A pot body material detection device and a smart kitchen appliance

Abstract

This utility model relates to the field of intelligent kitchen appliance technology, and in particular to a pot body material detection device and an intelligent kitchen appliance. The pot body material detection device includes a conductive shell, an inductive elastic element, a fixing element, an insulating element, a conductive elastic component, and a control unit. The conductive shell is a cylindrical structure with an opening. An inductive elastic element is disposed inside the conductive shell. One end of the inductive elastic element is fixedly connected to the top of the conductive shell, and the other end is fixedly connected to the insulating element. The inductive elastic element is capable of telescoping along a first direction, which is the length extension direction of the fixing element. The insulating element is located at the opening of the conductive shell. The end of the fixing element is connected to the insulating element, and the peripheral surface of the fixing element is provided with a conductive elastic component. The control unit is electrically connected to both the fixing element and the inductive elastic element. The pot body material detection device provided by this utility model has the characteristics of simple structure and high detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of intelligent kitchen appliance technology, and in particular to a pot body material detection device and an intelligent kitchen appliance. Background Technology

[0002] With the continuous updates to smart kitchen appliances, related personnel are paying increasing attention to their technological development, and users are becoming increasingly reliant on them. For example, in the area of ​​anti-dry-burning, when a gas stove pot is in a dry-burning state, it is easily damaged and may even cause a fire. This makes anti-dry-burning detection a necessary measure. However, existing detection devices typically use internal temperature sensors to detect dry burning. Specifically, the temperature sensor contacts the bottom of the pot to detect its temperature and sets a threshold temperature to determine if dry burning has occurred. However, the threshold temperature for determining dry burning varies depending on the pot's material. Therefore, to more accurately determine if a pot is dry, precise detection of the pot's material is required. Existing pot material detection devices either lack a structure for detecting the pot's material or rely on capacitor modules. Capacitor modules have poor anti-interference capabilities, resulting in poor detection accuracy and reliability when applied to harsh environments like kitchens.

[0003] For example, in the field of smart cooking, current methods typically cook ingredients directly based on the acquired recipe, without considering other influencing factors. However, since there are many ways to cook ingredients, and different cookware materials require different cooking parameters—for instance, stainless steel and ceramic cookware have different thermal conductivity—using the same cooking parameters will affect the final cooking result. Therefore, to achieve high-quality cooking, different cooking parameters need to be used for different cookware materials, requiring precise detection of the cookware material before cooking. However, existing methods for detecting cookware material suffer from poor accuracy and reliability. Therefore, providing a device that can accurately detect cookware material has become a pressing technical problem to be solved. Summary of the Invention

[0004] To address the problems of the existing technology, on the one hand, a pot body material detection device is provided, which includes at least a conductive shell, an inductive elastic element, a fixing element, an insulating element, a conductive elastic component, and a control unit;

[0005] The conductive housing is a cylindrical structure with an opening; the inductive elastic element is disposed inside the conductive housing;

[0006] One end of the inductive elastic element is fixedly connected to the top of the conductive housing, and the other end of the inductive elastic element is fixedly connected to the insulating element; the inductive elastic element is capable of telescopic movement along a first direction; the first direction is the length extension direction of the fixed element;

[0007] The insulating element is disposed at the opening of the conductive housing;

[0008] The end of the fixing member is connected to the insulating member, and the peripheral surface of the fixing member is provided with the conductive elastic component;

[0009] The control unit is electrically connected to the fixing member and the inductive elastic member respectively.

[0010] In one feasible implementation, when the pot is placed on the conductive housing, the conductive housing can move along the first direction to bring the conductive housing into contact with the conductive elastic component;

[0011] When the pot is not placed on the conductive housing, the conductive housing is not connected to the fixing member, and the conductive elastic component is at a preset distance from the conductive housing along the first direction.

[0012] In one feasible implementation, it also includes a measuring pot lead-out wire and an excitation lead-in wire;

[0013] Both the insulating component and the fixing component are cylindrical structures;

[0014] One end of the excitation lead wire is connected to the inductive elastic element, and the other end of the excitation lead wire can pass through the insulating element and the fixing element in sequence and be connected to the control unit;

[0015] One end of the measuring pot lead wire is connected to the fixing member, and the other end of the measuring pot lead wire is connected to the control unit.

