Electric stewpot

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 the wall portion of the ceramic container is provided with a first set of spill-proof electrodes and a second set of spill-proof electrodes which are used for detecting different floating foam heights. The detection height of the first group of spill-proof electrodes is higher than that of the second group of spill-proof electrodes, the first group of spill-proof electrodes and the second group of spill-proof electrodes are respectively provided with two electrodes, and the two electrodes are horizontally arranged at an electrode interval; and the electrode spacing of the first group of anti-overflow electrodes is different from the electrode spacing of the second group of anti-overflow electrodes. According to the electric stewpot, the control device can control the heating device to reduce the heating power in advance through the arrangement of the two groups of anti-overflow electrodes with different detection heights and the pilot conduction of the anti-overflow electrodes with low detection heights, so that the influence caused by hysteresis is eliminated as much as possible, and the risk of overflow is further reduced.

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] Prior art electric stew pots include 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 time, the two electrodes conduct electricity and send a conduction signal to the control device. The control device controls the heating device to stop heating or reduce the heating power of the heating device based on the conduction signal, thereby dissipating the foam in the cavity and preventing it from overflowing. However, in actual use, due to the hysteresis in the control device's control of the heating device, that is, the heating device's slow response speed, the risk of overflow still exists, reducing the user experience. [Utility Model Content]

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide an electric stew pot. By setting two groups of anti-overflow electrodes with different detection heights, and by turning on the anti-overflow electrode with lower detection height first, the control device can control the heating device to reduce the heating power in advance, so as to eliminate the influence of hysteresis as much as possible, thereby reducing the risk of overflow.

[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. The wall of the ceramic container is provided with a first group of anti-overflow electrodes and a second group of anti-overflow electrodes for detecting different foam heights. The detection height of the first group of anti-overflow electrodes is higher than the detection height of the second group of anti-overflow electrodes. The first group of anti-overflow electrodes and the second group of anti-overflow electrodes each have two electrodes, and the two electrodes are arranged with an electrode spacing therebetween in a horizontal manner. The electrode spacing of the first group of anti-overflow electrodes is different from the electrode spacing of the second group of anti-overflow electrodes.

[0006] In the above electric stew pot, the electrode spacing of the first group of anti-overflow electrodes is greater than the electrode spacing of the second group of anti-overflow electrodes.

[0007] In the above electric stew pot, the electrode spacing of the first group of anti-overflow electrodes is smaller than the electrode spacing of the second group of anti-overflow electrodes.

[0008] In the above-mentioned electric stew pot, the electric stew pot also includes a shell having a accommodating cavity, the ceramic container can be placed in the accommodating cavity, the control device and a conductive member electrically connected to the control device are installed on the shell, and when the ceramic container is placed in the accommodating cavity, the first group of anti-overflow electrodes and the second group of anti-overflow electrodes are both electrically connected to the conductive member.

[0009] In the above electric stew pot, the conductive member includes four contact joints arranged in one-to-one correspondence with the four electrodes. When the ceramic container is placed in the accommodating cavity, the contact joints contact the corresponding electrodes to conduct electricity.

[0010] In the above electric stew pot, the contact joint is vertically floatingly mounted on the housing, and an elastic member is further provided on the housing. Under the action of the elastic member, the contact joint elastically contacts the corresponding electrode to conduct electricity.

[0011] In the above-mentioned electric stew pot, the conductive part is a lower coupler, an upper coupler is provided on the outside of the ceramic container, the first group of anti-overflow electrodes and the second group of anti-overflow electrodes are electrically connected to the upper coupler, and when the ceramic container is placed in the accommodating cavity, the upper coupler and the lower coupler are plugged in and coupled and energized.

[0012] In the above electric stew pot, the horizontal projections of the four electrodes do not overlap with each other.

[0013] In the above electric stew pot, the first group of anti-overflow electrodes and the second group of anti-overflow electrodes are arranged on the same side wall of the ceramic container.

[0014] In the above-mentioned electric stew pot, the volume of the ceramic container is V, the volume of the ceramic container below the detection height of the first group of anti-overflow electrodes is V1, 0.7V<V1<0.9V, and the volume of the ceramic container below the detection height of the second group of anti-overflow electrodes is V2, 0.6V<V2<0.7V.

