Control method and device for preventing dry burning of kitchen range, kitchen range and computer readable storage medium

Abstract

The invention relates to the technical field of intelligent household appliances, and discloses a kitchen range, which comprises an inner ring fire cover, an outer ring fire cover, an outer ring fire cover, an inner ring fire cover, a gas inlet pipe and a gas outlet pipe, the heat-absorbing temperature-changing module extends into the circulation space from the lower part of the inner ring fire cover, and the top of the heat-absorbing temperature-changing module is lower than the upper end of the inner ring fire cover; the heat absorption temperature change module is used for absorbing heat of the environment temperature space and generating temperature change; and the control module is connected with the heat absorption temperature change module and is used for carrying out dry burning judgment according to the temperature change condition of the heat absorption temperature change module. The temperature sensing component is arranged to absorb heat of the circulation space formed by the area below the pot bottom and the area in the center of the inner ring fire cover to reflect the temperature change condition of the pot bottom, the top of the temperature sensing component is lower than the upper end of the inner ring fire cover, non-contact temperature measurement is achieved, faults caused by high temperature are not likely to happen, and the pot bottom temperature measuring device is suitable for various pot bottom forms. The invention further discloses a control method and a control device for preventing dry burning of the stove and a computer readable storage medium.

Description

Technical Field

[0001] The present application relates to the technical field of smart home appliances, for example, to a control method and device for preventing dry burning of a stove, a stove, and a computer-readable storage medium. 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, and in serious cases, it may even cause a fire. At present, anti-dry burning functions are 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 achieved, which plays a role in protecting the pot. However, cooking is a complex process. The type of pot, cooking mode, firepower, and the amount of ingredients in the pot will all affect the judgment of dry burning.

[0003] In order to improve the accuracy of dry burning judgment, a gas stove is provided in the related art, including a stove panel and a pot rack arranged on the stove panel, an inner ring fire cover and an outer ring fire cover are arranged on the stove panel, and the top of the anti-dry burning temperature sensing probe is arranged higher than the top of the pot rack. Temperature data is obtained according to the temperature sensing element of the temperature sensing probe, and then the anti-dry burning threshold is determined. When the temperature data is higher than the anti-dry burning threshold, the dry burning protection gas is started, which can greatly reduce the anti-dry burning misjudgment and realize the accurate temperature measurement of the pot bottom.

[0004] 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:

[0005] Since the temperature probe directly contacts the bottom of the pot to measure the temperature, it is easy to cause damage to the temperature probe. In addition, the temperature probe has requirements for the pot. If the bottom of the pot is uneven or not in close contact with the temperature probe, the temperature probe will cause inaccurate detection, which may easily lead to misjudgment of the cooking status. The actual cooking status is inconsistent with the judgment result, resulting in limited anti-dry burning effect.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] 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 components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a control method and device for preventing dry burning of a stove, a stove, and a computer-readable storage medium, so as to improve the accuracy of detecting the temperature of a pot bottom.

[0009] In some embodiments, the stove includes: an inner ring fire cover, the area in the center of the inner ring fire cover is suitable for forming a circulation space with the bottom of the pot placed on the stove; a heat absorption temperature change module, which extends from the bottom of the inner ring fire cover to the circulation space, and the top is lower than the upper end of the inner ring fire cover; the heat absorption temperature change module is used to absorb the heat of the circulating temperature space and change the temperature; a control module is connected to the heat absorption temperature change module and is used to judge whether it is dry burning according to the temperature change of the heat absorption temperature change module.

[0010] Optionally, the inner ring fire cover further comprises: a fire stop ring, which is arranged at the upper end of the inner ring fire cover; and the top of the heat absorption and temperature change module is lower than the lower end of the fire stop ring.

[0011] In some embodiments, the control method for preventing dry burning of the above-mentioned stove includes: obtaining temperature information of the heat absorption and temperature change module; determining the cooking stage of the pot according to the safe cooking parameter range of the temperature information; and determining the corresponding anti-dry burning strategy according to the cooking stage of the pot.

[0012] Optionally, according to the cooking stage of the cookware, a corresponding anti-dry-burning strategy is determined, including:

[0013] If the pot is dry-burning during the cooking stage, control the cooker to reduce the fire;

[0014] When the cooking stage of the pot indicates that dry burning does not occur, obtaining a dry burning condition corresponding to the current fire power of the stove;

[0015] If the temperature information meets the dry burning conditions, reduce the stove fire.

