Electric stewpot

By setting temperature measuring elements and electrodes in the electric cooker, combining temperature and on-off state to determine the overflow risk, the problem of misdirection of residual ingredients in the electrode is solved, achieving a more accurate overflow risk judgment and a better user experience.

CN223208191UActive Publication Date: 2025-08-12HONGYANG HOME APPLIANCES
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202422333335.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-24
Publication Date
2025-08-12
Estimated Expiration
2034-09-24

AI Technical Summary

Technical Problem

Existing electric cookers are prone to misjudgment when judging the risk of overflow, resulting in a decline in user experience. The main reason is that the residual ingredients of the electrode are turned on and causing the control device to act erroneously.

Method used

Two through holes are penetrated at the same side wall portion of the ceramic container, and electrodes are installed and temperature measuring elements are equipped. The control device controls the heating device according to the temperature detected by the temperature measuring element and electrode state to ensure accuracy of judgment.

Benefits of technology

It improves the accuracy of judging spillover risks, improves user experience, is compact in structure and is easy to clean, and reduces the difficulty of electrode assembly and the probability of misleading.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223208191U_ABST
    Figure CN223208191U_ABST
Patent Text Reader

Abstract

The utility model discloses an electric stewpot which comprises a ceramic container with a containing cavity, a heating device for heating the ceramic container and a control device electrically connected with the heating device, and two through holes with the distance not smaller than 25 mm are formed in the same side wall of the ceramic container in a spaced and penetrating mode. The two through holes are respectively provided with two electrodes electrically connected with the control device, at least one electrode is provided with a temperature measuring element used for detecting the temperature in the containing cavity, and the temperature measuring element is electrically connected with the control device. The control device controls the heating state of the heating device according to the temperature detected by the temperature measuring element and the on-off state of the two electrodes. According to the electric stewpot, the accuracy of judging whether the overflow risk exists or not can be improved, and then the use experience of a user is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to an electric stew pot. [Background Technology]

[0002] A conventional electric stew pot includes an inner pot with a cavity, a heating device for heating the inner pot, and a control device electrically connected to the heating device. To prevent overflow, two electrodes electrically connected to the control device are installed at intervals on the wall of the inner pot. The two electrodes are located near the upper side of the inner pot wall. When the liquid in the cavity boils and forms steam and foam, the foam rises and conducts electricity between the two electrodes. At this point, the two electrodes conduct electricity and send a conduction signal to the control device. Based on the conduction signal, the control device controls the heating device to stop heating or reduce the heating power, thereby dissipating the foam in the cavity and preventing it from overflowing. However, in actual use, if the user does not clean the pot properly and some food remains between the two electrodes, the two electrodes will conduct electricity through the remaining food. In this case, the control device cannot control the heating device to heat the inner pot at high power or even at all, which means that the liquid in the inner pot cannot boil. Therefore, the technical solution of determining whether there is a risk of overflow based solely on the conduction between the two electrodes is prone to misjudgment, thereby reducing the user experience. [Utility Model Content]

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the existing technology and provide an electric stew pot, which can improve the accuracy of judging whether there is an overflow risk, thereby improving the user experience.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] An electric stew pot includes a ceramic container having a cavity, a heating device for heating the ceramic container, and a control device electrically connected to the heating device. Two through holes with a spacing of not less than 25 mm are penetrated through the same side wall of the ceramic container. Two electrodes electrically connected to the control device are respectively installed in the two through holes. At least one of the electrodes is installed with a temperature measuring element for detecting the temperature in the cavity. The temperature measuring element is electrically connected to the control device. The control device controls the heating state of the heating device according to the temperature detected by the temperature measuring element and the on-off state of the two electrodes.

[0006] In the above electric stew pot, an assembly cavity is provided inside the electrode, and the temperature measuring element is installed in the assembly cavity.

[0007] In the above electric stew pot, the temperature measuring element is one of a thermocouple, a thermal resistor and a thermistor.

[0008] In the above electric stew pot, the electrode includes a head and a rod, the rod passes through the through hole, the head is defined in the cavity to form a detection end, and the portion of the rod located outside the ceramic container is connected to the nut.

[0009] In the above electric stew pot, the wall of the ceramic container is further provided with an insulating seal, which seals the assembly gap between the electrode and the wall of the ceramic container and isolates the electrode from the wall of the ceramic container.

