a plurality of fixed supports, which are connected to the outer shell and arranged at intervals along the circumference of the outer shell. The heating component has a spiral structure that extends spirally around the hollow area, and the heating component is supported on the fixed supports.

[0022] In some embodiments, the heating device includes a protective sleeve surrounding the periphery of the housing;

[0023] Wherein, in the height direction of the heating device, the top end of the protective tube is not higher than the supporting surface.

[0024] In some embodiments, the protective tube is connected to the fixing bracket and is spaced apart from the housing.

[0025] In some embodiments, the side wall of the protective tube has a plurality of open slots, the open slots penetrate the bottom end surface of the protective tube along the height direction, and one end of the fixing bracket passes through the open slots.

[0026] In a second aspect, an embodiment of the present application further provides a cooking utensil comprising the heating device described in any of the above embodiments.

[0027] The heating device and cooking utensil provided in the embodiments of the present application have an air gap between the heat transfer surface and the bottom surface of the container to be heated. The air in the air gap can transfer the temperature of the bottom surface of the container to be heated to the heat transfer surface, which can then obtain the temperature of the container to be heated, facilitating temperature control of the heating component based on the temperature. Because the heat transfer surface does not contact the container to be heated, interference with the container placed on the support surface can be avoided, facilitating stable placement of the container on the support surface. Furthermore, there is no need for a floating design for the temperature control component in the height direction, which facilitates a simple structure of the heating device and facilitates manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a cooking utensil provided in an embodiment of the present application;

[0029] Figure 2 An exploded schematic diagram of a heating device provided in one embodiment of the present application;

[0030] Figure 3 for Figure 2 Exploded diagram of the temperature control component in FIG;

[0031] Figure 4 A cross-sectional schematic diagram of a heating device provided in one embodiment of the present application;

[0032] Figure 5 for Figure 4 A magnified schematic diagram of point A in the middle;

[0033] Figure 6 A cross-sectional schematic diagram of a heating device provided in one embodiment of the present application;

[0034] Figure 7 for Figure 6 A magnified schematic diagram of point B in the middle;

[0035] Figure 8 An exploded schematic diagram of a heating device provided in one embodiment of the present application;

[0036] Figure 9 for Figure 8 Exploded diagram of the temperature control component in FIG;

[0037] Figure 10 A cross-sectional schematic diagram of a heating device provided in one embodiment of the present application;

[0038] Figure 11 A cross-sectional schematic diagram of a heating device provided in one embodiment of the present application;

[0039] Figure 12 for Figure 11 Enlarged schematic diagram of point C in the middle.

[0040] Description of Reference Numerals

[0041] 1. Cooking utensil; 10. Heating device; 11. Heating component; 11a. Hollow area; 11b. Support surface; 12. Temperature control component; 12a. Heat transfer surface; 121. Housing; 121a. Accommodation space; 121b. Spacing space; 121c. Heat dissipation structure; 121d. Protrusion; 1211. Cover; 1211a. Skirt; 1212. Cylinder; 1212a. Through hole; 122. Thermostat; 123. Temperature control bracket; 123a. Bracket hole; 13. Fixing bracket; 13a. Limiting structure; 13b. Branch structure; 14. Protective tube; 14a. Opening groove; 20. Container to be heated. DETAILED DESCRIPTION

[0042] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] In the description of the embodiments of the present application, it should be noted that the terms "upper," "lower," "front," "back," "top," "bottom," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the embodiments of the present application and to simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0045] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the description of this specification, the description with reference to the terms "some embodiments", "examples", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, 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 any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0047] The present application embodiment provides a cooking utensil 1, please refer to Figure 1 , including the heating device 10 of any embodiment of the present application.

[0048] It should be noted that the specific type of the cooking utensil 1 is not limited here. For example, in some embodiments, the cooking utensil 1 can be one of an electric stove, an electric wok, and an electric frying pan. The present embodiment of the application is described by taking the cooking utensil 1 as an electric stove as an example.

[0049] In other embodiments, different functions can be integrated into the cooking appliance 1 according to user needs, such as an electric oven integrated stove, etc., to improve the convenience of use.

[0050] The cooking container is placed on the heating device 10 , and thus, the heating device 10 can heat the cooking container to achieve cooking.

