Cooking utensil
By setting a conductive ring on the bottom of the cookware and setting detection electrodes on the panel, the problem of lag in cookware temperature detection is solved, enabling accurate monitoring of cookware temperature and optimized energy utilization.
Patent Information
- Application Number
- CN202520012844.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-03
AI Technical Summary
In existing technologies, the temperature detection of the pot body is delayed, making it impossible to obtain the actual temperature in a timely manner. This results in inaccurate temperature control, affecting the food cooking effect and energy utilization efficiency.
A conductive ring is set on the bottom surface of the cookware and detection electrodes are set on the panel. The conductive ring is made of a material whose resistivity changes with temperature. A circuit is formed through multiple electrode segments to calculate the average temperature of the cookware, avoiding the error of single-point temperature detection.
It enables precise monitoring of cookware temperature, provides accurate temperature control basis, optimizes energy use, and avoids unnecessary energy waste.
Smart Images
Figure CN223873770U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrical technology, and in particular to cooking appliances. Background Technology
[0002] Temperature control is an essential factor in cooking. As the core tool in the cooking process, the precise monitoring of the pot's temperature is crucial for ensuring food safety, nutrition, taste, and appearance. Precise temperature control allows food to be cooked just right, avoiding overcooking or undercooking, thus maintaining optimal texture and color. Furthermore, monitoring the pot's temperature allows for optimized energy use, preventing unnecessary energy waste and achieving energy-efficient cooking.
[0003] However, existing technologies typically use temperature sensors, but because induction cookers have high heating power and the pot body is heated in a concentrated manner, the temperature sensor has a certain lag in detecting the pot body's temperature and cannot obtain the actual temperature of the pot body in a timely manner. Utility Model Content
[0004] Therefore, it is necessary to provide a cooking utensil to address the problem of poor temperature measurement accuracy in existing cookware.
[0005] A cooking appliance includes a heating element and a pot. The heating element includes a panel with a heating surface having a detection electrode. The detection electrode has a ring structure and includes at least three independently arranged electrode segments. The pot has a planar bottom surface with a ring-shaped conductive ring. The conductive ring is made of a material whose resistivity changes with temperature. When the pot is placed on the heating surface, there are two contact points between the detection electrode and the conductive ring, and the two contact points are located on different electrode segments.
[0006] In one embodiment, the electrode segments are dot-shaped, and multiple electrode segments are continuously distributed in a ring to form the detection electrode.
[0007] In one embodiment, the conductive ring includes a first resistance segment and a second resistance segment, which are located on both sides of the two contact points, respectively. In the circuit formed by the conductive ring and the detection electrode, the first resistance segment and the second resistance segment are connected in parallel.
[0008] In one embodiment, the cooking appliance further includes a detection element connected to the conductive ring for detecting the resistance of the conductive ring, wherein the resistance of the conductive ring is the resistance of the first resistance segment and the second resistance segment connected in parallel.
[0009] In one embodiment, when the positions of the cookware and the detection electrode remain unchanged, the resistance of the conductive ring is positively or negatively correlated with the temperature of the cookware.
[0010] In one embodiment, the diameter of the conductive ring is equal to the diameter of the detection electrode.
[0011] In one embodiment, the conductive ring is a thermistor ring.
[0012] In one embodiment, the heating assembly further includes a heating element located below the panel, the heating element having a ring structure, the detection electrode being aligned with the heating element, and the detection electrode and the heating element being concentrically arranged.
[0013] In one embodiment, the heating assembly further includes a bracket, the heating element is connected to the bracket, and the bracket is movable relative to the panel in a direction parallel to the heating surface, with a set position aligned with the detection electrode in the movement path of the heating element.
[0014] In one embodiment, the support is movable in at least two directions that are angled together.
