Cooker, control method and control device for preventing dry burning of cooker

Abstract

The present application relates to the technical field of stoves, and discloses a stove, comprising: a contact portion, which is arranged on the stove; an electromagnetic induction detection device, which is arranged on the contact portion, and is used to contact with a pot placed on the stove, and is used to detect the electromagnetic induction of the pot. By arranging the contact portion and the electromagnetic induction device on the stove, the electromagnetic induction of the pot placed on the stove is detected, so as to determine the material of the pot, and determine the condition for controlling the stove to stop heating according to the material of the pot. When the temperature information of the pot meets the condition, the stove is controlled to stop heating to prevent the problem of dry burning. Since pots of different materials have different anti-dry burning thresholds, accurate anti-dry burning of pots of different materials is achieved, which simplifies the determination method and effectively reduces the misjudgment rate of anti-dry burning. The present application also discloses a control method and a control device for stove anti-dry burning.

Description

Technical Field

[0001] The present application relates to the technical field of stoves, for example, to a stove, a control method and a control device for preventing dry burning of the stove. Background Art

[0002] Dry burning refers to heating an empty pot for a long time. Due to the long heating time, the pot will dry out or burn. It is a common safety hazard in the kitchen. Dry burning of pots will cause the pots to change color and deform. In serious cases, it may even cause a fire. At present, the anti-dry burning function is common in household stoves. By automatically shutting down the stove when the pot reaches the set threshold, the anti-dry burning control of the pot is realized, which plays a role in protecting the pot.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0004] In the related art, by comparing with a pre-set single temperature threshold, dry burning is determined to have occurred when the bottom temperature of the pot is higher than the threshold. This technique is more suitable for pots made of metal with good thermal conductivity. For pots with poor thermal conductivity, such as casserole pots or ceramic pots, due to their poor thermal conductivity, there is a large error in obtaining the bottom temperature of the pot. Therefore, it is not suitable for anti-dry burning control only by temperature. Summary of the invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] The embodiments of the present disclosure provide a stove, a control method and a control device for preventing dry burning of the stove, so as to solve the technical problems in the related art that the error is large and the anti-dry burning effect is limited when the anti-dry burning control of non-metallic cookware is performed only by temperature conditions.

[0007] In some embodiments, the cooker includes a contact portion disposed on the cooker; an electromagnetic induction device disposed on the contact portion and configured to contact a pot placed on the cooker for detecting the electromagnetic induction condition of the pot.

[0008] In some embodiments, the control method for preventing dry burning of the above-mentioned stove includes: detecting the electromagnetic induction condition of the cookware, and determining a temperature threshold according to the electromagnetic induction detection result; when the temperature of the cookware is greater than the temperature threshold, controlling the stove to stop heating; wherein the detection result has a corresponding relationship with the material of the cookware.

[0009] In some embodiments, the control device for preventing dry burning of the above-mentioned stove includes a processor and a memory storing program instructions, and the processor is configured to execute the above-mentioned control method when executing the program instructions.

[0010] The cooker, control method and control device for preventing dry burning of the cooker provided by the embodiments of the present disclosure can achieve the following technical effects:

[0011] By setting a contact part and an electromagnetic induction device on the stove, the electromagnetic induction of the pot placed on the stove is detected, so as to determine the material of the pot, and determine the temperature threshold for controlling the stove to stop heating according to the material of the pot. When the temperature of the pot is greater than the temperature threshold, the stove is controlled to stop heating to prevent dry burning. Since pots of different materials have different anti-dry burning thresholds, accurate anti-dry burning of pots of different materials is achieved, which simplifies the judgment method and effectively reduces the misjudgment rate of anti-dry burning.

[0012] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0014] Figure 1 is a structural schematic diagram of a stove provided by an embodiment of the present disclosure;

[0015] Figure 2 is a partial structural schematic diagram of a stove provided by an embodiment of the present disclosure;

[0016] Figure 3 is a schematic diagram of a control method for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0017] Figure 4 is a schematic diagram of another control method for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0018] Figure 5 is a schematic diagram of a control device for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0019] Figure 6 is a schematic diagram of another control device for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0020] Figure 7 It is a schematic diagram of another control device for preventing dry burning of a stove provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0021] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0022] The present disclosure provides a stove, such as Figure 1 As shown, it includes a contact portion 1, which is arranged on the cooker; and an electromagnetic induction device 2, which is arranged on the electromagnetic induction device contact portion 1 and is configured to contact the pot placed on the cooker, for detecting the electromagnetic induction condition of the electromagnetic induction device pot.