[0051] Another aspect of the present application embodiment provides a heating device 10, please refer to Figure 2 , including a heating component 11 and a temperature control component 12.

[0052] The heating assembly 11 has a hollow area 11a. At least a portion of the upper surface of the heating assembly 11 defines a support surface 11b, which is used to place the container 20 to be heated. It will be understood that, on the one hand, the support surface 11b can provide support for the container 20 to be heated, so that the container 20 to be heated can be stably placed on the heating assembly 11; on the other hand, the heating assembly 11 can transfer heat to the container 20 to be heated through the support surface 11b, thereby heating the container 20 to be heated.

[0053] It should be noted that the hollow area 11 a refers to the hollow part of the heating component 11 itself. The specific shape of the hollow area 11 a is not limited and can be circular, elliptical, irregular polygonal, etc.

[0054] It should be noted that the support surface 11b may be parallel to the horizontal plane, or may have an angle within a range of -10° to 10° with the horizontal plane.

[0055] The container 20 to be heated has a space for accommodating food, and the container 20 to be heated can provide support for the food. The heating component 11 can heat the container 20 to be heated, and the container 20 to be heated can transfer heat to the food to achieve cooking of the food.

[0056] A portion of the temperature control component 12 is disposed in the hollow area 11 a . The top of the temperature control component 12 has a heat transfer surface 12 a , which faces the container 20 to be heated and is used to obtain the temperature of the container 20 to be heated.

[0057] It can be understood that the heating device 10 can compare the temperature obtained by the temperature control component 12 with the temperature threshold to achieve temperature control of the heating component 11, which can reduce the possibility of the temperature of the heated container 20 being too high, thereby reducing the possibility of the heated container 20 catching fire during the cooking process, thereby improving the safety of the cooking appliance.

[0058] It should be noted that the specific method in which the heating device 10 controls the temperature of the heating component 11 using the temperature obtained by the temperature control component 12 is not limited. For example, the temperature control component 12 can directly control the temperature of the heating component 11 by comparing the obtained temperature with the temperature threshold; or, the temperature control component 12 converts the obtained temperature into an electrical signal and transmits it to the control system of the heating device 10, which compares it with the temperature threshold to control the temperature of the heating component 11.

[0059] It can be understood that the temperature control component 12 can control the temperature of the heating component 11 by obtaining the temperature of the container to be heated 20, which can reduce the possibility of the continuous heating of the heating component 11 causing the temperature of the container to be heated 20 to be too high, thereby reducing the possibility of the container to be heated 20 catching fire during the cooking process, thereby improving the safety of the cooking appliance.

[0060] When the temperature obtained by the temperature control component 12 is greater than or equal to the temperature threshold, the temperature control component 12 can limit the heat generated by the heating component 11 to reduce the temperature of the container 20 to be heated; when the temperature obtained by the temperature control component 12 is less than the temperature threshold, the temperature control component 12 allows the heating component 11 to generate heat.

[0061] It should be noted that in the application embodiment, the top and bottom directions are Figure 2 The height direction arrow shown is pointing in the direction.

[0062] In the related art, the temperature control component is higher than the bearing surface of the heating component, and the temperature control component contacts the bottom surface of the container to be heated. However, when the container to be heated is placed on the heating component, it is likely to interfere with the temperature control component, and when interference occurs, it may cause the container to be heated to be placed unstably. In addition, a floating structure also needs to be adopted in the height direction to adjust the position of the temperature control component in the height direction, resulting in a complex structure of the heating device.

[0063] In the heating device 10 provided by the embodiment of the present application, in the height direction of the heating device 10, the support surface 11b is higher than the heat transfer surface 12a. When the container 20 to be heated is placed on the heating component 11, the bottom surface of the container 20 to be heated contacts the support surface 11b, and the heat transfer surface 12a does not contact the container 20 to be heated. Thus, there is an air gap between the heat transfer surface 12a and the bottom surface of the container 20 to be heated, and the air in the air gap can transfer the temperature of the bottom surface of the container 20 to be heated to the heat transfer surface 12a, and the heat transfer surface 12a can obtain the temperature of the container to be heated, facilitating temperature control of the heating component 11 according to the temperature. Since the heat transfer surface 12a does not contact the container 20 to be heated, it can avoid interference of the temperature control component 12 with the container 20 to be heated placed on the support surface 11b, facilitating the stable placement of the container 20 to be heated on the support surface 11b. In addition, there is no need to adopt a floating design for the temperature control component 12 in the height direction, which is conducive to making the structure of the heating device 10 simple and facilitating production and manufacturing.