[0015] The cooking appliance described above utilizes a detection electrode on the control panel and a conductive ring on the bottom surface of the pot. The conductive ring is made of a material whose resistivity changes with temperature. When the pot is placed on the heating surface, the conductive ring forms two contact points with different segments of the detection electrode. When the conductive material contacts electrode segments with different amounts of resistance, conductivity is established, forming a circuit. This triggers the corresponding electrode segment of the detection electrode, locating the contact point between the conductive ring and the detection electrode. The temperature of the conductive ring is calculated based on the resistance of the formed circuit, and the average temperature of the pot is obtained from the temperature of the conductive ring. This allows for temperature monitoring and provides a basis for adjusting the temperature according to different cooking needs. Compared to a temperature sensor placed at any point on the pot, this method better reflects the average temperature of the pot, avoiding the inaccurate detection problems that can occur with single-point temperature sensing. Attached Figure Description
[0016] Figure 1 This is an exploded structural diagram of a cooking appliance in one embodiment of this application.
[0017] Figure 2 for Figure 1 A cross-sectional exploded view of a Chinese cooking utensil.
[0018] Figure 3 for Figure 2 A diagram illustrating the centering and offset of a pot in a Chinese cooking appliance, wherein... Figure 3 (a) is a schematic diagram of the pot being centered.Figure 3 Fig. 4 is a schematic view of the cooking utensil of Fig. 1, wherein (a) is a schematic view of the cooking utensil with the detection electrode offset from the pot and the base moving compensation, (b) is a schematic view of the cooking utensil with the detection electrode offset from the pot and the base moving compensation, and (c) is a schematic view of the cooking utensil with the detection electrode offset from the pot and the base moving compensation.
[0019] Figure 4 Fig. 5 is a position diagram of the detection electrode and the conductive ring in the cooking utensil in an embodiment of the present application.
[0020] Figure 5 Fig. 6 is a position diagram of the detection electrode and the conductive ring in the cooking utensil in an embodiment of the present application, wherein, Figure 5 Fig. 7 is a schematic view of the cooking utensil of Fig. 6, wherein (a) is a schematic view of the cooking utensil with the diameter of the conductive ring less than the diameter of the detection electrode and without contact, (b) is a schematic view of the cooking utensil with the diameter of the conductive ring less than the diameter of the detection electrode and with contact, (c) is a schematic view of the cooking utensil with the diameter of the conductive ring greater than the diameter of the detection electrode and without contact, and (d) is a schematic view of the cooking utensil with the diameter of the conductive ring greater than the diameter of the detection electrode and without contact. Figure 5 Figure 5 Figure 5
[0021] BRIEF DESCRIPTION OF THE DRAWINGS
[0022] 100, cooking utensil; 110, heating assembly; 111, panel; 1111, heating surface; 112, heating element; 113, detection electrode; 1131, electrode segment; 114, bracket; 115, control board; 116, bottom plate; 117, power board; 118, glass plate; 120, pot; 121, bottom surface; 122, conductive ring; 1221, first resistance segment; 1222, second resistance segment. DETAILED DESCRIPTION
[0023] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other different ways than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.
[0024] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.
[0025] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.
[0026] In this application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0027] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under the second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0028] It is to be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there can be an intervening element. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used herein are used only for the purpose of illustration and do not indicate the only embodiment.
[0029] Referring to Figure 1 , Figure 1 An exploded structural schematic view of a cooking utensil 100 in an embodiment of the present application is shown. The cooking utensil 100 provided in an embodiment of the present application is used for cooking foodstuff. As shown in the figure, the cooking utensil 100 comprises a heating assembly 110 and a pot 120, wherein the pot 120 is used for containing foodstuff and the heating assembly 110 is used for heating the pot 120 and the foodstuff inside the pot 120 for cooking. Figure 1
[0030] In combination with Figure 2 shown, Figure 2 An exploded cross-sectional schematic view of the cooking utensil 100 in an embodiment of the present application is shown. The heating assembly 110 comprises a panel 111. The panel 111 comprises a heating surface 1111 provided with a detection electrode 113. The detection electrode 113 is in a ring structure, is connected to a power supply and has an electric potential. The detection electrode 113 comprises at least three independently arranged electrode segments 1131. The independently arranged electrode segments 1131 are not connected to each other, each has an electric potential and different electrode segments 1131 have a voltage difference. The pot 120 comprises a bottom surface 121 arranged in a plane, and the bottom surface 121 is provided with a conductive ring 122 in a ring structure.