[0023] By providing a contact portion 1 with an electromagnetic induction device 2 on the cooker, the electromagnetic induction device 2 can detect the material of the cooker according to the electromagnetic induction situation during the contact between the cooker and the cooker, so that the cooker can set a corresponding anti-dry-burning program according to the material of the cooker to determine the conditions for controlling the cooker to stop heating. When the temperature information of the cooker meets the conditions, the cooker is controlled to stop heating to prevent the dry-burning problem. Since cookers of different materials have different anti-dry-burning thresholds, accurate anti-dry-burning of cookers of different materials is achieved according to temperature information, which simplifies the determination method and effectively reduces the misjudgment rate of anti-dry-burning.

[0024] Here, the contact part 1 can be a part of the stove itself that contacts the pot, such as a burner, a fire cover, etc., or a part that is detachably connected to the stove, such as a stove rack, a pot rack, a pot rack, etc. The electromagnetic induction device 2 is arranged on the contact part 1, and in the process of contacting with the pot, the electromagnetic induction condition of the pot is detected and compared with a preset value to distinguish the material of the pot. Among them, the electromagnetic induction device 2 can include a power supply and a display screen, and can also be powered and displayed through the power supply and display screen of the stove.

[0025] Optional, such as Figure 2As shown, the electromagnetic induction device 2 includes a transmitting coil 21 and a receiving coil 22. Among them, the transmitting coil 21, as an outer ring coil, includes a coil wound by a wire. When the transmitting coil 21 is energized, the current is emitted along the wire in an alternating direction, and changes thousands of times per second. Optionally, an alternating current is passed through the transmitting coil 21. The receiving coil 22, as an inner ring coil, includes another coil wound by a wire, which is used to collect the frequency of the magnetic field emitted by the pot. Here, the current flowing through the transmitting coil 21 will generate an electromagnetic field, and the polarity of the magnetic field is perpendicular to the plane where the transmitting coil is located. Whenever the current changes direction, the polarity of the magnetic field will change accordingly; as the magnetic field changes repeatedly, it acts on the pot in contact, and another magnetic field is generated at the bottom of the pot, and its magnetic field polarity is opposite to the magnetic field polarity generated by the transmitting coil 21, and acts on the receiving coil 22. The receiving coil 22 generates a feedback current, and the material of the pot can be determined according to the intensity of the current. For example, when the current intensity of the receiving coil 22 is within the first range, the material of the pot is determined to be the first material; when the current intensity of the receiving coil 22 is within the second range, the material of the pot is determined to be the second material. Optionally, the contact part 1 of the electromagnetic induction device is arranged in parallel with the bottom of the pot; optionally, the contact part 1 of the electromagnetic induction device is arranged horizontally. Optionally, the transmitting coil 21 of the electromagnetic induction device is arranged in parallel with the bottom of the electromagnetic induction device pot; optionally, the receiving coil 22 of the electromagnetic induction device is arranged in parallel with the bottom of the electromagnetic induction device pot. Further, the receiving coil 22 of the electromagnetic induction device is arranged directly below the bottom of the electromagnetic induction device pot. Optionally, the contact part 1 includes a stove head of the stove; optionally, the contact part 1 includes an outer fire cover 11 of the stove head, and the electromagnetic induction device 2 is arranged on the side where the outer fire cover 11 of the electromagnetic induction device contacts the pot. The outer fire cover of the electromagnetic induction device is a circular ring structure, and the transmitting coil 21 and the receiving coil 22 of the electromagnetic induction device are arranged horizontally on the side of the outer fire cover 11 of the electromagnetic induction device close to the pot. In this way, the electromagnetic induction device can generate a clear and stable magnetic field when in contact with the cookware, which is used to determine the material of the cookware.

[0026] Optionally, the contact portion 1 may also include a pot rack. The pot rack may be fixedly mounted on the stove or detachably connected to the stove, and the top of the pot rack is used to place the pot. Optionally, the above-mentioned transmitting coil 21 and receiving coil 22 are arranged on the pot rack. In this way, since the pot rack and the pot are bound to come into contact, by arranging the electromagnetic detection device 2 on the pot rack, the material of the pot can be determined by electromagnetic induction during the contact with the pot, so that the stove can set the corresponding anti-dry burning program according to the material of the pot to determine the conditions for controlling the stove to stop heating. When the temperature information of the pot meets the conditions, the stove is controlled to stop heating to prevent the problem of dry burning. Since pots of different materials have different anti-dry burning thresholds, accurate anti-dry burning of pots of different materials is achieved, which simplifies the determination method and effectively reduces the misjudgment rate of anti-dry burning.