[0015] Beneficial effects of the utility model:

[0016] 1. The wall of the ceramic container in the present invention is provided with a first set of anti-overflow electrodes and a second set of anti-overflow electrodes for detecting different heights of foam. The detection height of the first set of anti-overflow electrodes is higher than the detection height of the second set of anti-overflow electrodes. The first set of anti-overflow electrodes and the second set of anti-overflow electrodes each have two electrodes, and the two electrodes have an electrode spacing that is arranged horizontally at intervals. In this way, when the liquid in the ceramic container is heated, the viscosity will increase. The longer the heating time and the greater the heating power, the higher the viscosity. The higher the viscosity, the easier it is to bubble and form foam. As the amount of foam increases, the foam will rise and first conduct the two electrodes of the lower second set of anti-overflow electrodes. At this time, the control device can control the heating device to reduce the heating power to make the liquid boil slowly, thereby reducing the speed of foam generation, so that the foam is slowly boiled. It rises slowly. When the foam rises and conducts the two electrodes of the first set of anti-overflow electrodes, the liquid is in a boiling state at this time. The control device can control the heating device to further reduce the heating power or even stop heating, so as to further reduce the speed of foam generation, thereby reducing the risk of overflow. That is, the utility model provides a second set of anti-overflow electrodes and makes them conduct first, so that the control device can control the heating device to reduce the heating power in advance, so as to trigger the protection mechanism in advance, thereby minimizing the impact of the hysteresis of a single reduction in heating power in the prior art, thereby reducing the risk of overflow. In addition, the electrode spacing of the first set of anti-overflow electrodes is different from the electrode spacing of the second set of anti-overflow electrodes. Such a design can reduce the requirements for the spacing between the two electrodes in the two sets of electrodes, thereby reducing the difficulty of assembly.

[0017] 2. The electrode spacing of the first set of anti-overflow electrodes is larger than that of the second set of anti-overflow electrodes. Since the first set of anti-overflow electrodes is farther from the liquid surface than the second set of anti-overflow electrodes, in certain special circumstances (such as steam condensation), condensation water is easily formed on the wall of the ceramic container at a higher position. The conductivity of condensation water is higher than that of foam, resulting in an increase in local conductivity. If the two electrodes of the first set of anti-overflow electrodes are too close to each other, false alarms may occur due to these non-overflow factors. Therefore, increasing the spacing can reduce the possibility of such false alarms; this will help improve the accuracy of foam identification. The main purpose of setting the second set of anti-overflow electrodes at a lower position is to trigger the protection mechanism in time when the foam approaches or reaches the minimum safety line of the equipment. Since the foam will fluctuate in this area during normal use, setting a closer spacing can ensure that the protection mechanism can be quickly triggered when the foam rises slightly, responding more promptly and preventing overflow.

[0018] 3. The electrode spacing of the first set of anti-overflow electrodes is smaller than the electrode spacing of the second set of anti-overflow electrodes. When the first set of anti-overflow electrodes is set at a higher position, it is particularly important to increase the sensitivity of the electrodes because it is difficult for foam to reach this position under normal circumstances. Setting the electrode spacing closer allows even a small amount of foam to contact both electrodes of the first set of anti-overflow electrodes at the same time when the foam approaches or reaches this height, thereby triggering the protection mechanism. This design is more suitable for anti-overflow protection scenarios that require high sensitivity. When the second set of anti-overflow electrodes is set at a lower position, since foam will frequently fluctuate to this area during normal use, it is particularly important to reduce the possibility of false triggering. Setting the electrode spacing farther can avoid accidentally triggering the protection mechanism due to small fluctuations in the foam, thereby reducing false triggering and improving the stability and reliability of the system.

[0019] 4. The electric stew pot also includes a housing having a receiving cavity, wherein the ceramic container is removably placed in the receiving cavity. A control device and a conductive member electrically connected to the control device are mounted on the housing. When the ceramic container is placed in the receiving cavity, the first set of anti-overflow electrodes and the second set of anti-overflow electrodes are both electrically connected to the conductive member. This design allows the ceramic container to be individually processed and formed, which is particularly convenient for the processing of the ceramic container. In addition, the ceramic container can be removed and cleaned separately, thereby reducing the difficulty of cleaning the ceramic container.