[0016] In one feasible implementation, the outer diameter of the insulating member and the outer diameter of the fixing member are both smaller than the inner diameter of the conductive housing;

[0017] When the pot is placed on the conductive housing, the conductive housing can move along the first direction so that one end of the fixing member, the insulating member and the conductive elastic component extend into the conductive housing, and the conductive elastic component contacts the inner wall of the conductive housing.

[0018] In one feasible implementation, the top of the insulating member is connected to the inductive elastic member, and the bottom of the insulating member is connected to the fixing member;

[0019] The outer diameter of the fastener is less than or equal to the outer diameter of the insulator.

[0020] In one feasible implementation, the insulating element includes a first insulating portion and a second insulating portion connected together;

[0021] The outer diameter of the first insulating part is larger than the outer diameter of the second insulating part;

[0022] The top of the first insulating part is connected to the inductive elastic element, and the bottom of the first insulating part is connected to the fixing element;

[0023] The second insulating part extends into the fixing member; the outer diameter of the fixing member is smaller than the outer diameter of the first insulating part.

[0024] In one feasible implementation, the conductive elastic component includes N elastic elements; where N is an integer greater than or equal to 2.

[0025] Among the N elastic elements, at least M are conductive elastic elements; M is an integer greater than or equal to 1 and less than or equal to N.

[0026] In one feasible implementation, the inductive elastic element includes a spring.

[0027] In one feasible implementation, the pot body material detection device further includes a temperature sensor;

[0028] The temperature sensor is disposed inside the conductive housing;

[0029] The temperature sensor is electrically connected to the control unit; the temperature sensor is used to detect the temperature of the bottom of the cookware.

[0030] In one feasible implementation, the pot body material detection device further includes a temperature measuring lead wire;

[0031] One end of the temperature sensing lead is connected to the temperature sensor, and the other end of the temperature sensing lead can pass through the inductive elastic element, the insulating element and the fixing element in sequence to connect to the control unit.

[0032] In one feasible implementation, a protective sleeve is also included;

[0033] The protective sleeve has a cylindrical structure;

[0034] The protective sleeve is fitted onto the temperature measuring lead-out line.

[0035] On the other hand, this application also provides a smart kitchen appliance, which is a gas stove; the gas stove is equipped with a pot body material detection device.

[0036] The pot material detection device provided in this application includes a conductive shell, an inductive elastic element, a temperature sensor, a fixing element, an insulating element, a conductive elastic component, and a control unit. The conductive shell is a cylindrical structure with an opening. The inductive elastic element is disposed inside the conductive shell. One end of the inductive elastic element is fixedly connected to the top of the conductive shell, and the other end of the inductive elastic element is fixedly connected to the insulating element. The inductive elastic element is capable of telescoping along a first direction. The first direction is the length extension direction of the fixing element. The insulating element is disposed at the opening of the conductive shell. The end of the fixing element is connected to the insulating element, and the conductive elastic component is disposed on the circumferential surface of the fixing element. The control unit is electrically connected to the fixing element and the inductive elastic element respectively. Therefore, when the pot is placed on the conductive shell, the conductive shell moves downward relative to the fixed part, causing the conductive elastic component to come into contact with the conductive shell. This results in the pot, conductive shell, inductive elastic component, fixed part, and control unit forming an RLC circuit. Since the inductance values ​​of the inductive elastic component are different for different pot materials, different pot materials can be distinguished. The entire detection structure has the advantages of simple structure and high detection accuracy. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of a pot body material detection device exemplified in this application;

[0039] Figure 2 This is an example application scenario diagram of a pot body material detection device of this application;

[0040] Figure 3 yes Figure 2 A schematic diagram of the structure of an exemplary pot body material detection device;

[0041] Figure 4 This is an equivalent circuit diagram of a pot body material detection device exemplified in this application.