[0064] It should be noted that the specific type of the heating device 10 is not limited.

[0065] In some embodiments, the heating device 10 has a spiral structure that spirally extends around the hollow region 11a. For example, the heating device 10 is bent to form a vortex-shaped heating coil. Of course, in other embodiments, the heating device 10 can also be a heating plate formed by casting, such as an aluminum heating plate.

[0066] In some embodiments, please refer to Figures 4 to 7 , in the height direction of the heating device 10, the distance H between the support surface 11b and the heat transfer surface 12a does not exceed 10 mm, that is, 0 < H ≤ 10 mm. For example, the distance H is 10 mm, 9 mm, 8 mm, 7 mm, 6 mm, etc. It can be understood that while ensuring that the container 20 to be heated placed on the support surface 11b does not interfere with the heat transfer surface 12a, the temperature obtained by the heat transfer surface 12a can be relatively close to the actual temperature of the container 20 to be heated. That is to say, the temperature deviation between the temperature obtained by the heat transfer surface 12a and the actual temperature of the container 20 to be heated is within the allowable deviation range, ensuring the reliability of temperature detection.

[0067] It should be noted that when the container 20 to be heated is placed on the support surface 11b, the distance between the bottom surface of the container 20 to be heated and the heat transfer surface 12a can also be understood as the distance between the support surface 11b and the heat transfer surface 12a.

[0068] In some embodiments, please refer to Figures 4 to 7 In the height direction of the heating device 10, the distance H between the support surface 11b and the heat transfer surface 12a is 3 mm to 5 mm, i.e., 3 mm ≤ H ≤ 5 mm. For example, the distance H is 3 mm, 4 mm, 5 mm, and so on. Thus, the appropriate distance H between the support surface 11b and the heat transfer surface 12a ensures an appropriate air gap between the container 20 to be heated and the heat transfer surface 12a, minimizing the temperature deviation between the temperature obtained by the heat transfer surface 12a and the actual temperature of the container 20 to be heated.

[0069] In some embodiments, please refer to Figure 3 The outer contour of the temperature control component 12 is spaced apart from the heating component 11, that is, the temperature control component 12 and the heating component 11 do not contact each other. It is understood that the space 121b between the outer contour of the temperature control component 12 and the heating component 11 can reduce the impact of the heat generated by the heating component 11 on the temperature control component 12, thereby reducing the impact of the heat generated by the heating component 11 on the temperature obtained by the heat transfer surface 12a, thereby increasing the temperature obtained by the heat transfer surface 12a to be closer to the actual temperature of the container 20 to be heated, thereby improving the reliability of the temperature control component 12 on the heating component 11 and improving the safety of the cooking appliance 1.

[0070] It should be noted that the distance between the outer contour of the temperature control component 12 and the heating component 11 is not limited.

[0071] It should be noted that the specific manner in which the temperature control component 12 prevents or allows the heating component 11 to generate heat is not limited.

[0072] In some embodiments, please refer to Figure 3 The temperature control assembly 12 includes a housing 121 and a thermostat 122. The housing 121 has a receiving space 121a. It is understood that the housing 121, as the appearance of the temperature control assembly 12, has a certain structural strength and can provide protection for the structure within the receiving space 121a.

[0073] It should be noted that the specific shape of the housing 121 is not limited.

[0074] At least a portion of the thermostat 122 is housed within the accommodating space 121a. The thermostat 122 and the heating assembly 11 are connected in series in a circuit, and the thermostat 122 is used to open or close the circuit. It will be appreciated that when the thermostat 122 senses that the temperature obtained by the heat transfer surface 12a exceeds a temperature threshold, the thermostat 122 will open the circuit to stop the heating assembly 11 from continuing to heat the container 20 to be heated, thereby lowering the temperature of the container 20 to be heated. When the thermostat 122 senses that the temperature obtained by the heat transfer surface 12a is below the temperature threshold, the thermostat 122 will close the circuit, and the heating assembly 11 will continue to heat the container 20 to be heated. This reduces the possibility of excessively high temperatures in the container 20 to be heated, leading to cooking fires, thereby improving the safety of the cooking appliance 1.