[0020] 5. The conductive element includes four contact terminals corresponding to the four electrodes. When the ceramic container is placed in the accommodating cavity, the contact terminals make contact with the corresponding electrodes to conduct electricity. This design simplifies the structure and cost of the conductive element, thereby reducing the manufacturing cost of the product.

[0021] 6. The contact connector is vertically mounted in a floating position on the housing, and an elastic member is also provided on the housing. Under the action of the elastic member, the contact connector elastically contacts the corresponding electrode to achieve electrical conductivity. This design ensures that the contact connector always maintains full contact with the electrode under the action of the elastic member to achieve electrical conductivity, thereby ensuring the reliability of the electrical connection between the electrode and the corresponding contact connector. In addition, the provision of the elastic member also reduces the assembly precision requirements of the contact connector and electrode, thereby reducing the processing cost of the product.

[0022] 7. The conductive element is a lower coupler. An upper coupler is located outside the ceramic container. The first and second sets of anti-overflow electrodes are electrically connected to the upper coupler. When the ceramic container is placed in the accommodating chamber, the upper and lower couplers are plugged in and coupled, energizing the electrodes. This design ensures a reliable electrical connection between the electrodes and the control device, thereby ensuring reliable foam detection.

[0023] 8. The horizontal projections of the four electrodes do not overlap. For solutions that use contact connectors for electrical contact with the electrodes, this design allows the four contact connectors to be spaced apart on the same circumference, fully utilizing the existing circumferential space of the housing. This avoids overlapping horizontal projections of some electrodes, which would require radial expansion of the housing to space the contact connectors apart radially, thereby reducing the overall radial size of the housing.

[0024] 9. The first and second sets of anti-overflow electrodes are disposed on the same sidewall of the ceramic container. This design allows the wires or intermediate conductive members connected to the first and second sets of anti-overflow electrodes to be centrally distributed, making the overall structure more compact.

[0025] 10. The volume of the ceramic container is V. The volume of the ceramic container below the detection height of the first set of anti-overflow electrodes is V1, with 0.7V < V1 < 0.9V. The volume of the ceramic container below the detection height of the second set of anti-overflow electrodes is V2, with 0.6V < V2 < 0.7V. With this design, if the first set of anti-overflow electrodes is set too low, the second set of anti-overflow electrodes will also be set too low. To prevent unheated liquid from flowing through the second set of anti-overflow electrodes, the electric stew pot can only cook small amounts of food. If the first set of anti-overflow electrodes is set too high, there is a risk of overflow. If the second set of anti-overflow electrodes is set too low, the foam will frequently fluctuate into this area during normal use, increasing the possibility of false triggering. If the second set of anti-overflow electrodes is set too high, the first set of anti-overflow electrodes will be set too high, or the two sets of anti-overflow electrodes will be too close to each other. In either case, the foam will not dissipate in time, posing a risk of overflow.

[0026] 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

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] Figure 1 This is a stepped cross-sectional view of the electric stew pot in Example 1 of the present utility model;

[0029] Figure 2 for Figure 1 A partial enlarged schematic diagram of center C;

[0030] Figure 3 This is a vertical cross-sectional view of the electric stew pot in Example 1 of the present utility model;

[0031] Figure 4 for Figure 3 A partial enlarged schematic diagram of D in the middle.

[0032] Reference numerals:

[0033] 001, cavity; 100, shell; 110, aluminum pot; 120, outer cover; 130, bracket; 140, elastic member; 200, ceramic container; 210, plastic seat; 211, slot; 300, heating device; 400, control device; 500, electrode; 510, rod; 520, detection end; 600, contact joint; 610, limit shoulder. [Specific implementation method]