[0042] The following is supplementary explanation of the attached figures:

[0043] 1-Conductive housing; 2-Inductive elastic element; 3-Fixing element; 4-Insulating element; 5-Conductive elastic component; 501-Elastic element; 6-Control unit; 7-Excitation lead wire; 8-Pot measuring lead wire; 9-Temperature measuring lead wire; 10-Pot body; 11-Protective sleeve; 12-Pot body support; 13-Burning head; 14-Temperature sensor. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0045] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0046] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a pot body material detection device exemplified in this application; Figure 2 This is an example application scenario diagram of a pot body material detection device according to this application. The pot body material detection device includes at least a conductive housing 1, an inductive elastic element 2, a fixing element 3, an insulating element 4, a conductive elastic component 5, and a control unit 6. The conductive housing 1 is a cylindrical structure with an opening. The inductive elastic element 2 is disposed inside the conductive housing 1. One end of the inductive elastic element 2 is fixedly connected to the top of the conductive housing 1, and the other end of the inductive elastic element 2 is fixedly connected to the insulating element 4. The inductive elastic element 2 is capable of telescoping along a first direction. The first direction is the length extension direction of the fixing element 3. The insulating element 4 is disposed at the opening of the conductive housing 1. The end of the fixing element 3 is connected to the insulating element 4, and the conductive elastic component 5 is disposed on the circumferential surface of the fixing element 3. The control unit 6 is electrically connected to the fixing element 3 and the inductive elastic element 2 respectively.

[0047] In this embodiment, the conductive housing 1 can move downward relative to the fixing member 3, causing the conductive elastic component 5 to contact the conductive housing 1. This allows the pot body 10, the conductive housing 1, the inductive elastic component 2, the fixing member 3, and the control unit 6 to form an RLC circuit. Since the inductance values ​​of the inductive elastic component 2 are different for different pot body 10 materials, different pot body 10 materials can be distinguished. This allows the determination of the dry-burning temperature threshold corresponding to different pot body 10 materials. This solution distinguishes different pot body 10 materials based on the inductance of the inductive component, which has the characteristics of good anti-interference and high detection accuracy and reliability.

[0048] In one feasible implementation, when the pot body 10 is placed on the conductive housing 1, the conductive housing 1 can move along the first direction to contact the conductive elastic component 5; when the pot body 10 is not placed on the conductive housing 1, the conductive housing 1 is not conductive with the fixing member 3, and the conductive elastic component 5 and the conductive housing 1 are at a preset distance along the first direction. That is, when an object is placed on the conductive housing 1, the conductive housing 1 can contact the conductive elastic component 5; when no object is placed, the conductive housing 1 and the conductive elastic component 5 are not in contact, thus making the conductive housing 1 and the fixing member 3 not conductive. Since placing the pot body 10 can form an RLC conducting circuit, and not placing the pot body 10 can not form an RLC circuit, the inductance value of the inductive elastic component 2 is different. Therefore, not only can the detection of different pot body 10 materials be realized, but the presence or absence of a pot can also be determined by this difference in inductance value.

[0049] In this embodiment, the pot body 10 can be made of three materials: metal pot body 10 (with certain conductivity), non-metal pot body 10 (such as ceramic pot), and metal pot body 10 with a thick coating (such as enamel pot).

[0050] Please continue reading. Figure 2 The pot body material detection device provided in this application can be specifically applied to the middle of the burner head 13, with its top protruding from the burner head 13 to contact the pot body 10. A pot body support 12 is arranged around the outer ring of the burner head 13 for placing the pot body 10. Optionally, the end of the fixing member 3 away from the pot body 10 can be fixedly connected to the limiting structure to ensure the stability of the entire device.

[0051] In one feasible implementation, please refer to Figure 3 , as shown Figure 3 yes Figure 2A schematic diagram of an exemplary pot body material detection device is provided. The pot body material detection device also includes a temperature sensor 14; the temperature sensor 14 is disposed within the conductive housing 1; the temperature sensor 14 is electrically connected to the control unit 6; the temperature sensor 14 is used to detect the temperature of the bottom of the pot. Therefore, this pot body material detection device can be applied to anti-dry-burning detection scenarios. Through the setting of the temperature sensor 14, the temperature of the pot body 10 can be detected. Based on the different dry-burning temperature thresholds corresponding to different pot body materials 10, it is possible to accurately determine whether the pot body 10 is in a dry-burning state. If it is in a dry-burning state, an alarm can be triggered in time or the gas can be shut off, thus preventing dry-burning and improving user cooking safety.