[0075] It should be noted that the thermostat 122 can be a physical switch formed by its own structure to control the disconnection or conduction of the circuit, for example, by utilizing the thermal expansion or contraction of the material in the thermostat 122 to achieve the disconnection or conduction of the circuit; the thermostat 122 can also be an internal controller to control the disconnection or conduction of the circuit, for example, by converting the temperature into an electrical signal through a thermocouple on the surface of the thermostat 122 and transmitting it to the controller, and the controller compares the received temperature electrical signal with the temperature threshold to control the disconnection or conduction of the circuit.

[0076] It should be noted that the specific method by which the thermostat 122 senses the temperature of the heat transfer surface 12a is not limited. It can be obtained by air transfer between the heat transfer surface 12a and the thermostat 122, or by direct contact between the thermostat 122 and the heat transfer surface 12a.

[0077] In some embodiments, please refer to Figure 3 The thermostat 122 is directly or indirectly fixed to the housing 121, that is, the thermostat 122 can be stationary relative to the housing 121. It can be understood that, on the one hand, it can reduce the structure required to establish a floating relationship between the thermostat 122 and the housing 121, thereby making the structure of the temperature control assembly 12 compact and easy to manufacture; on the other hand, it can reduce the shaking of the thermostat 122 relative to the housing 121, thereby ensuring the operational stability of the thermostat 122.

[0078] It should be noted that the thermostat 122 being directly or indirectly fixed to the housing 121 means that the thermostat 122 is connected to the housing 121 through its own structure, or the thermostat 122 is fixed to the housing 121 through other structures.

[0079] In some embodiments, please refer to Figure 3 、 Figure 4 and Figure 5The entire thermostat 122 is housed in the accommodation space 121a, and the top surface of the housing 121 defines a heat transfer surface 12a. Thus, when the container 20 to be heated is placed on the heating assembly 11, the top surface of the housing 121 is relatively close to the container 20 to be heated. Therefore, the heat transfer surface 12a defined by the top surface of the housing 121 can quickly acquire the temperature of the container 20 to be heated.

[0080] It should be noted that the top surface of the housing 121 may be a substantially flat surface.

[0081] For example, please refer to Figure 11 and Figure 12 The top surface of the housing 121 partially bulges upward to form a protrusion 121d. The top surface of the protrusion 121d defines the heat transfer surface 12a, and the protrusion 121d wraps around the top of the thermostat 122. It will be appreciated that when the container 20 to be heated is placed on the support surface 11b, the top surface of the protrusion 121d is close to the bottom of the container 20 to be heated. In this way, the protrusion 121d, including the top of the thermostat 122, facilitates the protrusion 121d to directly transfer temperature to the thermostat 122, allowing the thermostat 122 to obtain the temperature of the heat transfer surface 12a earlier. In addition, the protrusion 121d also serves to protect the thermostat 122, reducing the possibility of damage to the thermostat 122 due to collision with the container 20 to be heated.

[0082] In some embodiments, please refer to Figure 3 、 Figure 4 and Figure 5 The housing 121 has a top wall, and the temperature control assembly 12 includes a temperature control bracket 123. The temperature control bracket 123 is supported within the accommodating space 121a. The thermostat 122 is disposed on the temperature control bracket 123, and the temperature control bracket 123 is connected to the top wall. It is understood that the temperature obtained by the heat transfer surface 12a can be transferred to the temperature control bracket 123 through the top wall of the housing 121, and the temperature control bracket 123 transfers it to the thermostat 122. In this way, the temperature transfer through the contact between the temperature control bracket 123 and the thermostat 122 can make the temperature obtained by the thermostat 122 more reliable, thereby improving the reliability of the thermostat 122 in disconnecting or connecting the circuit where the heating assembly 11 is located.

[0083] Exemplarily, the thermostat 122 is located at the bottom of the temperature control bracket 123, and a bracket hole 123a is provided at the connection between the temperature control bracket 123 and the thermostat 122. In this way, the air between the temperature control bracket 123 and the shell 121 can pass through the bracket hole 123a and contact the thermostat 122, so that the thermostat 122 can obtain the temperature of the heat transfer surface 12a by transferring heat through the air, which is beneficial for the thermostat 122 to obtain the temperature of the heat transfer surface 12a.