[0034] 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 a wall portion of the ceramic container is provided with a first group of anti-overflow electrodes and a second group of anti-overflow electrodes for detecting different foam heights, the detection height of the first group of anti-overflow electrodes is higher than the detection height of the second group of anti-overflow electrodes, the first group of anti-overflow electrodes and the second group of anti-overflow electrodes each have two electrodes, the two electrodes are arranged with an electrode spacing therebetween in a horizontal manner, and the electrode spacing of the first group of anti-overflow electrodes is different from the electrode spacing of the second group of anti-overflow electrodes. As a result, when the liquid in the ceramic container is heated, its viscosity increases. The longer the heating time and the greater the heating power, the higher the viscosity. The higher the viscosity, the easier it is to foam and form froth. As the amount of froth increases, the froth rises and first conducts electricity to the two electrodes of the lower second set of overflow prevention electrodes. At this time, the control device can control the heating device to reduce the heating power to slowly boil the liquid, thereby reducing the rate of froth generation and causing the froth to rise slowly. When the froth rises and conducts electricity to the two electrodes of the first set of overflow prevention electrodes, the liquid is in a boiling state. The control device can control the heating device to further reduce the heating power or even stop heating to further reduce the rate of froth generation, thereby reducing the risk of overflow. That is, by providing the second set of overflow prevention electrodes and conducting them first, the present invention allows the control device to control the heating device to reduce the heating power in advance, thereby triggering the protection mechanism in advance, thereby minimizing the impact of the hysteresis caused by a single reduction in heating power in the prior art, thereby reducing the risk of overflow. In addition, the electrode spacing of the first set of overflow prevention electrodes is different from the electrode spacing of the second set of overflow prevention electrodes. This design can reduce the requirements for the spacing between the two electrodes in the two sets of electrodes, thereby reducing the difficulty of assembly.

[0035] 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.

[0036] Example 1

[0037] like Figures 1 to 4As 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, and the control device 400 is a main control board, which is installed on the shell 100 and connected to the heating device 300. Electrically connected to control the heating power and start and stop of the heating device 300, and the wall of the ceramic container 200 is provided with a first group of anti-overflow electrodes A and a second group of anti-overflow electrodes B for detecting different foam heights. The detection height of the first group of anti-overflow electrodes A is higher than the detection height of the second group of anti-overflow electrodes B. The first group of anti-overflow electrodes A and the second group of anti-overflow electrodes B each have two electrodes 500, and the two electrodes 500 have an electrode spacing arranged in a horizontal interval. The electrode spacing L1 of the first group of anti-overflow electrodes A is different from the electrode spacing L2 of the second group of anti-overflow electrodes B. In this way, when the liquid in the ceramic container 200 is heated, its viscosity will increase. The longer the heating time and the greater the heating power, the higher the viscosity. The higher the viscosity, the easier it is to bubble and form foam. As the amount of foam increases, the foam will rise and first conduct the two electrodes 500 of the second group of anti-overflow electrodes B at the lower position. At this time, the control device 400 controls the heating device 300 to reduce the heating power according to the conduction signal of the second group of anti-overflow electrodes B to make the liquid boil slowly, even if the liquid is in a pre-boiling state, thereby reducing the speed of foam generation, causing the foam to rise slowly. When the foam rises and conducts the two electrodes 500 of the first group of anti-overflow electrodes A, the liquid is in a boiling state. The control device 400 controls the heating device 300 to reduce the heating power according to the conduction signal of the second group of anti-overflow electrodes A to make the liquid boil slowly, even if the liquid is in a pre-boiling state, thereby reducing the speed of foam generation, causing the foam to rise slowly. The conduction signal controls the heating device 300 to further reduce the heating power or even stop heating, so as to further reduce the speed of foam generation, thereby reducing the risk of overflow. That is, in this embodiment, by setting the second group of anti-overflow electrodes B and turning it on first, the control device 400 can control the heating device 300 to reduce the heating power in advance, so as to trigger the protection mechanism in advance, thereby eliminating the influence of the hysteresis of a single reduction in heating power in the prior art as much as possible, thereby reducing the risk of overflow; in addition, the electrode spacing L1 of the first group of anti-overflow electrodes A is different from the electrode spacing L2 of the second group of anti-overflow electrodes B. Such a design can reduce the requirements for the spacing between the two electrodes 500 in the two groups of electrodes, thereby reducing the difficulty of assembly.