[0027] The embodiment of the present disclosure provides a control method for preventing dry burning of the above-mentioned stove, such as Figure 3 As shown, including:

[0028] Step S100, detecting the electromagnetic induction of the cookware, and determining the temperature threshold according to the electromagnetic induction detection result. The detection result has a corresponding relationship with the material of the cookware.

[0029] Here, the detection result refers to the detection of the electromagnetic induction of the cooker when the electromagnetic induction device provided on the contact part of the cooker contacts the cooker. The electromagnetic induction phenomenon varies according to the material of the cooker, so the detection result of the electromagnetic induction is related to the material of the cooker. The temperature threshold for preventing dry burning is determined according to the detection result. The temperature threshold is used to indicate the maximum temperature critical value of the temperature range that can maintain the cooker in a good use state during the cooking process, and cookers of different materials have different threshold setting ranges, so the value of the threshold has a corresponding relationship with the material of the cooker.

[0030] Step S110, when the temperature of the cooker is greater than the temperature threshold, the cooker is controlled to stop heating.

[0031] The temperature information of the pot may include the temperature of the bottom of the pot, its heating rate based on the relationship between temperature and time, and the rate of change of the heating rate. The temperature parameter may be obtained through a temperature detection device arranged on the stove or the bottom of the pot, and the time parameter may be obtained through a timer on the stove or the pot. By obtaining the temperature of the pot, when the temperature of the pot, such as the temperature of the bottom of the pot, is greater than the temperature threshold, the pot is at risk of dry burning. At this time, the stove is controlled to stop heating, thereby realizing accurate dry burning prevention of the pot.

[0032] The control method for preventing dry burning of a stove provided by the embodiment of the present disclosure is adopted. By setting a contact part and an electromagnetic induction device on the stove, the electromagnetic induction of the pot placed on the stove is detected, so as to determine the material of the pot, and determine the temperature threshold for controlling the stove to stop heating according to the material of the pot. When the temperature of the pot is greater than the temperature threshold, the stove is controlled to stop heating to prevent the problem of dry burning. Since pots of different materials have different anti-dry burning thresholds, accurate anti-dry burning of pots of different materials is achieved, which simplifies the determination method and effectively reduces the misjudgment rate of anti-dry burning.

[0033] In some embodiments, determining the temperature threshold according to the electromagnetic induction detection result includes: determining the material of the cookware according to the electromagnetic induction detection result; and determining the temperature threshold according to the material of the cookware. Cookware of different materials has different electromagnetic induction conditions, and different cookware materials are distinguished according to the detection result of the electromagnetic induction device, so as to determine the corresponding threshold data according to the material.

[0034] Optionally, determining the material of the cookware according to the electromagnetic induction detection result includes: controlling the electromagnetic induction device to generate a first magnetic field; after the electromagnetic induction device contacts the cookware, the cookware generates a second magnetic field according to the first magnetic field; and determining the material of the cookware according to the intensity of feedback current generated by the second magnetic field acting on the electromagnetic induction device.

[0035] Here, the first magnetic field refers to the electromagnetic field generated by the transmitting coil of the electromagnetic induction device after the alternating current is passed through it. The polarity of the magnetic field is perpendicular to the plane where the transmitting coil is located. Whenever the current changes direction, the polarity of the magnetic field will change accordingly; as the magnetic field changes repeatedly, it acts on the contacted pot. The second magnetic field refers to another magnetic field generated at the bottom of the pot after the pot contacts the first magnetic field. The polarity of the magnetic field is opposite to that of the magnetic field generated by the transmitting coil, and acts on the receiving coil of the electromagnetic induction device. According to the second magnetic field, the receiving coil generates a feedback current, and the material of the pot can be determined according to the intensity of the current. For example, when the current intensity of the receiving coil is within the first range, the material of the pot is determined to be the first material; when the current intensity of the receiving coil is within the second range, the material of the pot is determined to be the second material.

