Double-temperature control device and electric cooking utensil

Abstract

The utility model relates to a double-temperature-control device and an electric cooking utensil, and the device comprises a temperature control circuit and a pot body; the temperature control circuit comprises a first switch module, a second switch module and a heating device group; the first switch module and the heating device group are correspondingly arranged; the heating device group is arranged below the pot body; the second switch module is arranged corresponding to the pot body; the first switch module, the second switch module and the heating device group are connected in series; or, the first switch module is connected in series with the first heating element in the heating element group to form a first series unit; the second switch module is connected in series with a second heating element in the heating element group to form a second series unit; the first series unit and the second series unit are connected in parallel. According to the invention, the problem of potential safety hazards in related technologies is solved; the double-temperature-control structure formed by the first switch module and the second switch module is used for controlling the heating state of the heating device set, so that the use temperature of the pot body is guaranteed, and meanwhile the use safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cooking appliances, and in particular to a dual temperature control device and an electric cooking appliance. Background Art

[0002] More and more electric cooking appliances are equipped with temperature control devices to improve the control of cooking temperature during the cooking process. The current temperature control device includes a temperature sensor, a switch module and a processor; the temperature sensor is used to collect the temperature of the pot body; the processor is used to generate a control signal to control the switch module to disconnect when the temperature of the pot body reaches the preset temperature threshold, so that the heating tube stops heating the pot body to achieve temperature control of the pot body. Although this solution can control the temperature of the pot body, in abnormal use conditions such as when the pot body is removed, the temperature collected by the temperature sensor does not reach the preset threshold, causing the heating tube to continue heating, posing a safety hazard.

[0003] Currently, no effective solution has been proposed to address the problem of potential safety hazards in related technologies under abnormal usage conditions. Utility Model Content

[0004] In this embodiment, a dual temperature control device and an electric cooking appliance are provided to solve the problem of potential safety hazards in abnormal use in the related art.

[0005] In a first aspect, a dual temperature control device is provided in this embodiment, comprising a temperature control circuit and a pot body;

[0006] The temperature control circuit includes a first switch module, a second switch module and a heating device group;

[0007] The first switch module is arranged correspondingly to the heating device group, and a first working state of the first switch module is determined according to first temperature information of the heating device group detected by the first switch module and a preset first temperature threshold; the second switch module is arranged correspondingly to the pot body, and a second working state of the second switch module is determined according to second temperature information of the pot body detected by the second switch module and a preset second temperature threshold; the heating device group is arranged below the pot body, and a heating state of the heating device group is determined according to the first working state and the second working state;

[0008] The heating device group includes at least one heating element, and the first switch module, the second switch module and the heating element are connected in series; or, the heating device group includes a first heating element and a second heating element, the first switch module is connected in series with the first heating element to form a first series unit; the second switch module is connected in series with the second heating element to form a second series unit; the first series unit and the second series unit are connected in parallel.

[0009] In some of the embodiments, the dual temperature control device further includes a heating plate disposed below the pot body;

[0010] The heating device group is arranged in the heating disk, and the first switch module is connected and fixed to the heating disk.

[0011] In some of the embodiments, the dual temperature control device further includes a heat preservation cover;

[0012] The heat preservation cover is fixedly arranged below the heating plate;

[0013] The dual temperature control device further includes a temperature sensing cup assembly; the temperature sensing cup assembly can be lifted and attached to the outside of the pot body, and the second switch module is arranged in the temperature sensing cup assembly to sense the temperature of the pot body;

[0014] The temperature sensing cup assembly also includes an elastic element and a shell;

[0015] The second switch module is arranged in the housing; and the elastic element is arranged between the second switch module and the heat preservation cover.

[0016] In some of the embodiments, a mounting hole is provided in the heating plate; and the temperature sensing cup assembly is arranged in the mounting hole.

[0017] In some embodiments, a first temperature threshold of the first switch module is the same as or different from a second temperature threshold of the second switch module.

[0018] In some embodiments, the first switch module and the second switch module are both mechanical switches; the first switch module is a first thermostat; and the second switch module is a second thermostat.

[0019] In some of the embodiments, the dual temperature control device further includes a processor; the first switch module and the second switch module are both electronic switches;

[0020] The processor is connected to the first switch module and the second switch module respectively, and is used to control a first control state of the first switch module and a second control state of the second switch module.