[0010] In the above-mentioned electric stew pot, the insulating seal includes a first sealing portion arranged around the through hole and a second sealing portion sleeved on the outside of the rod portion. The first sealing portion is clamped and fixed between the head and the inner wall of the ceramic container, and the second sealing portion is clamped and fixed between the rod portion and the hole wall of the through hole.

[0011] In the above electric stew pot, the two electrodes are circumferentially spaced apart and arranged at the same height; or the two electrodes are vertically spaced apart.

[0012] In the above electric stew pot, the distance between the two electrodes is less than 35 mm.

[0013] In the above-mentioned electric stew pot, the electric stew pot also includes a shell and a conductive member. The heating device, the control device and the conductive member are all installed on the shell. The conductive member is electrically connected to the control device. The ceramic container is placed in the shell in a removable manner. When the ceramic container is placed in the shell, the two electrodes and the temperature measuring element are all connected to the conductive member.

[0014] In the above-mentioned electric stew pot, an upper coupler is installed on the outside of the ceramic container, the two electrodes and the temperature measuring element are electrically connected to the upper coupler, and the conductive member is a lower coupler. When the ceramic container is placed in the shell, the upper coupler and the lower coupler are plugged in and coupled to be energized.

[0015] Beneficial effects of the utility model:

[0016] 1. In the present invention, two through holes are formed on the same side wall of the ceramic container with a spacing of not less than 25 mm. Two electrodes electrically connected to the control device are respectively installed in the two through holes. At least one of the electrodes is installed with a temperature measuring element for detecting the temperature in the cavity. The temperature measuring element is electrically connected to the control device. The control device controls the heating state of the heating device according to the temperature detected by the temperature measuring element and the on-off state of the two electrodes. Such a design can reduce the probability of misleading conduction by food residue on the wall of the ceramic container due to the small distance between the two electrodes and reduce the difficulty of assembling the two electrodes. In addition, when the temperature detected by the temperature measuring element reaches the set temperature threshold and the two electrodes are in the conductive state, it means that the liquid in the ceramic container is boiled and foam is generated and reaches the electrodes, and there is a risk of overflow. At this time, the control device controls the heating device to stop heating or reduce the heating power of the heating device to make the foam disappear. When the temperature detected by the temperature measuring element reaches the set temperature threshold and the two electrodes are in the disconnected state or the temperature detected by the temperature measuring element does not reach the set temperature threshold, and the two electrodes are in the conductive state, it means that no foam is generated in the ceramic container or the foam in the cavity is lower than the two electrodes, and there is no risk of overflow. At this time, the control device controls the heating device to stop heating or reduce the heating power of the heating device to make the foam disappear. The control device controls the heating device to be at normal heating power, thereby improving the accuracy of judging whether there is an overflow risk, thereby improving the user experience; in addition, in actual use, due to the effect of water vapor, when the temperature measured by the temperature measuring element reaches the set temperature threshold, the foam has not yet risen to a position that can conduct the two electrodes. At this time, the heating power of the heating device can be first reduced by the control device to slowly increase the temperature in the cavity to heat the food. When the foam rises to the point of conducting the two electrodes, the control device controls the heating device to stop heating to prevent overflow; finally, arranging the temperature measuring element on at least one of the electrodes not only makes the structure more compact, but also makes the overflow prevention data all come from the same position, so that the temperature data and the on-off signal obtained at the same position are more correlated, thereby improving the judgment accuracy.

[0017] 2. An assembly cavity is provided inside the electrode, and the temperature measuring element is installed in the assembly cavity. This design allows the heat in the cavity to be transferred to the temperature measuring element through the electrode, enabling the temperature measuring element to measure temperature. In addition, the electrode can also provide waterproof protection for the temperature measuring element to ensure normal use of the temperature measuring element. Finally, it can also make the overall structure more compact.

[0018] 3. The electrode consists of a head and a stem. The stem extends through the through-hole, with the head confined within the cavity to form the detection end. The stem, located outside the ceramic container, is connected to the nut. This design allows the ceramic container wall to be confined between the head and the nut, thereby securing the electrode and simplifying assembly and disassembly.

[0019] 4. The ceramic container wall is also equipped with an insulating seal, which seals the assembly gap between the electrode and the ceramic container wall and isolates the electrode from the ceramic container wall. This design prevents moisture in the cavity from leaking out of the ceramic container through the assembly gap and prevents the head from hard contact with the ceramic container wall, which could cause cracks in the ceramic container wall.