[0052] In one feasible embodiment, the pot material detection device further includes a pot testing lead-out wire 8 and an excitation lead-in wire 7; the insulating member 4 and the fixing member 3 are both cylindrical structures; one end of the excitation lead-in wire 7 is connected to the inductive elastic member 2, and the other end of the excitation lead-in wire 7 can pass through the insulating member 4 and the fixing member 3 in sequence and be connected to the control unit 6; one end of the pot testing lead-in wire is connected to the fixing member 3, and the other end of the pot testing lead-out wire 8 is connected to the control unit 6.

[0053] In another feasible embodiment, the pot body material detection device further includes a temperature measuring lead 9; one end of the temperature measuring lead 9 is connected to the temperature sensor 14, and the other end of the temperature measuring lead 9 can pass through the inductive elastic element, the insulating element 4 and the fixing element 3 in sequence and be connected to the control unit 6.

[0054] In one feasible embodiment, the pot body material detection device further includes a protective sleeve 11; the protective sleeve 11 has a cylindrical structure; the protective sleeve 11 is fitted onto the temperature measuring lead-out line. This avoids interference between the temperature measuring lead-out line 9 and the inductive elastic element 2, further ensuring the structural reliability of the pot body material detection device and minimizing impact on the detection results. Optionally, the protective sleeve 11 can be made of insulating material.

[0055] Specifically, the excitation lead-in line 7 is used to connect the inductive elastic element 2 to the excitation I / O port of the control unit 6, and the pot-testing lead-out line 8 is used to connect the fixing element 3 to the control unit 6. The inductive elastic element 2 acts as a hollow inductor, and since the top of the inductive elastic element 2 is connected to the conductive housing 1, the material of the pot body 10 can be detected based on the change in the inductance of the coil near the pot body 10. The excitation I / O port is used to generate a pulse width modulation (PWM) wave.

[0056] In this embodiment, the top of the conductive housing 1 can be closed at the end, with the temperature sensor 14 attached thereon, or it can be a top with a through hole in the middle to expose the temperature sensor 14 and improve detection accuracy.

[0057] In this embodiment, the inductive elastic element 2 can specifically be a cylindrical structure, allowing the temperature sensor 14 to be placed in its central part. Optionally, the inductive elastic element 2 can also be a cylindrical structure formed by two or more elastic conductive elements arranged along the inner ring of the conductive housing 1, but a predetermined gap exists between the sidewall of the inductive elastic element 2 and the sidewall of the conductive housing 1 to avoid affecting the vertical movement of the inductive elastic element 2. Optionally, the conductive element can also be a cylindrical spring or other cylindrical retractable component. No specific limitations are imposed here, as long as the placement of the temperature sensor 14 is achieved, and it possesses retractability and conductivity.

[0058] In this embodiment, the conductive shell 1, the inductive elastic element 2, and the conductive elastic component 5 can all be made of conductive metal, while the insulating element 4 is made of insulating material, such as ceramic or polymer. The insulating element 4 is used to isolate the conductivity between the inductive elastic element 2, the conductive shell 1, and the fixing element 3, so that when the pot 10 is not placed on the conductive component, the conductive shell 1 and the fixing component are not conductive, thereby allowing determination of whether the pot 10 is placed on the conductive component.

[0059] In one feasible implementation, the outer diameters of the insulating member 4 and the fixing member 3 are both smaller than the inner diameter of the conductive housing 1. When the pot body 10 is placed on the conductive housing 1, the conductive housing 1 can move along the first direction, so that one end of the fixing member 3, the insulating member 4, and the conductive elastic component 5 extend into the conductive housing 1, and the conductive elastic component 5 contacts the inner wall of the conductive housing 1. The insulating member 4 ensures that the conductive housing 1 and the inductive elastic component 2 do not contact the fixing member 3, thereby improving the reliability of the detection results.

[0060] In one feasible implementation, the top of the insulating member 4 is connected to the inductive elastic member 2, and the bottom of the insulating member 4 is connected to the fixing member 3; the outer diameter of the fixing member 3 is less than or equal to the outer diameter of the insulating member 4, in order to further improve the reliability of the detection results.

[0061] In one feasible embodiment, the insulating member 4 includes a first insulating portion and a second insulating portion connected together; the outer diameter of the first insulating portion is larger than the outer diameter of the second insulating portion; the top of the first insulating portion is connected to the inductive elastic member 2, and the bottom of the first insulating portion is connected to the fixing member 3; the second insulating portion extends into the fixing member 3; the outer diameter of the fixing member 3 is smaller than the outer diameter of the first insulating portion. This results in higher overall structural reliability.