[0031] The conductive ring 122 is a piece of material with a temperature-dependent resistivity. When the conductive material contacts the electrode segments 1131 with different contact amounts, an electric circuit is formed, thereby triggering the corresponding electrode segments 1131 of the detection electrode 113 to locate the contact point of the conductive ring 122 and the detection electrode 113, and to calculate the temperature of the conductive ring 122 according to the resistance of the formed electric circuit, and further to obtain the average temperature of the pot 120 through the temperature of the conductive ring 122.
[0032] In one embodiment, the conductive ring 122 is a thermistor ring. In other embodiments, the conductive ring 122 can also be made of metal thermistor material, other temperature-dependent resistivity materials such as graphite, carbon, and silicon. It can be understood that the resistivity changes with temperature, which does not mean that the resistivity and temperature are in direct or inverse proportion. They can be positively correlated, negatively correlated, or even have a certain change rule. The resistivity at a set temperature is stable, but there is no correlation.
[0033] As shown in Figure 1 and Figure 2 In some embodiments, the heating assembly 110 further comprises a control panel 115 for displaying the working status and / or working time of the heating assembly 110, and can also be used for touch or button switching to adjust the working status of the heating assembly 110.
[0034] As shown in Figure 4 and Figure 5 When the pot 120 is placed on the heating surface 1111, the conductive ring 122 at the bottom surface 121 of the pot 120 and the detection electrode 113 at the heating element 112 will have two contact points, and the two contact points between the conductive ring 122 and the detection electrode 113 are located at different electrode segments 1131, so that an electric circuit is formed between the conductive ring 122 and the detection electrode 113, thereby triggering the corresponding electrode segment 1131 of the detection electrode 113, positioning the position of the contact point according to the position of the electrode segment 1131, obtaining the angle of the central angle corresponding to the two contact points, and calculating the temperature of the conductive ring 122 according to the resistance of the formed circuit, and then obtaining the average temperature of the pot 120 through the temperature of the conductive ring 122.
[0035] Therefore, the more the number of electrode segments 1131, the more accurate the positioning of the two contact points, and the more accurate the offset distance and offset angle obtained.
[0036] In one embodiment, the electrode segments 1131 are point-shaped, and a plurality of electrode segments 1131 are continuously distributed along the ring to form the detection electrode 113, so as to obtain more accurate contact point positioning and more accurate offset distance and offset angle calculation and more accurate pot 120 average temperature calculation.
[0037] As shown in Figure 4 In one embodiment, the conductive ring 122 comprises a first resistance segment 1221 and a second resistance segment 1222, and the first resistance segment 1221 and the second resistance segment 1222 are respectively located on the two sides of the two contact points, and the first resistance segment 1221 and the second resistance segment 1222 are connected in parallel in the electric circuit formed by the conductive ring 122 and the detection electrode 113. Figure 4 In the embodiment, the contact points of the detection electrode 113 and the conductive ring 122 are M point and N point respectively, the contact point M point corresponds to the central angle of the detection electrode 113 Angle is α1, the contact point N point corresponds to the central angle of the detection electrode 113 Angle is α2, and the view angle is Figure 4 In the embodiment, the first resistance segment 1221 is located on the left side of the M point and the N point, and the second resistance segment 1222 is located on the right side of the M point and the N point, which is only for illustration and is not limited.
[0038] When the two contact points between the conductive ring 122 and the heating element 112 are located at different electrode segments 1131, a circuit can be formed. Therefore, as Figure 4 As shown, in one embodiment, the cooking appliance 100 further includes a detection element connected to the conductive ring 122. The detection element detects the resistance R0 of the conductive ring 122. It directly measures the resistance R0 and calculates the length L1 of the first resistance segment 1221 and the length L2 of the second resistance segment 1222 by locating the contact point in the detection electrode 113. This allows it to determine the resistivity ρ of the conductive ring 122 at that moment. The obtained resistivity ρ is then compared with the relationship between the resistivity ρ of the material and temperature to confirm that the temperature corresponding to the resistivity ρ is the average temperature of the cookware 120. The resistance R0 of the conductive ring 122 measured by the detection element is the resistance of the first resistance segment R1 and the second resistance segment R2 connected in parallel. In the parallel circuit, the total resistance (i.e., the overall resistance of the conductive ring 122) is...