[0020] 5. The insulating seal comprises a first sealing portion surrounding the through-hole and a second sealing portion sleeved around the outside of the stem. The first sealing portion is clamped and fixed between the head and the inner wall of the ceramic container, while the second sealing portion is clamped and fixed between the stem and the wall of the through-hole. This design improves the insulating seal's sealing performance and its effectiveness in isolating the ceramic container wall from the electrode.

[0021] 6. The distance between the two electrodes is less than 35mm. This design can avoid the problem of the foam not being able to smoothly conduct the two electrodes due to the large distance between the two electrodes, thereby improving the accuracy of the detection.

[0022] 7. The electric stew pot further includes a housing and a conductive member. The heating device, control device, and conductive member are all mounted on the housing. The conductive member is electrically connected to the control device. The ceramic container is removably placed within the housing. When the ceramic container is placed within the housing, the two electrodes and the temperature measuring element are connected to the conductive member. This design allows the ceramic container to be individually processed and formed, which is particularly advantageous for the processing and forming of the ceramic container. In addition, the ceramic container can be removed and cleaned separately, thereby reducing the difficulty of cleaning the ceramic container.

[0023] 8. An upper coupler is installed on the outside of the ceramic container. The two electrodes and the temperature measuring element are electrically connected to the upper coupler. The conductive member is the lower coupler. When the ceramic container is placed in the shell, the upper and lower couplers are plugged in and coupled, and power is applied. This design ensures the reliability of the electrical connection between the electrodes, temperature measuring element, and control device.

[0024] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] Figure 1 This is a cross-sectional view of a partial structure of an electric stew pot in Example 1 of the present utility model;

[0027] Figure 2 for Figure 1 A top view of

[0028] Figure 3 for Figure 2 A partial enlarged schematic diagram of the middle A.

[0029] Reference numerals:

[0030] 001, cavity; 100, shell; 110, lower mounting seat; 200, ceramic container; 210, upper mounting seat; 300, heating device; 400, control device; 500, electrode; 510, rod; 520, head; 600, temperature measuring element; 700, nut; 800, insulating seal; 810, first sealing part; 820, second sealing part; 900, upper coupler; 1000, lower coupler. [Specific implementation method]

[0031] The utility model provides an electric stew pot, comprising a ceramic container with a cavity, a heating device for heating the ceramic container, and a control device electrically connected to the heating device, wherein two through holes with a spacing of not less than 25 mm are penetrated through the same side wall portion of the ceramic container, the two through holes are respectively installed with two electrodes electrically connected to the control device, at least one of the electrodes is installed with a temperature measuring element for detecting the temperature in the cavity, the temperature measuring element is electrically connected to the control device, and the control device controls the heating state of the heating device according to the temperature detected by the temperature measuring element and the on-off state of the two electrodes. Such a design can reduce the probability of misleading conduction by food residue on the wall of the ceramic container due to the small distance between the two electrodes and reduce the difficulty of assembling the two electrodes. In addition, when the temperature detected by the temperature measuring element reaches the set temperature threshold and the two electrodes are in the conductive state, it means that the liquid in the ceramic container is boiled and foam is generated and reaches the electrodes, and there is a risk of overflow. At this time, the control device controls the heating device to stop heating or reduce the heating power of the heating device to make the foam disappear. When the temperature detected by the temperature measuring element reaches the set temperature threshold and the two electrodes are in the disconnected state or the temperature detected by the temperature measuring element does not reach the set temperature threshold, and the two electrodes are in the conductive state, it means that no foam is generated in the ceramic container or the foam in the cavity is lower than the two electrodes, and there is no risk of overflow. At this time, the control device controls the heating device to stop heating or reduce the heating power of the heating device to make the foam disappear. The control device controls the heating device to be at normal heating power, thereby improving the accuracy of judging whether there is an overflow risk, thereby improving the user experience; in addition, in actual use, due to the effect of water vapor, when the temperature measured by the temperature measuring element reaches the set temperature threshold, the foam has not yet risen to a position that can conduct the two electrodes. At this time, the heating power of the heating device can be first reduced by the control device to slowly increase the temperature in the cavity to heat the food. When the foam rises to the point of conducting the two electrodes, the control device controls the heating device to stop heating to prevent overflow; finally, arranging the temperature measuring element on at least one of the electrodes not only makes the structure more compact, but also makes the overflow prevention data all come from the same position, so that the temperature data and the on-off signal obtained at the same position are more correlated, thereby improving the judgment accuracy.