[0038] Specifically, in this embodiment, the volume of the ceramic container 200 is V, and the volume of the ceramic container 200 below the detection height of the first group of anti-overflow electrodes A is V1, that is, the volume of the ceramic container 200 below the height of the two electrodes 500 of the first group of anti-overflow electrodes A is V1, satisfying 0.7V<V1<0.9V. When the first group of anti-overflow electrodes A is set too low, it will cause the second group of anti-overflow electrodes B to be set too low. In order to avoid the unheated liquid from conducting to the second group of anti-overflow electrodes B, the electric stew pot can only cook a small amount of food, thereby reducing the user experience; and when the first group of anti-overflow electrodes A is set too high, there is a risk of overflow; for this reason, V1 in this embodiment is preferably 0.8V. Such a design can not only ensure that the electric stew pot can cook more food, but also reduce the risk of overflow. Of course, optionally, V1 can also be but not limited to 0.7V, 0.75V, 0.85V, 0.9V. In addition, in this embodiment, the volume of the ceramic container 200 below the detection height of the second set of anti-overflow electrodes B is V2, that is, the volume of the ceramic container 200 below the height of the two electrodes 500 of the second set of anti-overflow electrodes B is V2, which satisfies 0.6V<V2<0.7V. When the second set of anti-overflow electrodes B is set too low, the foam will frequently fluctuate to this area during normal use, thereby increasing the possibility of false triggering. When the second set of anti-overflow electrodes B is set too high, the first set of anti-overflow electrodes A will be set too high or the two sets of anti-overflow electrodes will be too close. In either case, the foam will not be able to dissipate in time, and there is a risk of overflow. For this reason, V2 in this embodiment is preferably 0.8V. Such a design can ensure that the electric stew pot can cook more ingredients while reducing the risk of overflow. Of course, V2 can also be, but is not limited to, 0.6V, 0.65V, 0.75V, or 0.8V.

[0039] Preferably, in this embodiment, the electrode spacing L1 of the first group of anti-overflow electrodes A is the circumferential distance between the two electrodes 500 in the first group of anti-overflow electrodes A, and the electrode spacing L2 of the second group of anti-overflow electrodes B is the circumferential distance between the two electrodes 500 in the second group of anti-overflow electrodes B, satisfying that the electrode spacing L1 of the first group of anti-overflow electrodes A is greater than the electrode spacing L2 of the second group of anti-overflow electrodes B. Since the first set of anti-overflow electrodes A is farther away from the liquid surface than the second set of anti-overflow electrodes B, in certain special circumstances (such as steam condensation), condensation water is easily formed on the inner wall of the ceramic container 200 at a higher position. The conductivity of condensation water is higher than that of foam, resulting in an increase in local conductivity. If the two electrodes 500 of the first set of anti-overflow electrodes A are too close to each other, false alarms may occur due to these non-overflow factors. Therefore, increasing the interval can reduce the possibility of such false alarms; this will help improve the accuracy of foam identification; and the main purpose of setting the second set of anti-overflow electrodes B at a lower position is to trigger the protection mechanism in time when the foam approaches or reaches the minimum safety line of the equipment. Since the foam will fluctuate in this area during normal use, setting a closer interval can ensure that the protection mechanism can be quickly triggered when the foam rises slightly, and the response is more timely to prevent overflow.

[0040] In this embodiment, the ceramic container 200 is removably placed within the accommodating cavity. The housing 100 is equipped with the aforementioned control device 400 and a conductive member electrically connected to the control device 400. When the ceramic container 200 is placed within the accommodating cavity, both the first set of overflow prevention electrodes A and the second set of overflow prevention electrodes B are electrically connected to the conductive member. This design allows the ceramic container 200 to be individually processed and molded, which is particularly advantageous. Furthermore, the ceramic container 200 can be removed and cleaned individually, reducing the difficulty of cleaning the ceramic container 200.

[0041] To reduce the cost of the conductive component, the conductive component in this embodiment includes four contact connectors 600, each corresponding to the four electrodes 500. The contact connectors 600 are connected to the control device 400 via wires. When the ceramic container 200 is placed in the accommodating cavity, the four contact connectors 600 make contact with the corresponding four electrodes 500 to conduct electricity. This design simplifies the structure and cost of the conductive component, thereby reducing the manufacturing cost of the product.

[0042] like Figures 3 and 4As shown, in this embodiment, the side wall of the ceramic container 200 is provided with four through holes, and the four electrodes 500 are respectively arranged to pass through the four through holes. The electrode 500 includes a rod portion 510 and a detection end 520 arranged at one end of the rod portion 510. The rod portion 510 is arranged to pass through the through hole. The outer diameter of the detection end 520 is larger than the aperture of the through hole and is limited to the inner side of the ceramic container 200. A plastic seat 210 is provided on the outer side of the ceramic container 200. A slot 211 is provided in the plastic seat 210. The rod portion 510 is inserted into the slot 211, and the screw passes through the bottom wall of the slot 211 and is locked with the threaded hole on the rod portion 510, so that the rod portion 510 is fixed to the plastic seat 210 by the screw. The design of the plastic seat 210 also avoids the risk of electric shock caused by the user touching the electrode 500.