[0039] like Figure 4 As shown, in one embodiment, when the positions of the cookware 120 and the detection electrode 113 remain unchanged, the resistance R0 of the conductive ring 122 is positively or negatively correlated with the temperature of the cookware 120. Since the conductive ring 122 is made of a material whose resistivity ρ changes with temperature, that is, the resistivity ρ of the conductive ring 122 is positively or negatively correlated with the temperature of the cookware 120. When the radius of the conductive ring 122 is r, the resistance R1 of the first resistance segment 1221 is ρL1, and the resistance R2 of the second resistance segment is ρL2. Then, in this circuit, the overall resistance of the conductive ring 122 is... Normally, during use, the radius r of the conductive ring 122 does not change, so the overall resistance R0 of the conductive ring 122 is positively or negatively correlated with the temperature of the cookware 120.
[0040] Combination Figure 4 As shown, for ease of explanation, let the center of the detection electrode 113 be O1, the center of the conductive ring 122 be O2, and the radius of the conductive ring 122 be r, the radius of the detection electrode 113 be R, and the contact points of the detection electrode 113 and the conductive ring 122 be M and N, respectively. The angle corresponding to the central angle of the detection electrode 113 at contact point M is α1, and the angle corresponding to the central angle of the detection electrode 113 at contact point N is α2. Then the length of the first resistance segment 1221 is... The length L2 of the second resistor segment 1222 is L2 = 2πr - L1. At this point, the overall resistance of the conductive ring 122 is... Once the overall resistance R0 of the conductive ring 122 is measured, the resistivity of the conductive ring 122 can be calculated.
[0041]
[0042] For ease of calculation, in one embodiment, the diameter of the conductive ring 122 is equal to the diameter of the detection electrode 113. Let the radius of both the conductive ring 122 and the detection electrode 113 be r. Then, when α2-α1≤180°, the length L1 of the first resistance segment 1221 is r(α2-α1). However, when α2-α1>180°, the length L1 of the first resistance segment 1221 is r(2π-α2+α1). The length L2 of the second resistance segment 1222 is 2πr-L1. At this point, the overall resistance of the conductive ring 122 is... Once the overall resistance R0 of the conductive ring 122 is measured, the resistivity of the conductive ring 122 can be calculated.
[0043] In one embodiment, the heating assembly 110 further includes a heating element 112 located below the panel 111. The heating element 112 generates heat to heat the cookware 120. In this embodiment, the heating element 112 is a heating coil. The heating assembly 110 also includes a power board 117, to which the heating element 112 is energized and connected, so that the power board 117 supplies power to the heating element 112. The heating element 112 has a ring structure, and the detection electrode 113 is aligned with the heating element 112, and the detection electrode 113 and the heating element 112 are concentrically arranged.
[0044] In this embodiment, the top of the pot 120 is provided with a cooking cavity for placing food ingredients. The position of the conductive ring 122 corresponds to the cooking cavity, and the line connecting the center of the conductive ring 122 and the center of the cooking cavity is perpendicular to the bottom surface 121.
[0045] like Figure 1 Figure 2 As shown, in some embodiments, the heating assembly 110 further includes a glass plate 118 located in the area where the heating element 112 is located, for transferring heat from the heating element 112 to the cookware 120. In this embodiment, the glass plate 118 is made of microcrystalline glass.