[0032] The technical solutions of the embodiments of the present invention are explained and illustrated below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without making creative work all fall within the scope of protection of the present invention. In addition, it should be understood that the following words indicating orientation or positional relationship such as "up", "down", "left", "right", "longitudinal", "lateral", "inside", "outside", "vertical", "horizontal", "top", "bottom", etc. are only based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Example 1

[0034] like Figures 1 to 3As shown, the electric stew pot in this embodiment includes a shell 100, a ceramic container 200, a heating device 300 and a control device 400, wherein the shell 100 is surrounded by a accommodating cavity with an open upper end, the ceramic container 200 has a accommodating cavity 001 for holding food, the ceramic container 200 is placed in the accommodating cavity, the heating device 300 is installed on the bottom wall of the accommodating cavity to heat the ceramic container 200, the heating device 300 is an electric heating tube, the control device 400 is a main control board, the control device 400 is installed on the shell 100 and is electrically connected to the heating device 300 to control the heating power and start and stop of the heating device 300, and the same side wall of the ceramic container 200 is spaced apart by two through holes with a spacing L of not less than 25 mm, L is the circumferential distance between the two through holes, when the distance L between the two electrodes 500 is less than 25 mm, it is difficult for the user to clean the food between the two electrodes 500 and it is easy to cause food to remain on the two electrodes. The electrodes 500 are spaced apart by a plurality of holes, each of which is spaced apart by two opposite ends of the ceramic container 200. The electrodes 500 are spaced apart by a plurality of holes, each of which is spaced apart by two opposite ends of the ceramic container 200. The electrodes 500 are spaced apart by two ... opposite ends of the ceramic container 200. The electrodes 500 are spaceThat is, when the temperature detected by the temperature measuring element 600 reaches the set temperature threshold and the two electrodes 500 are in the on state, it means that the liquid in the ceramic container 200 boils and produces foam that reaches the two electrodes 500, and there is a risk of overflow. At this time, the control device 400 controls the heating device 300 to stop heating or reduce the heating power of the heating device 300 to make the foam disappear. When the temperature detected by the temperature measuring element 600 reaches the set temperature threshold, the two electrodes 500 are in the off state or the temperature detected by the temperature measuring element 600 does not reach the set temperature threshold, and the two electrodes 500 are in the on state, it means that no foam is produced in the ceramic container 200 or the foam in the cavity 001 is lower than the two electrodes 500, and there is no risk of overflow. At this time, the control device 400 will control the heating device 300 to be at normal heating power, thereby improving the risk of overflow. The accuracy of risk judgment is improved, thereby improving the user experience; in addition, during actual use, due to the effect of water vapor, when the temperature detected by the temperature measuring element 600 reaches the preset temperature threshold, the foam has not yet risen to a position that can conduct the two electrodes 500. At this time, the heating power of the heating device 300 can be reduced by the control device 400 to slowly increase the temperature in the cavity 001 to heat the food. When the foam rises to a point that conducts the two electrodes 500, the control device 400 controls the heating device 300 to stop heating to prevent overflow, thereby improving the accuracy of judging whether there is an overflow risk, thereby improving the user experience; finally, arranging the temperature measuring element 600 on one of the electrodes 500 not only makes the structure more compact, but also makes the overflow prevention data all come from the same position, so that the temperature data and the on-off signal obtained at the same position are more correlated, thereby improving the accuracy of judgment.

[0035] Specifically, in this embodiment, one of the electrodes 500 is a hollow rod with an internal assembly cavity. The temperature measuring element 600 is a thermocouple, a thermal resistor, or a thermistor, preferably a thermistor. The temperature measuring element 600 is mounted within the assembly cavity via an interference fit or adhesive bonding. This design allows heat within the cavity 001 to be transferred to the temperature measuring element 600 via the electrode 500, enabling the temperature measuring element 600 to measure temperature. Furthermore, the electrode 500 provides waterproof protection for the temperature measuring element 600, ensuring its proper operation. Finally, the overall structure is more compact.

[0036] In order to fix the electrode 500 on the wall of the ceramic container 200, the electrode 500 in this embodiment includes a rod 510 and a head 520. The outer diameter of the rod 510 is smaller than the aperture of the through hole, while the outer diameter of the head 520 is larger than the aperture of the through hole. The rod 510 can pass through the through hole from the outside to the inside, while the head 520 is confined within the cavity 001 to form a detection end. The portion of the rod 510 located outside the ceramic container 200 is provided with an external thread connected to the nut 700. Such a design allows the side wall of the ceramic container 200 to be confined between the head 520 and the nut 700, which not only achieves the fixation of the electrode 500, but also makes the electrode 500 removable, and the disassembly is simple and convenient.