[0036] Optionally, the method of determining the material of the cookware according to the electromagnetic induction detection result includes: when the feedback current of the electromagnetic induction detection result is within the first current intensity interval, the material of the cookware is a metal material; or when the feedback current intensity of the electromagnetic induction detection result is within the second current intensity interval, the material of the cookware is a non-metal material. In this way, when the cookware is subjected to electromagnetic induction detection by the electromagnetic induction detection device, the material of the cookware can be determined according to the detection result. When the detection result is not within the first current intensity interval or the second current intensity interval, the default material of the system is used as the cookware material to achieve dry burning prevention for cookware of different materials. In this embodiment, the first current intensity interval refers to the critical range of the feedback current intensity of the receiving coil in the detection result when the metal material is subjected to electromagnetic induction detection. The second current intensity interval refers to the critical range of the feedback current intensity of the receiving coil in the detection result when the non-metal material is subjected to electromagnetic induction detection. According to the properties of metal and non-metal materials, the current intensity corresponding to the first current intensity interval is higher than the current intensity corresponding to the second current intensity interval. Optionally, only whether the feedback current intensity is within the first current intensity interval is determined based on the electromagnetic induction detection result. When the feedback current intensity is within the first current intensity interval, the material of the pot is determined to be a metal material; when it is not within the first current intensity interval, it is inferred that the material of the pot is a non-metallic material. In other embodiments of the present application, it is also possible to determine whether the current intensity is within the second current intensity interval based on the electromagnetic induction detection result, and the material of the pot with a detection result outside the interval is inferred to be a metal material.

[0037] Optionally, the material of the cookware is determined according to the electromagnetic induction detection result, including: when the feedback current intensity of the electromagnetic induction detection result is within a first current intensity interval, the material of the cookware is a metal material; and when the feedback current intensity of the electromagnetic induction detection result is within a second current intensity interval, the material of the cookware is a non-metal material. In this way, different cookware materials can be determined according to different electromagnetic induction detection results, and dry-burn prevention of cookware of different materials can be achieved.

[0038] In some embodiments, the threshold value is determined according to the material of the pot, including: when the material of the pot is metal, the threshold value is a first setting value; or when the material of the pot is non-metallic, the threshold value is a second setting value; wherein the first setting value is less than the second setting value. In this way, when the threshold value is determined according to the material of the pot, only dry-burn prevention is implemented for a single pot material, and pots of other materials can be set with a default threshold value for dry-burn prevention.

[0039] Optionally, the threshold value is determined according to the material of the pot, including: when the material of the pot is metal, the threshold value is a first set value; and when the material of the pot is non-metal, the threshold value is a second set value; wherein the first set value is less than the second set value. In this way, when the threshold value is determined according to the material of the pot, the anti-dry-burning threshold value can be set for metal pots and non-metal pots, and the default threshold value can be set for anti-dry-burning for pots of other materials.

[0040] Here, the first setting value is used to indicate the maximum temperature critical value of the temperature range in which metal cookware can maintain a good use state during the cooking process; the second setting value is used to indicate the maximum temperature critical value of the temperature range in which non-metal cookware can maintain a good use state during the cooking process.

[0041] During the implementation process, the material of the cookware is determined according to the electromagnetic induction detection results within a preset time period or a preset temperature range. When the feedback current intensity of the electromagnetic induction detection results is within the first current intensity range, the material of the cookware is metal, and the first set value corresponding to the metal material is determined to perform an anti-dry-burn warning; when the feedback current intensity of the electromagnetic induction detection results is within the second current intensity range, the material of the cookware is non-metallic, and the second set value corresponding to the non-metallic material is determined to perform an anti-dry-burn warning. In this way, the material of the cookware is distinguished through the electromagnetic induction detection results, which facilitates the determination of the conditions for controlling the stove to stop heating according to the material of the cookware, and realizes accurate dry-burn prevention of cookware of different materials according to temperature information, which simplifies the determination method and effectively reduces the misjudgment rate of dry-burn prevention.