[0043] Four contact connectors 600 are installed on the top of the shell 100 and extend vertically. The bottom of the plastic seat 210 is provided with a vertically extending avoidance hole. The upper end of the avoidance hole is connected to the slot 211, and the lower end of the avoidance hole is open. When the ceramic container 200 is placed in the accommodating cavity, the plastic seat 210 is supported on the top of the shell 100, and the contact connector 600 passes through the avoidance hole and contacts the rod 510 to realize the electrical connection between the electrode 500 and the corresponding contact connector 600.

[0044] In order to avoid the contact connector 600 from being unable to contact and conduct electricity with the rod 510 due to processing and assembly errors, the contact connector 600 in this embodiment is vertically floated and installed on the shell 100. The shell 100 includes an aluminum pot 110 forming a accommodating cavity and an outer cover 120 arranged on the outside of the aluminum pot 110. The aluminum pot 110 and the outer cover 120 form an installation cavity for accommodating the heating device 300 and the control device 400. A bracket 130 is also fixed in the installation cavity. The bracket 130 is provided with a vertically penetrating installation hole. The top wall of the shell 100 is provided with a The housing 100 has a through-hole, and the contact connector 600 passes through the mounting hole and the through-hole and floats up and down relative to the housing 100. The contact connector 600 is provided with a limiting shoulder 610, which is floatingly mounted between the bracket 130 and the through-hole. The housing 100 is also provided with an elastic member 140, which is a spring. The elastic member 140 is arranged in the mounting cavity and is clamped between the limiting shoulder 610 and the bracket 130. Under the action of the elastic member 140, the contact connector 600 elastically contacts the corresponding electrode 500 to conduct electricity. This design ensures that the contact connector 600 always maintains full contact with the electrode 500 under the action of the elastic member 140 to achieve electrical conductivity, thereby ensuring the reliability of the electrical connection between the electrode 500 and the corresponding contact connector 600. In addition, the provision of the elastic member 140 also reduces the assembly precision requirements of the contact connector 600 and the electrode 500, thereby reducing the processing cost of the product.

[0045] Preferably, in this embodiment, the first set of anti-overflow electrodes A and the second set of anti-overflow electrodes B are disposed on the same sidewall of the ceramic container 200. This design allows the four contact connectors 600 connected to the first set of anti-overflow electrodes A and the second set of anti-overflow electrodes B to be centrally distributed, making the overall structure more compact. Preferably, the four electrodes 500 are fixed to the same plastic base 210, thereby eliminating the need for multiple plastic bases 210 and reducing product manufacturing costs.

[0046] Finally, in this embodiment, the horizontal projections of the four electrodes 500 do not overlap with each other. Preferably, the horizontal projections of the two electrodes 500 in the second group of anti-overflow electrodes B are located between the horizontal projections of the two electrodes 500 in the first group of anti-overflow electrodes A. This design allows the four contact joints 600 to be distributed at intervals on the same circle, thereby making full use of the existing circumferential space of the shell 100, avoiding the overlap of the horizontal projections of some electrodes and the need to expand radially in the shell 100 to make some contact joints 600 distributed radially at intervals, thereby reducing the overall radial size of the shell 100.

[0047] It is understood that in other embodiments of the present invention, the conductive member is a lower coupler, which is electrically connected to the control device via a wire. An upper coupler is provided on the outside of the ceramic container, and the first and second groups of anti-overflow electrodes are electrically connected to the upper coupler via a wire. When the ceramic container is placed in the accommodating chamber, the upper and lower couplers are plugged in and coupled to each other and energized. With this design, the reliability of the electrical connection between the electrodes and the control device can be ensured by plugging in and coupling the upper and lower couplers, thereby ensuring the reliability of foam detection. It should be noted that when the conductive member is a lower coupler, the horizontal projections of the two electrodes of the first group of anti-overflow electrodes A and the two electrodes of the second group of anti-overflow electrodes B can be arranged to at least partially overlap.

[0048] It is understandable that in other embodiments of the present invention, the ceramic container is fixedly installed in the shell. In this case, the conductive member can be omitted, and the four electrodes are directly electrically connected to the control device through wires.