[0062] In one feasible implementation, the conductive elastic component 5 includes N elastic elements 501; where N is an integer greater than or equal to 2; at least M of the N elastic elements 501 are conductive; where M is an integer greater than or equal to 1 and less than or equal to N. By providing multiple spaced elastic elements 501 on the circumferential surface of the fixing member 3, the stability of the overall structure can be ensured. It is sufficient to ensure that at least one elastic element 501 is conductive; the other elastic elements 501 can be non-conductive. This ensures that when the conductive component is pressed down, the conductive elastic elements 501 can contact the conductive housing 1, thereby achieving conductivity between the conductive housing 1 and the fixing member 3. Optionally, these elastic elements 501 can be evenly spaced on the circumferential surface of the fixing member 3. Specifically, these elastic elements 501 are located on the circumferential line of the same cross section of the fixing member 3. For example, when the conductive elastic component 5 includes two elastic elements 501, these two elastic elements 501 can be symmetrically distributed on both sides of the fixing member 3 about its central axis. Optionally, the elastic element 501 can be an arc-shaped elastic sheet or an arc-shaped elastic rod. Specifically, one end of the elastic element 501 is connected to the fixing element 3, and the other end is at a certain distance from the fixing element 3.

[0063] Please see Figure 4 The diagram shows an equivalent circuit diagram of a pot material detection device exemplified in this application. Specifically, it is the equivalent circuit diagram of a pot 10 placed on a conductive housing 1. When no pot 10 is placed on the conductive housing 1, the switch S is in the open state. IO1 represents the port connected to the control unit 6 via the excitation lead-in line 7; IO2 represents the port connected to the control unit 6 via the pot detection lead-out line 8; R1 and R3 represent current-limiting resistors at different circuit locations on the circuit board; R2 represents the equivalent resistance of the inductive elastic element (typically 1-10 ohms); L represents the equivalent inductance of the inductive elastic element 2; C1 represents the parallel parasitic capacitance of the inductive elastic element 2 (very small and negligible); C2 represents the equivalent parasitic capacitance between the pot material detection device and the pot 10. Therefore, the entire circuit can constitute an RLC series circuit; IO1 is used to generate a high-frequency PWM wave; IO2 is used to detect the voltage Uc of the capacitor C in the RLC circuit, which is a PWM wave with amplitude variation and the same excitation frequency. Since C1 can be ignored, Uc can represent the voltage drop across C2.

[0064] When a pot body 10 is placed on the pot body material detection device, the conductive housing 1 is pressed down, so that the conductive elastic component 5 is connected to the conductive housing 1. The fixing component 3 is connected to the control unit 6 through the pot test lead wire 8. Thus, a PWM wave with the same excitation frequency can be detected. If the pot body 10 is not placed, a constant value non-PWM wave is detected, which can be used as a basis for determining whether the pot body 10 is placed.

[0065] When the pot body 10 is made of metal, the effective inductance L of the inductor 2 increases significantly due to its contact with the inductor 2. As a result, the voltage Uc in the RLC circuit changes significantly due to this change in inductance. When the pot body 10 is made of non-metal, L hardly changes, and Uc changes very little. Therefore, the material of the pot body 10 can be determined based on the magnitude of Uc. Specifically, Uc can be determined according to the following disclosure:

[0066]

[0067] Wherein, U0 is the PWM voltage signal emitted by the IC of control unit 6, which is generally an AC signal with an amplitude equal to the working voltage VDD of control unit 6 (specifically, a microcontroller) and a duty cycle of 50%. The microcontroller's detection port also receives an AC signal after impedance voltage division, and the microcontroller detects the amplitude of the AC signal after impedance voltage division; Uc output has the same frequency as U0; f represents the frequency of the excitation signal; R represents the total resistance in the RLC circuit, which may include R1, R2, R3 and the resistance on the traces.

[0068] It should be noted that the pot body material detection device provided in this application is not limited to the field of anti-dry burning detection, but can also be applied to fields such as intelligent cooking, thereby improving the accuracy and reliability of the final function realization based on the accurate judgment of the pot body material.

[0069] On the other hand, this application embodiment also provides a smart kitchen appliance, which is a gas stove; the gas stove is equipped with the pot body material detection device.