[0021] In some of the embodiments, when the first switch module, the second switch module and the heating device group are connected in series;

[0022] The first switch module is used to put the first switch module into a first disconnection state to stop the heating device group from heating when it is detected that the first temperature information of the heating device group exceeds a preset first temperature threshold;

[0023] The second switch module is used to put the second switch module into a second disconnection state when it is detected that the second temperature information of the pot body exceeds a preset second temperature threshold, so that the heating device group stops heating.

[0024] In some embodiments, the first switch module (10) is connected in series with the first heating element (31) to form a first series unit; the second switch module (21) is connected in series with the second heating element (32) to form a second series unit; when the first series unit and the second series unit are connected in parallel;

[0025] The second switch module is used to put the second switch module into a second disconnection state when detecting that the second temperature information of the pot body exceeds a preset second temperature threshold, so that the second heating element in the heating device group stops heating;

[0026] The first switch module is used to put the first switch module in a first disconnection state to stop heating the first heating element in the heating device group when it is detected that the first temperature information of the first heating element in the heating device group exceeds a preset first temperature threshold.

[0027] In a second aspect, an electric cooking appliance is provided in this embodiment, comprising the dual temperature control device as described in the first aspect.

[0028] Compared with the related art, the dual temperature control device and the electric cooking appliance provided in this embodiment, wherein the dual temperature control device comprises a temperature control circuit and a pot body; the temperature control circuit comprises a first switch module, a second switch module and a heating device group; the first switch module is arranged correspondingly to the heating device group, and a first working state of the first switch module is determined according to first temperature information of the heating device group detected by the first switch module and a preset first temperature threshold; the second switch module is arranged correspondingly to the pot body, and a second working state of the second switch module is determined according to second temperature information of the pot body detected by the second switch module and a preset second temperature threshold; the heating device group is arranged below the pot body, and the heating device group is arranged correspondingly to the first working state and the second working state of the second switch module. The working state determines the heating state of the heating device group; the heating device group includes at least one heating element, and the first switch module, the second switch module and the heating element are connected in series; or the heating device group includes a first heating element and a second heating element, the first switch module is connected in series with the first heating element to form a first series unit; the second switch module is connected in series with the second heating element to form a second series unit; the first series unit is connected in parallel with the second series unit; the problem of potential safety hazards in abnormal use in the related technology is solved; the dual temperature control structure formed by the first switch module and the second switch module is used to control the heating state of the heating device group, so as to improve the safety of use while ensuring the use temperature of the pot body.

[0029] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 It is a structural schematic diagram of a dual temperature control device provided in one embodiment of the present application;

[0032] Figure 2 is an exploded view of a dual temperature control device provided in one embodiment of the present application;

[0033] Figure 3 is a cross-sectional view of a dual temperature control device provided in one embodiment of the present application;

[0034] Figure 4 is a schematic diagram of a series circuit provided by an embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of a parallel circuit provided in one embodiment of the present application.

[0036] In the figure: 10, first switch module; 21, second switch module; 22, elastic element; 23, shell; 31, first heating element; 32, second heating element; 40, pot body; 50, heating plate; 60, heat preservation cover. DETAILED DESCRIPTION

[0037] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0038] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the", "these" and the like in this application do not represent quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether directly or indirectly. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. Usually, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0039] In this embodiment, a dual temperature control device is provided. Figure 1 is a schematic diagram of the structure of the dual temperature control device of this embodiment, Figure 2 is an exploded view of the dual temperature control device of this embodiment, Figure 3 is a cross-sectional view of the dual temperature control device of this embodiment, as shown in Figure 1 , Figure 2 as well as Figure 3 As shown, the dual temperature control device includes: a temperature control circuit and a pot body 40;

[0040] The temperature control circuit includes a first switch module 10, a second switch module 21 and a heating device group;

[0041] The first switch module 10 is arranged correspondingly to the heating device group, and the first working state of the first switch module 10 is determined according to the first temperature information of the heating device group detected by the first switch module 10 and the preset first temperature threshold; the second switch module 21 is arranged correspondingly to the pot body 40, and the second working state of the second switch module 21 is determined according to the second temperature information of the pot body 40 detected by the second switch module 21 and the preset second temperature threshold; the heating device group is arranged below the pot body 40, and the heating state of the heating device group is determined according to the first working state and the second working state;

[0042] The heating device group includes at least one heating element, and the first switch module 10, the second switch module 21 and the heating element are connected in series; or, the heating device group includes a first heating element 31 and a second heating element 32, the first switch module 10 and the first heating element 31 are connected in series to form a first series unit; the second switch module 21 and the second heating element 32 are connected in series to form a second series unit; the first series unit and the second series unit are connected in parallel.