[0046] Understandably, in actual use, since both the heating surface 1111 and the bottom surface 121 are flat, the placement of the pot 120 and the position of the heating element 112 are prone to misalignment, such as... Figure 4 and Figure 5As shown, in one of the embodiments, when the pot 120 is placed on the heating surface 1111, when the two are offset, the conductive ring 122 located on the bottom surface 121 of the pot 120 and the detection electrode 113 located on the heating element 112 will have two contact points, the two contact points between the conductive ring 122 and the detection electrode 113 are located on different electrode segments 1131, so that an electric circuit is formed between the conductive ring 122 and the detection electrode 113, thereby triggering the corresponding electrode segment 1131 of the detection electrode 113, and positioning the position of the contact point according to the position of the electrode segment 1131, obtaining the angle of the central angle corresponding to the two contact points, and calculating the temperature of the conductive ring 122 according to the resistance of the formed circuit, and then obtaining the average temperature of the pot 120 through the temperature of the conductive ring 122.
[0047] It can be understood that when the number of electrode segments 1131 is two, according to the positions of the two electrode segments 1131, the contact point can only indicate that the pot 120 is offset left or right or up and down, but it is not convenient to position the specific position of the contact point. But combined with the demand for calculating the temperature of the conductive ring 122 according to the resistance of the formed circuit, and then obtaining the average temperature of the pot 120 through the temperature of the conductive ring 122, in this application, at least three electrode segments 1131 are described, when the number of electrode segments 1131 is three, the probability of two contact points between the conductive ring 122 and the heating element 112 being in the same electrode segment 1131 is low.
[0048] It can be understood that when the position of the contact point is positioned according to the position of the electrode segment 1131, the angle of the central angle corresponding to the two contact points is obtained, the offset direction of the pot 120 has been obtained, and the offset distance of the pot 120 can be obtained by calculation. As Figures 1 to 3 As shown, in one of the embodiments, the heating assembly 110 further comprises a bracket 114, and in this embodiment, the heating assembly 110 further comprises a bottom disc 116, the panel 111 covers the surface of the bottom disc 116, and the heating element 112 and the bracket 114 are placed in the placement space formed by the bottom disc 116 and the panel 111. Figure 2 As shown, the heating element 112 is connected to the bracket 114, and the bracket 114 is movably arranged relative to the bottom disc 116 and the panel 111 in a direction parallel to the heating surface 1111, and the heating element 112 moves synchronously with the bracket 114 to compensate for the offset between the pot 120 and the heating element 112 by the position movement of the bracket 114, so that the heating element 112 is centered with the pot 120 after moving with the bracket 114, that is, the heating element 112 and the pot 120 are concentrically arranged, to avoid uneven heating of the pot 120 and waste of heat of the heating element 112.
[0049] As shown, Figure 3 As shown, Figure 3 (a) is a schematic view when the pot is centered,Figure 3 Fig. 4 is a schematic view of the pot 120 offset and the base moving compensation of the present application, in one embodiment, the support 114 is movable in at least two directions arranged at an angle to adjust the position of the support 114, and thus the position of the heating element 112, to compensate for the offset between the pot 120 and the heating element 112. Preferably, the support 114 is movably arranged in two directions arranged at a right angle.
[0050] In other embodiments, the diameter of the conductive ring 122 can also be different from the diameter of the detection electrode 113. For example, Figure 5 Fig. 4(a) and Fig. 4(b) show that the diameter of the conductive ring 122 can be smaller than the diameter of the detection electrode 113, in which case, as shown in Fig. 4(a), when the offset of the pot 120 is not large, the two will not be in contact, and thus the average temperature of the pot 120 at this time cannot be measured, but as shown in Fig. 4(b), when the offset between the pot 120 and the heating element 112 is large, the two have two contact points, and thus the resistivity p of the conductive member is calculated according to the position of the contact points and the resistance of the conductive member at this time, and thus the average temperature of the pot 120 is obtained. Figure 5 Figure 5 Figure 5 Figure 5 Fig. 4(c) and Fig. 4(d) show that the diameter of the conductive ring 122 can be larger than the diameter of the detection electrode 113, in which case, as shown in Fig. 4(c), when the offset of the pot 120 is not large, the two will not be in contact, and thus the average temperature of the pot 120 at this time cannot be measured, but as shown in Fig. 4(d), when the offset between the pot 120 and the heating element 112 is large, the two have two contact points, and thus the position of the support 114 is adjusted according to the position of the contact points, and the resistivity p of the conductive member is calculated according to the resistance of the conductive member at this time, and thus the average temperature of the pot 120 is obtained. Figure 5 Figure 5 Figure 5
[0051] It should be noted that although the present application is described with the heating element 112 aligned with the detection electrode 113, and the conductive ring aligned with the cooking cavity of the pot 120, in actual use, at least one of the detection electrode 113 and the conductive ring 122 can be offset, in which case, when the pot 120 is offset, the detection electrode 113 and the conductive ring 122 can have two contact points, and thus the average temperature of the pot 120 when the pot 120 is aligned with the heating element 112 can be measured.