[0037] Due to the existence of processing errors and installation errors, there will be an assembly gap between the electrode 500 and the side wall of the ceramic container 200. In order to prevent liquid and water vapor from leaking to the outside of the ceramic container 200 through the assembly gap, the wall of the ceramic container 200 in this embodiment is also provided with an insulating seal 800. The insulating seal 800 seals the assembly gap between the electrode 500 and the side wall of the ceramic container 200, and the insulating seal 800 isolates the electrode 500 from the side wall of the ceramic container 200. Such a design can not only prevent water vapor in the cavity 001 from leaking to the outside of the ceramic container through the assembly gap, but also prevent the head 520 from hard contact with the side wall of the ceramic container 200, which may cause the side wall of the ceramic container 200 to rupture. It should be noted that when the ceramic container 200 is a metal part, the ceramic container 200 and the electrode 500 can also be separated by the insulating seal 800 to prevent the two electrodes 500 from being electrically connected through the side wall of the ceramic container 200.

[0038] Preferably, the insulating seal 800 in this embodiment includes an integrally formed first sealing portion 810 and a second sealing portion 820. The first sealing portion 810 is disposed in the cavity 001 and surrounds the through hole. The first sealing portion 810 is clamped and fixed between the head 520 and the inner wall of the ceramic container 200. The second sealing portion 820 is sleeved on the outside of the rod 510 and is clamped and fixed between the rod 510 and the hole wall of the through hole. Such a design can not only improve the sealing performance of the insulating seal 800, but also avoid contact between the head 520 and the inner wall of the ceramic container 200 and avoid contact between the rod 510 and the hole wall of the through hole, thereby improving the isolation effect of the insulating seal 800 on the side wall of the ceramic container 200 and the electrode 500.

[0039] Furthermore, the circumferential distance L between the two electrodes 500 in this embodiment is less than 35 mm. If the distance L between the two electrodes 500 is greater than 35 mm, the foam may not be able to flow smoothly between the two electrodes 500 due to the excessive distance between the two electrodes 500. Therefore, in this embodiment, the distance L between the two electrodes 500 is preferably 30 mm. This design avoids the problem of misdirection of the two electrodes 500 due to residual food on the ceramic container wall and the difficulty of assembling the two electrodes 500, while also avoiding the problem of foam not being able to flow smoothly between the two electrodes 500 due to the excessive distance between the two electrodes 500, thereby improving detection accuracy. Of course, the distance L between the two electrodes 500 may also be, but is not limited to, 25 mm, 27 mm, 28 mm, 32 mm, 35 mm, etc.

[0040] Finally, to facilitate the individual cleaning of the ceramic container 200, the ceramic container 200 in this embodiment is removably placed within the housing 100. To electrically connect the electrode 500 and the temperature measuring element 600 to the control device 400, the housing 100 is further provided with a conductive member electrically connected to the control device 400. When the ceramic container 200 is placed within the housing 100, both electrodes 500 and the temperature measuring element 600 are connected to the conductive member. This design allows the ceramic container 200 to be individually processed and formed. Furthermore, the ceramic container 200 can be individually removed and cleaned, reducing the difficulty of cleaning the ceramic container 200.

[0041] Specifically, an upper mounting seat 210 and an upper coupler 900 provided in the upper mounting seat 210 are also installed on the outside of the ceramic container 200. The two electrodes 500 and the temperature measuring element 600 are electrically connected to the upper coupler 900 through wires, wherein the rod 510 of the electrode 500 passes through the wall of the upper mounting seat 210 and extends into the upper mounting seat 210, and the nut 700 is located in the upper mounting seat 210 and is threadedly connected to the rod 510. A lower mounting seat 110 and a conductive member provided in the lower mounting seat 110 are installed on the shell 100. The conductive member is a lower coupler 1000. The lower coupler 1000 is electrically connected to the control device 400 through a wire. When the ceramic container 200 is placed in the accommodating cavity of the shell 100, the upper coupler 900 and the lower coupler 1000 are plugged in and coupled and energized, so that the two electrodes 500 and the temperature measuring element 600 are connected to the lower coupler 1000. Such a design can ensure the reliability of the electrical connection between the electrode 500 , the temperature measuring element 600 and the control device 400 .