[0043] Specifically, the pot body 40 is a container for placing the cooking object; the heating device group is arranged below the pot body 40, and the cooking object in the pot body 40 is cooked when the heating device group is powered on. Then the temperature control of the heating device group and the temperature control of the pot body 40 will affect the cooking effect of the cooking object. Therefore, it is necessary to control both of them, and also to avoid the safety hazard caused by the heating device group continuing to heat after the pot body 40 is removed.

[0044] Therefore, in this embodiment, the second switch module 21 can be attached to the outside of the pot body 40, so as to ensure the accuracy of the temperature (second temperature information) detection of the pot body 40. The first switch module 10 is set corresponding to the heating device group. It can be considered that the first switch module 10 is set within the thermal radiation range of the heating device group (for example: set within a preset distance threshold from the heating device group), so as to ensure the accuracy of the temperature (first temperature information) detection of the heating device group. While the two temperature information are detected, they are compared with the preset temperature threshold to switch the working state of the corresponding door opening module to whether it is in the on state or in the off state, and then determine the heating state of the heating device group, so as to improve the safety of use while ensuring the use temperature of the pot body 40.

[0045] It should be noted that the first switch module 10, the second switch module 21 and the heating device group are set in different ways (in series or in parallel), and the process of determining the heating state of the heating device group according to the first working state and the second working state is also different, but both can be directly determined by the state of the device itself and the connection relationship between the devices. The first working state refers to the working state of the first switch module 10, which is determined according to the first temperature information of the heating device group detected by the first switch module 10 and the preset first temperature threshold; the second working state refers to the working state of the second switch module 21, which is determined according to the second temperature information of the pot body 40 detected by the second switch module 21 and the preset second temperature threshold. Among them, the first temperature threshold of the first switch module 10 and the second temperature threshold of the second switch module 21 can be the same or different. In actual use, the first temperature threshold and the second temperature threshold can be set according to the requirements of the use scenario, and there is no limitation on this. Among them, the first working state and the second working state both include a circuit state and a circuit breaker state. The terms "first", "second", etc. involved in this application are only used to distinguish similar objects.

[0046] The series connection method is: the first switch module 10, the second switch module 21 and the heating device group are connected in series, and the heating device group includes at least one heating element; this method does not limit the number of heating elements in the heating device group. The parallel connection method is: the heating device group includes a first heating element 31 and a second heating element 32, the first switch module 10 and the first heating element 31 are connected in series to form a first series unit; the second switch module 21 and the second heating element 32 are connected in series to form a second series unit; the first series unit and the second series unit are connected in parallel;

[0047] Through the above-mentioned dual temperature control device, the dual temperature control device includes a temperature control circuit and a pot body 40; the temperature control circuit includes a first switch module 10, a second switch module 21 in the temperature sensing cup assembly and a heating device group; the first switch module 10 is correspondingly arranged with the heating device group; the heating device group is arranged below the pot body 40; the temperature sensing cup assembly can be lifted and attached to the outside of the pot body 40; the first switch module 10, the second switch module 21 and the heating device group are connected in series; or the heating device group includes a first heating element 31 and a second heating element 32, the first switch module 10 and the first heating element 31 are connected in series to form a first series unit; the second switch module 21 and the second heating element 32 are connected in series to form a second series unit; the first series unit and The second series units are connected in parallel; the first working state of the first switch module 10 is determined based on the first temperature information of the heating device group detected by the first switch module 10 and the preset second temperature threshold; the second working state of the second switch module 21 is determined based on the second temperature information of the pot body 40 detected by the first switch module 10 and the preset second temperature threshold; the heating state of the heating device group is determined according to the first working state and the second working state; the problem of potential safety hazards in abnormal use in the related technology is solved; the dual temperature control structure formed by the first switch module 10 and the second switch module 21 is used to control the heating state of the heating device group, so as to improve the safety of use while ensuring the use temperature of the pot body 40.

[0048] The following is a detailed description of each of the above components:

[0049] In some of the embodiments, the dual temperature control device further includes a heating plate 50 disposed below the pot body 40;

[0050] The heating device group is disposed in the heating disk 50 , and the first switch module 10 is connected and fixed to the heating disk 50 .