[0084] It should be noted that the specific manufacturing materials of the housing 121 and the temperature control bracket 123 are not limited, as long as they have good thermal conductivity.

[0085] For example, please refer to Figure 3 The top surface of the shell 121 has a heat dissipation structure 121c. It can be understood that the heat dissipation structure 121c can increase the contact area between the top surface of the shell 121 and the air, making it easier for the air to take away the heat accumulated on the top surface of the shell 121, so that the internal thermostat 122 is in a suitable working environment, thereby improving the working stability of the thermostat 122.

[0086] In an embodiment in which the top surface of the outer shell 121 defines a heat transfer surface 12a, the presence of the heat dissipation structure 121c can increase the contact area between the heat transfer surface 12a and the air, so that the heat transfer surface 12a can obtain as much temperature as possible from the container to be heated 20, thereby improving the reliability of the temperature controller 122 in disconnecting or conducting the circuit.

[0087] It should be noted that the specific form of the heat dissipation structure 121 c is not limited. For example, it can be formed by a protrusion on the top surface of the housing 121 facing away from the accommodating space 121 a.

[0088] It should be noted that the specific shape of the heat dissipation structure 121c is not limited. For example, the heat dissipation structure 121c is substantially in the shape of a ring, an ellipse, or an irregular polygon.

[0089] Exemplarily, the top surface of the housing 121 is a closed surface, which can reduce the possibility of external impurities entering the accommodating space 121a through the top surface of the housing 121, thereby reducing the possibility of the thermostat 122 being damaged by the impurities.

[0090] In some embodiments, please refer to Figure 6 and Figure 7 The top of the thermostat 122 passes through the top wall. It is understood that the thermostat 122 can be as close as possible to the container 20 to be heated, so that the thermostat 122 can obtain the temperature of the container 20 to be heated in a timely manner, and facilitate the thermostat 122 to promptly disconnect or connect the circuit where the heating component 11 is located, which can reduce the possibility of cooking fire caused by excessive temperature in the container 20 to be heated, thereby improving the safety of the cooking appliance 1.

[0091] Exemplarily, the temperature control assembly 12 further includes a heat conductor (not shown), which is disposed at the top of the thermostat 122. The surface of the heat conductor facing away from the thermostat 122 defines a heat transfer surface 12a. Thus, the heat conductor can promptly transmit the acquired temperature of the container to be heated to the thermostat 122, facilitating the thermostat 122 to promptly disconnect or connect the circuit where the heating assembly 11 is located. Furthermore, the heat conductor can reduce the adhesion of impurities to the top of the thermostat 122, thereby protecting the thermostat 122 and facilitating stable operation of the thermostat 122.

[0092] It should be noted that the specific structure of the heat conducting member is not limited and it can be a metal member or made of other heat conducting materials.

[0093] It should be noted that, in this embodiment, the fixing method of the thermostat 122 is not limited, and it can be directly or indirectly connected to the housing.

[0094] Exemplarily, the top of the thermostat 122 is connected to the top wall so that when the top of the thermostat 122 passes through the top wall, no gap is formed at the top wall, thereby reducing the possibility of impurities from the external environment entering the accommodating space 121a from the top wall, thereby reducing the possibility of the thermostat 122 being damaged by impurities.

[0095] In some embodiments, please refer to Figure 3 The shell 121 includes a cylinder 1212 and a cover 1211. The cover 1211 is arranged on the top of the cylinder 1212 and encloses an accommodating space 121a.

[0096] It should be noted that a portion of the surface of the cover 1211 forms the top surface of the housing 121. In the embodiment where the housing 121 has a heat dissipation structure 121c, the heat dissipation structure 121c is located on the cover 1211.

[0097] Please refer to Figure 3 The side wall of the cylinder 1212 has at least one through hole 1212a. It is understood that the through hole 1212a can connect the external environment with the accommodating space 121a, and the air from the external environment can flow into the accommodating space 121a through the through hole 1212a, which can accelerate the flow of air in the accommodating space 121a.

[0098] Please refer to Figure 3The edge of the cover 1211 is folded downward to form a skirt 1211a. The skirt 1211a surrounds the outer circumference of the barrel 1212 and forms a space 121b with the outer circumferential surface of the barrel 1212. At least one through-hole 1212a communicates with the space 121b to form a heat dissipation channel. It will be appreciated that the heat dissipation channel can improve air flow between the space 121b and the accommodating space 121a, thereby facilitating heat dissipation from the thermostat 122 within the accommodating space 121a and improving the thermostat 122's ability to sense temperature.