[0016] Optionally, obtaining a dry burning condition corresponding to the current stove firepower includes:

[0017] Obtain the current stove firepower and determine the firepower adjustment factor k0 which is positively correlated with the stove firepower;

[0018] The heating rates of n consecutive effective temperatures all satisfy ΔT n >k0*ΔT, which is determined as dry burning condition;

[0019] Where, ΔT n is the heating rate of the nth effective temperature collected before the current moment in the temperature information, and ΔT is the heating rate of the heat absorption temperature changing module for the first set time before the current moment in the temperature information.

[0020] Optionally, determining the cooking stage of the cookware according to the safe cooking parameter interval in which the temperature information is located includes:

[0021] In a n When <δ1, the cooking stage corresponding to the pot is the first stage;

[0022] When δ1≤a n When ≤δ2, the cooking stage corresponding to the pot is the second stage;

[0023] In a n >δ2, the cooking stage corresponding to the pot is the third stage;

[0024] Among them, a n is the rate of change of the heating rate of the nth effective temperature collected before the current moment in the temperature information, δ1 is the first safety cooking parameter, δ2 is the second safety cooking parameter, δ1<0<δ2; the first stage, the second stage, and the third stage are arranged in order from the beginning to the end according to the cooking period.

[0025] Optionally, before determining the current cooking stage of the cookware according to the safe cooking parameter interval in which the temperature change information is located, the method further includes: obtaining the stove firepower and safe cooking parameters; adjusting the safe cooking parameters according to the stove firepower, and forming the adjusted safe cooking parameters into a safe cooking parameter interval.

[0026] In some embodiments, the control device for preventing dry-burning of the above-mentioned stove includes: a temperature detection module, configured to obtain temperature information of the heat absorption and temperature change module; a control module, configured to determine the cooking stage of the cookware according to the safe cooking parameter interval where the temperature information is located; and an execution module, configured to determine the corresponding anti-dry-burning strategy according to the cooking stage of the cookware.

[0027] In some embodiments, the control device for preventing dry burning of the stove comprises a processor and a memory storing program instructions, and the processor is configured to execute the control method for preventing dry burning of the stove as described above when running the program instructions.

[0028] In some embodiments, the computer-readable storage medium stores program instructions, and when the program instructions are executed, the computer is used to execute the control method for preventing dry burning of the stove as described above.

[0029] The embodiments of the present disclosure provide a control method and device for preventing dry burning of a stove, a stove, and a computer-readable storage medium to improve the control effect of preventing dry burning.

[0030] The temperature change of the pot bottom is reflected by setting a heat-absorbing temperature-changing module to absorb the heat of the circulation space composed of the area below the pot bottom and the center of the inner ring fire cover. The top of the heat-absorbing temperature-changing module is lower than the upper end of the inner ring fire cover, realizing non-contact temperature measurement, which is not easy to malfunction due to high temperature and is suitable for a variety of pot bottom shapes. It effectively improves the accuracy of temperature detection, helps to judge the accuracy of cooking status, and thus improves the accuracy of anti-dry burning control, effectively reducing the misjudgment rate of anti-dry burning. The dry burning judgment result is more accurate and timely, and is not affected by the type of pot.

[0031] 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

[0032] 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:

[0033] Figure 1 is a schematic diagram of a usage scenario of the cooker provided in an embodiment of the present disclosure;

[0034] Figure 2 is a schematic diagram of the structure of a cooker provided in an embodiment of the present disclosure;

[0035] Figure 3 It is a flow chart of a control method for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0036] Figure 4 is a flow chart of another control method for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0037] Figure 5 is a flow chart of another control method for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0038] Figure 6 is a flow chart of another control method for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0039] Figure 7a is a schematic diagram of temperature changes of a heat-absorbing temperature-changing module of a cooker provided in an embodiment of the present disclosure;

[0040] Figure 7b is a schematic diagram of temperature changes of another heat-absorbing temperature-changing module of a cooker provided in an embodiment of the present disclosure;

[0041] Figure 8 is a schematic diagram of another control device for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0042] Fig. 9 is a schematic diagram of another control device for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0043] Fig.10 It is a schematic diagram of a stove provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] 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.

[0045] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0046] Unless otherwise stated, the term "plurality" means two or more.

[0047] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0048] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0049] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0050] In the embodiments of the present disclosure, smart home appliances refer to home appliances that are formed by introducing microprocessors, sensor technology, and network communication technology into home appliances. They have the characteristics of intelligent control, intelligent perception, and intelligent application. The operation process of smart home appliances often relies on the application and processing of modern technologies such as the Internet of Things, the Internet, and electronic chips. For example, smart home appliances can be connected to electronic devices to enable users to remotely control and manage the smart home appliances.