[0051] Specifically, the heating device group can be arranged in layers in the heating plate 50, and the first switch module 10 is connected and fixed to the heating plate 50; for example, the heating device group includes a first heating element 31 and a second heating element 32, and the heating plate 50 is divided into two layers, the first heating element 31 is fixedly arranged in the first layer, and the second heating element 32 is fixedly arranged in the second layer. The heating device group can also be arranged in different areas in the heating plate 50; for example, the heating device group includes a first heating element 31 and a second heating element 32, and the heating plate 50 is divided into two areas by left and right, interval, etc., the first heating element 31 is fixedly arranged in the first area, and the second heating element 32 is fixedly arranged in the second area.

[0052] Through this embodiment, the heating device group is uniformly arranged in the heating plate 50, and the first switch module 10 is connected and fixed to the heating plate 50, so that the overall structure is more compact; and the pot body 40 is heated by the heating plate 50, so that the heating is more uniform.

[0053] In some embodiments, the dual temperature control device further includes a temperature sensing cup assembly; the temperature sensing cup assembly can be lifted and attached to the outside of the pot body 40, and the second switch module 21 is arranged in the temperature sensing cup assembly to sense the temperature of the pot body 40; the dual temperature control device further includes a heat preservation cover 60;

[0054] The heat-insulating cover 60 is fixedly disposed below the heating plate 50 .

[0055] Specifically, the temperature sensing cup assembly can be raised and lowered to fit on the outside of the pot body 40, and it can be close to the pot body 40. The second switch module 21 is set in the temperature sensing cup assembly to sense the temperature of the pot body 40, thereby ensuring the accuracy of the detection of the temperature of the pot body 40 (second temperature information).

[0056] The heat preservation cover 60 is fixedly arranged below the heating plate 50, and can concentrate the heat generated by the heating device group to the pot body 40, thereby improving the heating efficiency. The heat preservation cover 60, the heating plate 50 and the first switch module 10 are fixed together by fasteners such as screws, and the heat preservation cover 60 is arranged between the heating plate 50 and the first switch module 10, which can improve the detection accuracy of the first switch module 10.

[0057] In some of the embodiments, a mounting hole is provided in the heating plate 50; and the temperature sensing cup assembly is disposed in the mounting hole.

[0058] Specifically, the mounting hole can be opened at any position in the heating plate 50, and it runs through the entire heating plate 50. The temperature sensing cup assembly is arranged in the mounting hole. Since the heating plate 50 directly heats the pot body 40, the second switch module 21 in the temperature sensing cup assembly can detect the position of the directly heated pot body 40, thereby reducing the detection error caused by the temperature difference of the position of the pot body 40 and improving the detection accuracy.

[0059] Preferably, the mounting hole is opened at the center of the heating plate 50 , which can further reduce the detection error of the second switch module 21 .

[0060] In some of the embodiments, the temperature sensing cup assembly further includes an elastic element 22 and a shell 23;

[0061] The second switch module 21 is disposed in the housing 23 ; the elastic element 22 is disposed between the second switch module 21 and the heat preservation cover 60 .

[0062] Specifically, the elastic element 22 includes but is not limited to a leaf spring, a coil spring, etc. The elastic element 22 is disposed between the second switch module 21 and the heat preservation cover 60, and can make the temperature sensing cup assembly move up and down. During the slight vibration of the pot body 40, the temperature sensing cup assembly can always fit the bottom of the pot body 40, thereby ensuring the accuracy of the second temperature information collected by the second switch module 21 in the temperature sensing cup assembly.

[0063] The form of the first switch module 10 and the second switch module 21 (mechanical switch or electronic switch) will affect the overall structure of the dual temperature control device, which is explained below:

[0064] In some embodiments, the first switch module 10 and the second switch module 21 are both mechanical switches; the first switch module 10 is a first thermostat; and the second switch module 21 is a second thermostat.

[0065] Specifically, the first switch module 10 and the second switch module 21 are both mechanical switches, and the switching of their working states is determined by their own materials, structures, etc., without the intervention of additional devices. For example: the first switch module 10 is a first thermostat; the second switch module 21 is a second thermostat. The thermostat generally uses an NTC thermistor or a thermocouple as a temperature detection element. Its principle is: the NTC thermistor or thermocouple is designed into the corresponding circuit, and the NTC thermistor or thermocouple changes with the temperature. When the preset temperature threshold is reached, the switch module in the on state can be controlled to switch to the off state; thereby completing the working state switching of the switch module without the intervention of additional devices.