[0042] In this embodiment, the value of the second set value is set to 400 degrees. When the temperature of the pot is greater than 400 degrees, the stove is controlled to stop heating, which can prevent the non-metallic pot from dry burning. The value of the first set value is set to 300 degrees. When the temperature of the pot is greater than 300 degrees, the stove is controlled to stop heating, which can prevent the metal pot from dry burning. In other embodiments of the present invention, the threshold value can also be set according to the temperature information of the pot. In this way, after determining the material of the pot according to the electromagnetic induction detection result, the anti-dry burning threshold is determined according to the material of the pot. When the temperature information of the pot is greater than the anti-dry burning threshold, the stove is controlled to stop heating to prevent the dry burning problem. Since pots of different materials have different anti-dry burning thresholds, accurate anti-dry burning of pots of different materials is achieved according to temperature information, which simplifies the determination method and effectively reduces the misjudgment rate of anti-dry burning.

[0043] In some embodiments, when the material of the cookware is metal, it also includes: when the heating rate of the cookware is less than a first set rate and the rate of change of the heating rate is less than 0, adding a first compensation value to the first set value.

[0044] Here, the first compensation value is used to express the difference between the maximum temperature critical value of the temperature range in which the metal cookware can maintain a good use state under a specific cooking state and the first set value. The heating rate of the cookware is determined based on the heating range and heating time of the cookware. For example, the first heating range [T1, T2] is detected and obtained within the first measurement period t1, then the heating rate k1 = (T2-T1) / t1; it can also be the time t2 required for the cookware temperature to rise from T2 to T3, then the heating rate k2 = (T3-T2) / t2. Under this condition, the rate of change of the heating rate of the cooker is less than 0. Optionally, the rate of change of the heating rate is negative, close to 0 and does not fluctuate much, indicating that the heating speed of the cooker has become slower and slower. When the heating rate of the cooker is also less than the third threshold, it indicates that the temperature rise change of the cooker has reached the limit. In this way, it can be further determined that the current metal cooker is in a waterless cooking dry-burning state. At this time, a first compensation value is added to the first set value. When the temperature of the cooker is greater than this value, the cooker is controlled to stop heating, thereby preventing the metal cooker from dry-burning.

[0045] Optionally, when the material of the cookware is metal, it also includes: when the heating rate of the cookware is greater than a second set rate and the rate of change of the heating rate is greater than or equal to 0, adding a second compensation value to the first set value; wherein the second set rate has a corresponding relationship with the firepower level of the stove.

[0046] Here, the second compensation value is used to represent the difference between the maximum temperature critical value of the temperature range in which a cookware made of a metal material can maintain a good service state under another specific cooking state and the first set value. The second set rate is used to represent the heating rate of a cookware made of a certain material in the normal cooking state under the corresponding firepower level. When the heating rate of the cookware is greater than the second set rate, it indicates that the heating speed of the cookware is in a relatively fast state, greater than the heating rate of the corresponding normal cookware cooking state under this firepower level, and there may be a risk of dry burning. When the change rate of the heating rate of the cookware is greater than or equal to 0, it indicates that the cookware still maintains a relatively high heating speed, and its heating rate gradually increases over time or continuously maintains a certain heating rate. Further, it can be inferred that the current metal cookware is in a dry burning state during water cooking. At this time, the second compensation value is added to the first set value. When the temperature of the cookware is greater than this value, the cooking appliance is controlled to stop heating, which can prevent the metal cookware from dry burning.

[0047] Optionally, the higher the firepower of the cooking appliance, the larger the value of the corresponding second set rate. Since the second set rate has a corresponding relationship with the firepower level, which represents the heating rate of a cookware made of a certain material in the normal cooking state under the corresponding firepower level, the value of the second set rate increases accordingly with the increase of the firepower level. Here, the firepower level can be obtained through a firepower detection sensor. The firepower detection sensor can be a rotatable potentiometer installed on the switch knob column of the cooking appliance. By sensing the change in the resistance, voltage or current of the potentiometer, the firepower adjustment gear of the cooking appliance is obtained, and further the firepower size of the cooking appliance is judged. In another embodiment, the firepower detection sensor can also be a gas flow rate sensing device installed on the gas pipeline, and the firepower size of the cooking appliance is judged by sensing the flow rate of the gas. In yet another embodiment, the firepower detection sensor can be a gas pressure sensing device installed on the gas pipeline, and the firepower size of the cooking appliance is judged by sensing the gas pressure. Of course, the cooking appliance can also be an induction cooker. At this time, the firepower of the induction cooker can be judged by detecting the magnitude of the current supplied to the coil or the firepower gear; the firepower can be divided into multiple gears, such as gears 1, 2, 3, 4, and 5. In one embodiment, the firepower is divided into 3 gears, gear 1 is low fire, gear 2 is medium fire, and gear 3 is high fire. The first preset firepower is P1 and the second preset firepower is P2. For example, when the detected firepower P < P1, it is judged that the current firepower level is low fire. When the detected firepower P1 ≤ P ≤ P2, it is judged that the current firepower level is medium fire. When the detected firepower P > P2, it is judged that the current firepower level is high fire. According to the current firepower level, the corresponding value of the second set rate can be confirmed, which is used to judge the cooking state of the cookware, so as to determine the threshold value for preventing the cookware from dry burning.