[0070] In the embodiments of this application, please refer to Figure 2 The pot material detection device can be specifically installed in the burner head 13 of the smart gas stove. The smart gas stove is equipped with a smart voice control module, which includes a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the gas stove and the pot material detection device to perform corresponding operations, thereby realizing the intelligent control of the gas stove and the pot material detection device and improving the user's experience of using smart appliances.

[0071] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for detecting the material of a pot body, characterized in that, It includes at least a conductive housing, an inductive elastic element, a fixing element, an insulating element, a conductive elastic assembly, and a control unit; The conductive housing is a cylindrical structure with an opening; the inductive elastic element is disposed inside the conductive housing; One end of the inductive elastic element is fixedly connected to the top of the conductive housing, and the other end of the inductive elastic element is fixedly connected to the insulating element; the inductive elastic element is capable of telescopic movement along a first direction; the first direction is the length extension direction of the fixed element; The insulating element is disposed at the opening of the conductive housing; The end of the fixing member is connected to the insulating member, and the peripheral surface of the fixing member is provided with the conductive elastic component; The control unit is electrically connected to both the fixing member and the inductive elastic member.

2. The pot material detection device according to claim 1, characterized by When the pot is placed on the conductive housing, the conductive housing can move along the first direction to make the conductive housing contact the conductive elastic component; When the pot is not placed on the conductive housing, the conductive housing is not connected to the fixing member, and the conductive elastic component is at a preset distance from the conductive housing along the first direction.

3. The pot material detection device according to claim 2, characterized by It also includes the measuring pot lead wire and the excitation lead wire; Both the insulating component and the fixing component are cylindrical structures; One end of the excitation lead wire is connected to the inductive elastic element, and the other end of the excitation lead wire can pass through the insulating element and the fixing element in sequence and be connected to the control unit; One end of the measuring pot lead wire is connected to the fixing component, and the other end of the measuring pot lead wire is connected to the control unit.

4. The pot material detection device according to claim 3, characterized by The outer diameter of the insulating component and the outer diameter of the fixing component are both smaller than the inner diameter of the conductive shell; When the pot is placed on the conductive housing, the conductive housing can move along the first direction so that one end of the fixing member, the insulating member and the conductive elastic component extend into the conductive housing, and the conductive elastic component contacts the inner wall of the conductive housing.

5. The pot material detection device according to claim 3, wherein The top of the insulating component is connected to the inductive elastic component, and the bottom of the insulating component is connected to the fixing component; The outer diameter of the fastener is less than or equal to the outer diameter of the insulator.

6. The pot material detection device according to claim 5, wherein The insulating component includes a first insulating part and a second insulating part that are connected. The outer diameter of the first insulating part is larger than the outer diameter of the second insulating part; The top of the first insulating part is connected to the inductive elastic element, and the bottom of the first insulating part is connected to the fixing element; The second insulating part extends into the fixing member; the outer diameter of the fixing member is smaller than the outer diameter of the first insulating part.

7. The pot material detection device according to claim 1, characterized by The conductive elastic component comprises N elastic elements; where N is an integer greater than or equal to 2. Among the N elastic elements, at least M are conductive elastic elements; M is an integer greater than or equal to 1 and less than or equal to N.

8. The pot material detection device according to any one of claims 1 to 7, characterized by The inductive elastic element includes a spring.

9. The pot material detection device according to any one of claims 1 to 7, characterized by The pot body material detection device also includes a temperature sensor; The temperature sensor is disposed inside the conductive housing; The temperature sensor is electrically connected to the control unit; the temperature sensor is used to detect the temperature of the bottom of the cookware.

10. The pot material detection device according to claim 9, wherein It also includes temperature sensing leads; One end of the temperature sensing lead is connected to the temperature sensor, and the other end of the temperature sensing lead can pass through the inductive elastic element, the insulating element and the fixing element in sequence to connect to the control unit.

11. The pot material detection device according to claim 10, wherein It also includes a protective case; The protective sleeve has a cylindrical structure; The protective sleeve is fitted onto the temperature measuring lead-out line.

12. An intelligent kitchen electrical appliance, characterized in that, The smart kitchen appliance is a gas stove; the gas stove is equipped with a pot body material detection device as described in any one of claims 1-11.

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