[0066] Through this embodiment, the thermostat is used as a switch module, which improves the stability and reliability of use.

[0067] In some embodiments, the dual temperature control device further includes a processor; the first switch module 10 and the second switch module 21 are both electronic switches;

[0068] The processor is connected to the first switch module 10 and the second switch module 21 respectively, and is used to control a first control state of the first switch module 10 and a second control state of the second switch module 21 .

[0069] Specifically, the first switch module 10 and the second switch module 21 are both electronic switches; the switching of their working states requires the intervention of the processor, and the relevant software programs set in the processor are all existing software programs. The temperature information detected by the first switch module 10 and the second switch module 21 will be transmitted to the processor, and the processor will determine whether the temperature information exceeds the corresponding temperature threshold. When the temperature information exceeds the corresponding temperature threshold, a disconnection signal is generated, so that the switch module switches the switch module in the on state to the disconnected state according to the disconnection signal, thereby completing the switching of the working state of the switch module.

[0070] Through this embodiment, a processor is provided to control the working states of the first switch module 10 and the second switch module 21, so that the dual temperature control device is applicable to more application scenarios.

[0071] Since the first switch module 10, the second switch module 21 and the heating device group are arranged in different ways (in series or in parallel), the process of determining the heating state of the heating device group according to the first working state and the second working state is also different, which is explained below:

[0072] In some embodiments, in combination Figure 3 and Figure 4 It is explained that the first switch module 10, the second switch module 21 and the heating device group are connected in series;

[0073] The first switch module 10 is used to put the first switch module 10 into a first disconnection state to stop the heating device group from heating when it is detected that the first temperature information of the heating device group exceeds a preset first temperature threshold;

[0074] The second switch module 21 is used to put the second switch module 21 into a second disconnection state to stop the heating device group from heating when it is detected that the second temperature information of the pot body 40 exceeds a preset second temperature threshold.

[0075] Specifically, the neutral line, the first switch module 10, the heating device group, the second switch module 21 and the live line are connected in series in sequence; the heating device group includes two parallel first heating elements 31 and second heating elements 32. The first switch module 10 is a first thermostat; the second switch module 21 is a second thermostat. In other embodiments, a fuse and a master control switch may be additionally provided; the fuse and the master control switch are connected in series between the second switch module 21 and the live line.

[0076] The working principle of the series connection is: the first thermostat and the second thermostat are closed and both are in the on state, and the heating device group is powered on to heat the pot body 40. During the cooking process, the pot body 40 vibrates on the heating plate 50, and the temperature sensing cup assembly is always attached to the bottom of the pot body 40 under the action of the spring element, ensuring the accuracy of the collected second temperature information. When it is detected that the second temperature information of the pot body 40 exceeds the preset second temperature threshold, the second thermostat is placed in the second disconnection state. Since the neutral line, the first thermostat, the heating device group, the second thermostat and the live line are connected in series in sequence, the second thermostat is in the second disconnection state, which will cause the heating device group to be powered off and stop heating. If the pot body 40 is taken away during the cooking process, the second temperature information collected by the second thermostat will always be lower than the preset second temperature threshold; the heating device group will continue to heat, causing the heating plate 50 to dry burn; when it is detected that the first temperature information of the heating device group exceeds the preset first temperature threshold, the first thermostat is placed in the first disconnection state. Since the neutral line, the first thermostat, the heating device group, the second thermostat and the live line are connected in series in sequence, the first thermostat is in the first disconnection state, which will cause the heating device group to be powered off and stop heating. After stopping heating, the temperature of the heating plate 50 will drop. When the detected second temperature information drops to the third preset temperature threshold (the reset temperature of the first thermostat and the temperature sensing cup assembly), the first thermostat and the second thermostat are both in the on state, and the heating device group starts working again. Generally, the first temperature threshold is higher than the second temperature threshold.

[0077] The use of the above-mentioned dual temperature control structure can effectively prevent the heating plate 50 from continuing to work excessively and dry-burning when the user takes away the pot body 40; it can also avoid the situation where a single temperature control structure can only detect the temperature of one position of the pot body 40 and the heating plate 50, but cannot take into account both prevention of dry-burning and precise temperature control, thereby improving the user experience.