[0099] It should be noted that the skirt 1211a formed by the folding is not limited to the structure formed by the folding in the sheet metal process, and any sheet-like or block-like structure formed on the edge of the cover 1211 belongs to the skirt 1211a.

[0100] The skirt 1211a blocks at least one through hole 1212a along the circumference of the cylinder 1212. Thus, the skirt 1211a can block impurities in the air entering the accommodating space 121a through the through hole 1212a, thereby reducing the possibility of impurities entering the accommodating space 121a through the through hole 1212a.

[0101] For example, the end of the barrel 1212 away from the cover 1211 has a plurality of holes. It is understood that the holes can connect the accommodating space 121a with the external environment, so that the air in the accommodating space 121a can exchange heat with the air in the external environment through the holes, which is beneficial to improving the heat dissipation capacity of the barrel 1212. In addition, when the liquid in the accommodating space 121a can also flow out through the holes, it can reduce the difficulty of cleaning for the user.

[0102] In some embodiments, please refer to Figure 2 and Figure 3 The heating device 10 includes a plurality of fixed brackets 13, which are arranged at intervals along the circumference of the outer shell 121. One end of the fixed bracket 13 is connected to the outer shell 121, and the other end extends toward the bottom of the heating component 11. The fixed bracket 13 is used to support the heating component 11. It will be understood that during the assembly process of the heating device 10, the fixed bracket 13 can position the heating component 11 and the temperature control component 12, thereby facilitating the assembly of the heating device 10. In addition, when the container 20 to be heated is placed on the heating component 11, the fixed bracket 13 can provide support for the heating component 11, so that the heating component 11 can stably support the container 20 to be heated.

[0103] Illustratively, the fixing bracket 13 has a limiting structure 13 a on a side facing the heating component 11 , so that the fixing bracket 13 can fix the heating component 11 and improve the stability of the heating component 11 .

[0104] In the embodiment where the housing 121 includes a barrel 1212 and a cover 1211, a branch structure 13b is formed on one end of the fixing bracket 13 for connection to the housing 121. One side of the branch structure 13b is connected to the cover 1211, and the other side is connected to the barrel 1212. This improves the connection strength between the barrel 1212 and the cover 1211. In this embodiment, the cover 1211 does not need to be in contact with the barrel 1212 and does not need to rely on the support of the barrel 1212. This allows an air gap to exist between the cover 1211 and the barrel 1212, facilitating air entry into the barrel 1212 and improving the heat dissipation capacity within the housing 121.

[0105] In some embodiments, please refer to Figures 8 to 12 The heating device 10 includes a protective tube 14 that surrounds the outer circumference of the outer shell 121. The top of the protective tube 14 is no higher than the support surface 11b in the height direction of the heating device 10. It will be appreciated that the protective tube 14 reduces the impact of heat generated by the heating component 11 during operation on the outer shell 121, allowing the heat transfer surface 12a to obtain a temperature close to the actual temperature of the container 20 to be heated, thereby facilitating temperature control of the heating component 11.

[0106] In addition, the top of the protective tube 14 is not higher than the support surface 11b, which can reduce the interference of the protective tube 14 with the container 20 to be heated placed on the support surface 11b, making it easier for the container 20 to be heated to be stably placed on the support surface 11b.

[0107] It should be noted that the material of the protective tube 14 is not limited, for example, it can be a metal part or other heat insulating parts.

[0108] In some embodiments, please refer to Figure 8 and Figure 9 The protective tube 14 is connected to the fixed bracket 13 and is spaced apart from the outer shell 121. It is understood that the presence of an air gap between the protective tube 14 and the outer shell 121 facilitates heat exchange between the air and the outer shell 121, thereby reducing heat accumulation around the outer shell 121 and allowing the heat transfer surface 12a to achieve a temperature close to the actual temperature of the container 20 to be heated.

[0109] It should be noted that the specific connection method between the protective tube 14 and the fixing bracket 13 is not limited.