[0049] It is understandable that, in other embodiments of the present invention, the electrode spacing of the first group of anti-overflow electrodes A and the electrode spacing of the second group of anti-overflow electrodes B can also be set to be the same.

[0050] It can be understood that, in other embodiments of the present invention, the two electrodes of the first group of anti-overflow electrodes A are vertically spaced apart, and / or the two electrodes of the second group of anti-overflow electrodes B are vertically spaced apart.

[0051] Example 2

[0052] Compared to Example 1, this embodiment differs in that the electrode spacing of the first set of overflow prevention electrodes A is smaller than the electrode spacing of the second set of overflow prevention electrodes B. When the first set of overflow prevention electrodes A is positioned at a higher location, since foam normally has difficulty reaching this position, increasing the electrode sensitivity is particularly important. Setting the electrode spacing closer allows even a small amount of foam to simultaneously contact both electrodes of the first set of overflow prevention electrodes A when the foam approaches or reaches this height, thereby triggering the protection mechanism. This design is more suitable for overflow protection scenarios requiring highly sensitive protection. When the second set of overflow prevention electrodes B is positioned at a lower location, since foam frequently fluctuates into this area during normal use, reducing the possibility of false triggering becomes particularly important. Setting the electrode spacing further apart prevents the protection mechanism from being accidentally triggered by small fluctuations in the foam, thereby reducing false triggering and improving the stability and reliability of the system.

[0053] 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 wall of the ceramic container is provided with a first group of anti-overflow electrodes and a second group of anti-overflow electrodes for detecting different foam heights. The detection height of the first group of anti-overflow electrodes is higher than the detection height of the second group of anti-overflow electrodes. The first group of anti-overflow electrodes and the second group of anti-overflow electrodes each have two electrodes, and the two electrodes have an electrode spacing arranged horizontally at intervals. The electrode spacing of the first group of anti-overflow electrodes is different from the electrode spacing of the second group of anti-overflow electrodes.

2. The electric stew pot according to claim 1, characterized in that: The electrode spacing of the first group of anti-overflow electrodes is greater than the electrode spacing of the second group of anti-overflow electrodes.

3. The electric stew pot according to claim 1, characterized in that: The electrode spacing of the first group of anti-overflow electrodes is smaller than the electrode spacing of the second group of anti-overflow electrodes.

4. The electric stew pot according to claim 1, characterized in that: The electric stew pot also includes a shell having a accommodating cavity, and the ceramic container can be placed in the accommodating cavity. The control device and a conductive member electrically connected to the control device are installed on the shell. When the ceramic container is placed in the accommodating cavity, the first group of anti-overflow electrodes and the second group of anti-overflow electrodes are both electrically connected to the conductive member.

5. The electric stew pot according to claim 4, characterized in that: The conductive member includes four contact joints arranged in one-to-one correspondence with the four electrodes. When the ceramic container is placed in the accommodating cavity, the contact joints contact and conduct electricity with the corresponding electrodes.

6. The electric stew pot according to claim 5, characterized in that: The contact connector is vertically and floatingly mounted on the housing. An elastic member is further provided on the housing. Under the action of the elastic member, the contact connector elastically contacts the corresponding electrode to conduct electricity.

7. The electric stew pot according to claim 4, characterized in that: The conductive part is a lower coupler, an upper coupler is provided on the outside of the ceramic container, the first group of anti-overflow electrodes and the second group of anti-overflow electrodes are electrically connected to the upper coupler, and when the ceramic container is placed in the accommodating cavity, the upper coupler and the lower coupler are plugged in and coupled to be energized.

8. The electric stew pot according to any one of claims 1 to 7, characterized in that: The horizontal projections of the four electrodes do not overlap with each other.

9. The electric stew pot according to any one of claims 1 to 7, characterized in that: The first group of anti-overflow electrodes and the second group of anti-overflow electrodes are arranged on the same side wall portion of the ceramic container.

10. The electric stew pot according to any one of claims 1 to 7, characterized in that: The volume of the ceramic container is V, the volume of the ceramic container below the detection height of the first set of anti-overflow electrodes is V1, 0.7V<V1<0.9V, and the volume of the ceramic container below the detection height of the second set of anti-overflow electrodes is V2, 0.6V<V2<0.7V.

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