[0078] In some embodiments, in combination Figure 3 and Figure 5 It is explained that the first switch module 10 is connected in series with the first heating element 31 to form a first series unit; the second switch module 21 is connected in series with the second heating element 32 to form a second series unit; when the first series unit and the second series unit are connected in parallel;

[0079] The second switch module 21 is used to put the second switch module 21 into a second disconnection state when detecting that the second temperature information of the pot body 40 exceeds a preset second temperature threshold, so that the second heating element 32 in the heating device group stops heating;

[0080] The first switch module 10 is used to put the first switch module 10 into a first disconnection state when it is detected that the first temperature information of the first heating element 31 of the heating device group exceeds a preset first temperature threshold, so that the first heating element 31 in the heating device group stops heating.

[0081] Specifically, the heating device group includes a first heating element 31 and a second heating element 32; the first heating element 31 is connected in series with the first switch module 10 to form a first series unit; the second heating element 32 is connected in series with the second switch module 21 to form a second series unit; the first series unit is connected in parallel with the second series unit. The first heating element 31 is connected to the neutral line and the second heating element 32 respectively; the first switch module 10 is connected to the second switch module 21 and the live line respectively. Among them, the first switch module 10 is the first thermostat; the second switch module 21 is the second thermostat. In other embodiments, a fuse and a master control switch can be additionally provided; the fuse and the master control switch are connected in series between the second switch module 21 and the live line.

[0082] Combination Figure 3 and Figure 5 , the working principle of parallel connection is: the first thermostat and the second thermostat are closed, both in the on-state, and the heating device group is powered on to heat the pot body 40. During the cooking process, the pot body 40 vibrates on the heating plate 50, and the temperature sensing cup assembly is always attached to the bottom of the pot body 40 under the action of the spring element, ensuring the accuracy of the collected second temperature information. When it is detected that the second temperature information of the pot body 40 exceeds the preset second temperature threshold, the second thermostat is placed in the second disconnection state. Because it is in parallel connection, the first thermostat controls the operation of the first heating element 31; the second thermostat controls the operation of the second heating element 32, which will cause the second heating element 32 in the heating device group to be powered off and stop heating. The first heating element 31 in the heating device group will continue to heat, and at this time the heating temperature of one heating element rises slowly or maintains the same temperature for a long time; when it is detected that the first temperature information of the heating device group exceeds the preset first temperature threshold, the first thermostat is placed in the first disconnection state. Because it is in parallel connection, the first thermostat is in the first disconnection state, which will cause the first heating element 31 in the heating device group to be powered off and stop heating. After stopping heating, the temperature of the heating plate 50 will drop. When the detected second temperature information drops to the third preset temperature threshold (the reset temperature of the first thermostat and the temperature sensing cup assembly), the first thermostat and the second thermostat are both in the on state, and the heating device group starts working again. Generally, the first temperature threshold is higher than the second temperature threshold.

[0083] If the pot body 40 is removed during the cooking process, the second temperature information collected by the second thermostat will always be lower than the preset second temperature threshold; the second heating device in the heating device group will continue to heat, causing the heating plate 50 to dry out; when it is detected that the first temperature information of the heating device group exceeds the preset first temperature threshold, the first thermostat is in the first disconnection state, which will cause the heating device group to be powered off and stop heating. The heating power of the second heating element 32 is much lower than that of the first heating device. When only the first heating device is heating, the temperature rises slowly or can only be maintained, preventing the heating plate 50 from dry out.

[0084] The use of the above-mentioned dual temperature control structure can effectively prevent the heating plate 50 from continuing to work excessively and dry-burning when the user takes away the pot body 40; it can also avoid the situation where a single temperature control structure can only detect the temperature of one position of the pot body 40 and the heating plate 50, but cannot take into account both prevention of dry-burning and precise temperature control, thereby improving the user experience.

[0085] This embodiment also provides an electric cooking appliance, comprising the dual temperature control device in the above embodiments.

[0086] The dual temperature control device in each of the above embodiments can be applied to electric cooking utensils, including but not limited to multifunctional cooking pots, electric hot pots, and small cooking pots.

[0087] The above-mentioned electric cooking appliance solves the problem of potential safety hazards in abnormal use in the related art. The dual temperature control structure formed by the first switch module 10 and the second switch module 21 is used to control the heating state of the heating device group to improve the safety of use while ensuring the use temperature of the pot body 40.

[0088] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementation modes, and will not be repeated in this embodiment.