[0052] The cooking utensil 100 provided in the above scheme, by setting the detection electrode 113 on the panel 111, and setting the conductive ring 122 on the bottom surface 121 of the utensil 120, and the conductive ring 122 is made of a material with temperature-dependent resistivity, so that when the utensil 120 is placed on the heating surface 1111, the conductive ring 122 forms two contact points with different electrode segments 1131 of the detection electrode 113, and when the conductive material contacts different electrode segments 1131, the conductive circuit is formed, thereby triggering the corresponding electrode segment 1131 of the detection electrode 113 to locate the contact point of the conductive ring 122 and the detection electrode 113, and calculate the temperature of the conductive ring 122 according to the resistance of the formed circuit, and then obtain the average temperature of the utensil 120 through the temperature of the conductive ring 122, so as to monitor the temperature of the utensil 120, thereby providing the basis for adjusting the temperature for different cooking needs. Compared with the temperature sensor arranged at any point of the utensil 120, it can better reflect the average temperature of the utensil 120, and avoid the problem of inaccurate detection caused by single-point temperature detection.
[0053] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.
[0054] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the patent protection of the present application should be subject to the appended claims.
Claims
1. A cooking appliance characterized by, The cooking appliance comprises: a heating assembly comprising a panel, the panel comprising a heating surface provided with a detection electrode, the detection electrode being in a ring structure, the detection electrode comprising at least three independently arranged electrode segments; and a pot comprising a bottom surface arranged in a plane, the bottom surface being provided with a conductive ring in a ring structure, the conductive ring being made of a material with a temperature-dependent resistivity, when the pot is placed on the heating surface, the detection electrode and the conductive ring have two contact points, the two contact points being located at different electrode segments.
2. The cooking appliance of claim 1, wherein, The electrode segments are in a dot shape, and a plurality of the electrode segments are continuously distributed along a ring to form the detection electrode.
3. The cooking appliance of claim 1, wherein, The conductive ring comprises a first resistance segment and a second resistance segment, the first resistance segment and the second resistance segment being located on two sides of the two contact points, respectively, in a circuit formed by the conductive ring and the detection electrode, the first resistance segment and the second resistance segment are connected in parallel.
4. The cooking appliance of claim 3, wherein, The cooking appliance further comprises a detection member connected to the conductive ring, for detecting the resistance value of the conductive ring, wherein the resistance value of the conductive ring is the resistance value after the first resistance segment and the second resistance segment are connected in parallel.
5. The cooking appliance of claim 4, wherein, When the positions of the pot and the detection electrode remain unchanged, the resistance value of the conductive ring is positively or negatively correlated with the temperature of the pot.
6. The cooking appliance of claim 1, wherein, The diameter of the conductive ring is equal to the diameter of the detection electrode.
7. The cooking appliance of claim 1, wherein, The conductive ring is a thermistor ring.
8. The cooking appliance of claim 1, wherein, The heating assembly further comprises a heating member located below the panel, the detection electrode is aligned with the heating member, and the detection electrode and the heating member are arranged concentrically.
9. The cooking appliance of claim 8, wherein, The heating assembly further comprises a bracket, the heating member is connected to the bracket, and the bracket is movably arranged relative to the panel in a direction parallel to the heating surface, and there is a set position in the movement path of the heating member, which is aligned with the detection electrode.
10. The cooking appliance of claim 9, wherein, The bracket can be moved in at least two directions arranged at an angle.