[0110] In some embodiments, the protective tube 14 and the fixed bracket 13 are fixedly connected, for example, by welding. This can improve the connection strength between the protective tube 14 and the fixed bracket 13 and minimize the possibility of the protective tube 14 falling off the fixed bracket 13 during use or transportation of the heating device 10.

[0111] In other embodiments, the protective tube 14 and the fixed bracket 13 are detachably connected, so that the user can remove the protective tube 14 for cleaning, thereby improving the cleaning convenience of the user.

[0112] In some embodiments, please refer to Figure 9 The sidewall of the protective tube 14 has a plurality of openings 14a extending vertically through the bottom surface of the protective tube 14. One end of the fixing bracket 13 extends through the openings 14a. As will be appreciated, the protective tube 14 can be connected to the fixing bracket 13 by inserting one end of the fixing bracket 13 into the openings 14a. This reduces shaking of the protective tube 14 during use and improves its stability.

[0113] It should be noted that the specific number and shape of the opening slots 14 a are not limited, as long as one end of the fixing bracket 13 can pass through the opening slot 14 a.

[0114] The various embodiments / implementations provided in this application can be combined with each other if no contradiction occurs. The various embodiments / implementations provided in this application can be combined with each other if no contradiction occurs.

[0115] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A heating device for a cooking utensil, characterized in that: include: A heating assembly having a hollow area, wherein at least a portion of an upper surface of the heating assembly defines a support surface for placing a container to be heated; a temperature control component, a portion of which is disposed in the hollow region, and a heat transfer surface is provided on the top of the temperature control component, the heat transfer surface facing the container to be heated, for obtaining the temperature of the container to be heated; Wherein, in the height direction of the heating device, the supporting surface is higher than the heat transfer surface.

2. The heating device according to claim 1, characterized in that In the height direction of the heating device, the distance between the supporting surface and the heat transfer surface does not exceed 10 mm.

3. The heating device according to claim 2, characterized in that In the height direction of the heating device, the distance between the support surface and the heat transfer surface is 3 mm to 5 mm.

4. The heating device according to claim 1, characterized in that The outer contour of the temperature control component is spaced apart from the heating component.

5. The heating device according to claim 1, characterized in that The temperature control component includes: a housing having a receiving space; A thermostat, at least a portion of which is accommodated in the accommodation space, the thermostat and the heating component are connected in series in a circuit, and the thermostat is used to disconnect or connect the circuit.

6. The heating device according to claim 5, characterized in that The thermostat is fixed to the housing directly or indirectly.

7. The heating device according to claim 6, characterized in that The entire thermostat is accommodated in the accommodation space, and the top surface of the shell defines the heat transfer surface.

8. The heating device according to claim 7, characterized in that The housing has a top wall, the temperature control component includes a temperature control bracket, the temperature controller is arranged on the temperature control bracket, and the temperature control bracket is connected to the top wall.

9. The heating device according to claim 6, characterized in that The housing has a top wall, and the top end of the thermostat passes through the top wall.

10. The heating device according to claim 5, characterized in that The shell includes a cylinder and a cover, wherein the cover is arranged on the top of the cylinder and encloses the accommodation space; The side wall of the cylinder has at least one through hole; the edge of the cover is folded toward the bottom to form a skirt, the skirt surrounds the outer circumference of the cylinder, and forms a spacing space with the outer circumferential surface of the cylinder, and the at least one through hole is connected to the spacing space to form a heat dissipation channel, wherein, in the circumference of the cylinder, the skirt blocks the at least one through hole.

11. The heating device according to claim 5, characterized in that The heating device includes a plurality of fixing brackets connected to the shell and arranged at intervals along the circumference of the shell. The heating component is a spiral structure extending spirally around the hollow area, and the heating component is supported on the fixing brackets.

12. The heating device according to claim 11, characterized in that The heating device includes a protective tube surrounding the outer circumference of the housing; Wherein, in the height direction of the heating device, the top end of the protective tube is not higher than the supporting surface.

13. The heating device according to claim 12, characterized in that The protective tube is connected to the fixing bracket and is spaced apart from the outer shell.

14. The heating device according to claim 12, characterized in that The side wall of the protective tube has a plurality of opening slots, the opening slots penetrate the bottom end surface of the protective tube along the height direction, and one end of the fixing bracket passes through the opening slot.

15. A cooking utensil, characterized in that: The heating device comprises the heating device according to any one of claims 1 to 14.

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