[0089] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0090] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0091] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

[0092] The term "embodiment" in this application refers to a specific feature, structure or characteristic described in conjunction with the embodiment that can be included in at least one embodiment of the present application. The appearance of this phrase in various locations in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is clearly or implicitly understood by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

[0093] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the attached claims.

Claims

1. A dual temperature control device, characterized in that: It includes a temperature control circuit and a pot body (40); The temperature control circuit comprises a first switch module (10), a second switch module (21) and a heating device group; The first switch module (10) is arranged correspondingly to the heating device group, and a first working state of the first switch module (10) is determined according to first temperature information of the heating device group detected by the first switch module (10) and a preset first temperature threshold; the second switch module (21) is arranged correspondingly to the pot body (40), and a second working state of the second switch module (21) is determined according to second temperature information of the pot body (40) detected by the second switch module (21) and a preset second temperature threshold; the heating device group is arranged below the pot body (40), and a heating state of the heating device group is determined according to the first working state and the second working state; The heating device group comprises at least one heating element, and the first switch module (10), the second switch module (21) and the heating element are connected in series; or, the heating device group comprises a first heating element (31) and a second heating element (32), the first switch module (10) and the first heating element (31) are connected in series to form a first series unit; the second switch module (21) and the second heating element (32) are connected in series to form a second series unit; the first series unit and the second series unit are connected in parallel.

2. The dual temperature control device according to claim 1, characterized in that: The dual temperature control device further comprises a heating plate (50) arranged below the pot body (40); The heating device group is arranged in the heating disk (50), and the first switch module (10) is connected and fixed to the heating disk (50).

3. The dual temperature control device according to claim 2, characterized in that: The dual temperature control device also includes a heat preservation cover (60); The heat preservation cover (60) is fixedly arranged below the heating plate (50); The dual temperature control device also includes a temperature sensing cup assembly; the temperature sensing cup assembly can be lifted and attached to the outside of the pot body (40); The second switch module (21) is arranged in the temperature sensing cup assembly to sense the temperature of the pot body (40); The temperature sensing cup assembly comprises an elastic element (22) and a shell (23); The second switch module (21) is arranged in the housing (23); and the elastic element (22) is arranged between the second switch module (21) and the heat preservation cover (60).

4. The dual temperature control device according to claim 3, characterized in that: The heating plate (50) is provided with a mounting hole; the temperature sensing cup assembly is arranged in the mounting hole.

5. The dual temperature control device according to claim 1, characterized in that: A first temperature threshold of the first switch module is the same as or different from a second temperature threshold of the second switch module.

6. The dual temperature control device according to claim 1, characterized in that: The first switch module (10) and the second switch module (21) are both mechanical switches; the first switch module (10) is a first temperature controller; and the second switch module (21) is a second temperature controller.

7. The dual temperature control device according to claim 1, characterized in that: The dual temperature control device further comprises a processor; the first switch module (10) and the second switch module (21) are both electronic switches; The processor is connected to the first switch module (10) and the second switch module (21) respectively, and is used to control a first control state of the first switch module (10) and a second control state of the second switch module (21).

8. The dual temperature control device according to any one of claims 1 to 7, characterized in that: When the first switch module (10), the second switch module (21) and the heating device group are connected in series; The first switch module (10) is used to place the first switch module (10) in a first disconnection state when detecting that the first temperature information of the heating device group exceeds a preset first temperature threshold, so that the heating device group stops heating; The second switch module (21) is used to place the second switch module (21) in a second disconnection state when detecting that the second temperature information of the pot body (40) exceeds a preset second temperature threshold, so that the heating device group stops heating.

9. The dual temperature control device according to any one of claims 1 to 7, characterized in that: The first switch module (10) is connected in series with the first heating element (31) to form a first series unit; the second switch module (21) is connected in series with the second heating element (32) to form a second series unit; when the first series unit and the second series unit are connected in parallel; The second switch module (21) is used to place the second switch module (21) in a second disconnection state when detecting that the second temperature information of the pot body (40) exceeds a preset second temperature threshold, so that the second heating element (32) in the heating device group stops heating; The first switch module (10) is used to place the first switch module (10) in a first disconnection state when detecting that the first temperature information of the first heating element (31) of the heating device group exceeds a preset first temperature threshold, so that the first heating element (31) in the heating device group stops heating.

10. An electric cooking appliance, characterized in that: It comprises a dual temperature control device as claimed in any one of claims 1 to 9.

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