[0048] In this way, after determining that the material of the pot is metal according to the electromagnetic induction detection result, the current cooking state of the pot can be judged by obtaining the heating rate information in the pot temperature information to further determine the anti-dry boiling threshold. Optionally, the cooking state may include water cooking or waterless cooking, and the heating rate of the pot is different in different cooking states.

[0049] Combination Figure 4 As shown, the embodiment of the present disclosure provides another control method for preventing dry burning of a stove, comprising:

[0050] Step S200, detecting the electromagnetic induction condition of the cookware, and determining a temperature threshold value according to the electromagnetic induction detection result;

[0051] Step S210, when the temperature of the pot reaches a preset temperature, detecting the temperature information of the pot;

[0052] Step S220: When the temperature of the cookware is greater than the temperature threshold, the cooker is controlled to stop heating.

[0053] Here, the preset temperature is used to express the temperature range in which some or all of the materials of the pot are in a safe cooking state during the cooking process. Optionally, the preset temperature range is 140 to 230 degrees. When cooking starts, when the temperature of the pot, such as the temperature of the bottom of the pot, is within the preset temperature range, the pot is in a state where heating and cooking have begun and there is no danger of dry burning. At this time, the anti-dry burning function is activated and its temperature information is obtained. Compared with the solution of continuously detecting the relationship between the temperature and time of the pot, it can shorten the data detection time and reduce redundant data and the storage space required. Optionally, after cooking starts, the current pot temperature can be detected regularly by setting an interval time period to determine whether to turn on the anti-dry burning function and detect the temperature information of the pot.

[0054] In some embodiments, the above control method for preventing dry burning further includes: when the temperature of the pot reaches a third set value, controlling the stove to stop heating. The third set value is used to express the temperature at which some or all of the materials of the pot are at risk of dry burning. When the pot reaches this temperature, continuing to heat it may cause the pot to dry burn or even explode. Optionally, the third set value is greater than the above second set value; optionally, the third set value is assigned to 500 degrees. When the temperature of the pot is greater than 500 degrees, the stove is controlled to stop heating, which can prevent the pot from dry burning. In this way, when the threshold cannot be set according to the material of the pot, the anti-dry burning protection of the pot is achieved by setting the third set value.

[0055] Combination Figure 5As shown, the embodiment of the present disclosure provides a control device for preventing dry burning of a cooker, comprising a detection module 31 and a control module 32. The detection module 31 is configured to detect the electromagnetic induction of the cooker and determine a temperature threshold according to the electromagnetic induction detection result; the control module 32 is configured to control the cooker to stop heating when the temperature of the cooker is greater than the temperature threshold; wherein the detection result has a corresponding relationship with the material of the cooker.

[0056] The device for preventing dry burning of a stove provided by the embodiment of the present disclosure can determine the material of the pot according to the electromagnetic induction detection result of the pot, and determine the temperature threshold for controlling the stove to stop heating according to the material of the pot. When the temperature of the pot is greater than the temperature threshold, the stove is controlled to stop heating to prevent the problem of dry burning. Since pots of different materials have different dry burning prevention thresholds, accurate dry burning prevention of pots of different materials is achieved, which simplifies the determination method and effectively reduces the false judgment rate of dry burning prevention.

[0057] Combination Figure 6 As shown, another control device for preventing dry burning of a stove provided by an embodiment of the present disclosure includes a detection module 41, an acquisition module 42 and a control module 43. The acquisition module 42 is configured to detect the temperature information of the pot when the temperature of the pot reaches a preset temperature.

[0058] A stove provided by an embodiment of the present disclosure includes the above-mentioned control device for preventing dry burning of the stove.