[0042] It is understandable that in other embodiments of the present invention, the ceramic container is fixedly installed in the shell. In this case, the upper coupler and the lower coupler can be omitted, so that the two electrodes and the temperature measuring element are directly electrically connected to the control device through wires.

[0043] It can be understood that in other embodiments of the present invention, an insulating sleeve is provided on the outer side of the electrode, and the part of the insulating sleeve located in the ceramic container is provided with a positioning flange, the outer diameter of the positioning flange is larger than the aperture of the through hole, and the part of the electrode located outside the ceramic container is provided with an internal thread, the screw passes through the gasket and is connected to the internal thread, and an insulating washer is provided on the outside of the insulating sleeve, and the insulating washer is clamped between the outer side of the ceramic container and the gasket. Such a design can also achieve the fixation of the electrode, and prevent water vapor in the cavity from leaking to the outside of the ceramic container through the assembly gap, and can also avoid the electrode from contacting the side wall of the ceramic container hard and causing the side wall of the ceramic container to rupture.

[0044] It is understandable that in other embodiments of the present invention, the two electrodes may also be vertically spaced apart, in which case the electrode at the highest point is located at 80% of the capacity of the ceramic container.

[0045] It is understandable that in other embodiments of the present invention, temperature measuring elements are provided in both electrodes. With such a design, when one of the temperature measuring elements is damaged, a judgment can be made based on the detected temperature of the remaining temperature measuring element combined with the on / off status of the two electrodes.

[0046] It is understandable that in other embodiments of the present invention, the insulating seal may also include only the second sealing portion, which is sleeved on the outside of the rod portion and clamped and fixed between the rod portion and the hole wall of the through hole.

[0047] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. An electric stew pot, comprising a ceramic container having a cavity, a heating device for heating the ceramic container, and a control device electrically connected to the heating device, characterized in that: The same side wall of the ceramic container is penetrated by two through holes with a spacing of not less than 25 mm, and the two through holes are respectively installed with two electrodes electrically connected to the control device, at least one of the electrodes is installed with a temperature measuring element for detecting the temperature in the cavity, and the temperature measuring element is electrically connected to the control device, and the control device controls the heating state of the heating device according to the temperature detected by the temperature measuring element and the on-off state of the two electrodes.

2. The electric stew pot according to claim 1, characterized in that: An assembly cavity is provided inside the electrode, and the temperature measuring element is installed in the assembly cavity.

3. The electric stew pot according to claim 1, characterized in that: The temperature measuring element is one of a thermocouple, a thermal resistor and a thermistor.

4. The electric stew pot according to claim 1, characterized in that: The electrode includes a head and a rod. The rod passes through the through hole. The head is defined in the cavity to form a detection end. The portion of the rod located outside the ceramic container is connected to a nut.

5. The electric stew pot according to claim 4, characterized in that: The wall of the ceramic container is further provided with an insulating seal, which seals the assembly gap between the electrode and the wall of the ceramic container and isolates the electrode from the wall of the ceramic container.

6. The electric stew pot according to claim 5, characterized in that: The insulating seal includes a first sealing portion arranged around the through hole and a second sealing portion sleeved on the outside of the rod portion. The first sealing portion is clamped and fixed between the head and the inner wall of the ceramic container, and the second sealing portion is clamped and fixed between the rod portion and the hole wall of the through hole.

7. The electric stew pot according to any one of claims 1 to 6, characterized in that: The two electrodes are circumferentially spaced at the same height; or the two electrodes are vertically spaced.

8. The electric stew pot according to any one of claims 1 to 6, characterized in that: The distance between the two electrodes is less than 35 mm.

9. The electric stew pot according to any one of claims 1 to 6, characterized in that: The electric stew pot also includes a shell and a conductive member. The heating device, control device and conductive member are all installed on the shell. The conductive member is electrically connected to the control device. The ceramic container is placed in the shell in a removable manner. When the ceramic container is placed in the shell, the two electrodes and the temperature measuring element are all connected to the conductive member.

10. The electric stew pot according to claim 9, characterized in that: An upper coupler is installed on the outside of the ceramic container, the two electrodes and the temperature measuring element are electrically connected to the upper coupler, the conductive member is the lower coupler, and when the ceramic container is placed in the shell, the upper coupler and the lower coupler are plugged in and coupled to be energized.