[0059] Combination Figure 7 As shown, the embodiment of the present disclosure provides a control device for preventing dry burning of a stove, including a processor 100 and a memory 101. Optionally, the device may also include a communication interface 102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other through the bus 103. The communication interface 102 may be used for information transmission. The processor 100 may call the logic instructions in the memory 101 to execute the control method for preventing dry burning of a stove in the above embodiment.

[0060] In addition, the logic instructions in the memory 101 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

[0061] The memory 101 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 100 executes the functional application and data processing by running the program instructions / modules stored in the memory 101, that is, the control method for preventing dry burning of the cooker in the above embodiment is implemented.

[0062] The memory 101 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 101 may include a high-speed random access memory and may also include a non-volatile memory.

[0063] The embodiment of the present disclosure provides a stove, comprising the above-mentioned control device for preventing dry burning of the stove. Optionally, the stove is also provided with a button for determining the type of the pot.

[0064] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned control method for preventing dry-burning of a stove.

[0065] An embodiment of the present disclosure provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the above-mentioned control method for preventing dry burning of a stove.

[0066] The computer-readable storage medium mentioned above may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0067] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method of the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, and other media that can store program codes, or a transient storage medium.

[0068] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0069] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0070] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0071] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A cooking appliance, characterized in that: include: A contact portion, disposed on the cooker; An electromagnetic induction device, arranged at the contact portion, for contacting the pot placed on the cooker, and for detecting the electromagnetic induction condition of the pot; The electromagnetic induction device includes a transmitting coil and a receiving coil; The transmitting coil is used as an outer ring coil, and an alternating current is passed through it to generate an electromagnetic field, which is used to interact with the pot in contact to generate another magnetic field at the bottom of the pot, which acts on the receiving coil; The receiving coil is used as an inner loop coil to collect the frequency of the magnetic field generated by the cookware to generate a feedback current. The material of the cookware is determined according to the intensity of the feedback current. When the feedback current intensity of the receiving coil is within the first range, the material of the cookware is determined to be the first material; when the feedback current intensity of the receiving coil is within the second range, the material of the cookware is determined to be the second material.

2. The cooker according to claim 1, characterized in that: The contact portion includes the outer fire cover of the cooker; and the electromagnetic induction device is arranged on the side where the outer fire cover contacts the cooker.

3. The cooker according to claim 1, characterized in that: The contact portion includes a pot support.

4. A control method for preventing dry burning of a stove according to any one of claims 1 to 3, characterized in that: include: Detect the electromagnetic induction of the cookware and determine the material of the cookware based on the electromagnetic induction test results; Determining a temperature threshold according to the material of the cookware; When the temperature of the pot is greater than the temperature threshold, the cooker is controlled to stop heating; Wherein, the detection result has a corresponding relationship with the material of the cookware; When the material of the cookware is metal, the threshold is a first set value; and / or When the material of the cookware is non-metallic material, the threshold is a second set value; Wherein, the first set value is less than the second set value; When the material of the cookware is metal, the method further includes: when the heating rate of the cookware is greater than a second set rate and the rate of change of the heating rate is greater than or equal to 0, adding a second compensation value to the first set value; Among them, the second set rate has a corresponding relationship with the fire power of the stove; the second compensation value is used to express the difference between the maximum temperature critical value of the temperature range in which the metal pot can maintain a good use state when cooking with water and the first set value.

5. The control method according to claim 4, characterized in that: Determine the material of the cookware based on the electromagnetic induction test results, including: Controlling the electromagnetic induction device to generate a first magnetic field; After the electromagnetic induction device comes into contact with the cookware, the cookware generates a second magnetic field according to the first magnetic field; The material of the cookware is determined according to the intensity of the feedback current generated by the second magnetic field acting on the electromagnetic induction device.

6. The control method according to claim 4, characterized in that: The method of determining the material of the cookware according to the electromagnetic induction detection result comprises: When the feedback current of the electromagnetic induction detection result is within the first current intensity range, the material of the cookware is metal; and / or When the feedback current intensity of the electromagnetic induction detection result is within the second current intensity range, the material of the cookware is non-metallic material.

7. The control method according to any one of claims 4 to 6, characterized in that: Also includes: When the temperature of the pot reaches the preset temperature, the temperature information of the pot is detected.

8. A control device for preventing dry burning of a stove according to any one of claims 1 to 3, characterized in that: The method comprises a processor and a memory storing program instructions, wherein the processor is configured to execute the method according to any one of claims 4 to 7 when executing the program instructions.

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