[0051] In the disclosed embodiments, the terminal device refers to an electronic device with a wireless connection function. The terminal device can communicate with the above-mentioned smart home appliances by connecting to the Internet, or can communicate with the above-mentioned smart home appliances directly through Bluetooth, WiFi, etc. In some embodiments, the terminal device is, for example, a mobile device, a computer, or a vehicle-mounted device built into a hover car, or any combination thereof. Mobile devices may include, for example, mobile phones, smart home devices, wearable devices, smart mobile devices, virtual reality devices, etc., or any combination thereof, wherein wearable devices include, for example: smart watches, smart bracelets, pedometers, etc.

[0052] The anti-dry-burn technology of stoves generally detects the temperature of the bottom of the pot through a temperature probe, and actively closes the gas channel when the temperature reaches a preset threshold to prevent accidents such as fire. However, since the temperature probe directly contacts the bottom of the pot to measure the temperature, it is easy to cause damage to the temperature probe, and the temperature probe has requirements for the pot. If the bottom of the pot is not flat or not in close contact with the temperature probe, it will cause inaccurate detection by the temperature probe, which is easy to misjudge the cooking status. The actual cooking status does not match the judgment result, resulting in limited anti-dry-burn effect.

[0053] This solution reflects the temperature change of the bottom of the pot by setting up a heat-absorbing and temperature-changing module to absorb the heat of the circulation space composed of the area below the bottom of the pot and the center of the inner ring fire cover. The top of the heat-absorbing and temperature-changing module is located at the upper end of the inner ring fire cover, realizing non-contact temperature measurement, which is not prone to malfunction due to high temperature and is suitable for a variety of pot bottom shapes.

[0054] Figure 1 It is a schematic diagram of a usage scenario of the stove provided in an embodiment of the present disclosure.

[0055] Combination Figure 1 As shown, the usage scenario includes a stove 100 and a home cloud platform 110 for communicating with the stove 100. The stove 100 may be a common stove in a kitchen scenario such as a gas stove, an electromagnetic stove, an electric ceramic stove, an integrated stove, etc.

[0056] The cooker 100 can be connected to the home WiFi network and communicate with control terminals such as mobile phones and cloud servers. Users can also control the cooker 100 to execute cooking program instructions through a smartphone application.

[0057] The stove 100 communicates with the home cloud platform 110 via a WiFi network. The home cloud platform 110 is used to receive real-time status data of the stove 100 for subscription to the big data platform and application service, and also sends cooking program instructions from other business servers, big data platforms, application terminals, and smart terminals to the stove 100.

[0058] In other implementation scenarios of the present solution, a terminal device may also be included for communicating with the stove 100 and / or the home cloud platform 110. Here, the terminal device refers to a smart device in a smart home application scenario, such as a smart phone, a wearable device, a smart mobile device, a virtual display device, etc. It may also be a smart home appliance, such as a smart refrigerator, a smart TV, a smart washing machine, a smart air conditioner, a smart speaker, a smart lamp, and a smart curtain, etc., or any combination thereof.

[0059] Figure 2 It is a schematic diagram of the structure of the stove provided in the embodiment of the present disclosure.

[0060] Combination Figure 2 The embodiment of the present disclosure provides a stove 100, comprising an inner ring fire cover 1, a heat absorbing and temperature changing module 2 and a control module 3. The area at the center of the inner ring fire cover 1 is suitable for forming a circulation space with the bottom of the pot 7 placed on the stove 100; the heat absorbing and temperature changing module 2 extends from the bottom of the inner ring fire cover 1 into the circulation space, and the top is lower than the upper end of the inner ring fire cover 1; the heat absorbing and temperature changing module 2 is used to absorb the heat of the temperature changing space and change the temperature; the control module 3 is connected to the heat absorbing and temperature changing module 2, and is used to judge dry burning according to the temperature change of the heat absorbing and temperature changing module 2.

[0061] Here, the heat absorption and temperature change module 2 is set to absorb the heat of the circulation space composed of the area below the pot bottom and the center of the inner ring fire cover 1 to reflect the temperature change of the pot bottom. The top of the heat absorption and temperature change module 2 is lower than the upper end of the inner ring fire cover 1, realizing non-contact temperature measurement, which is not easy to fail due to high temperature, and is suitable for a variety of pot bottom forms. The accuracy of temperature detection is effectively improved. At the same time, the solution of heat absorption detection using the heat absorption and temperature change module 2 has no requirements on the material of the pot 7 and will not be affected by the emissivity of the pot 7 material.

[0062] The heat absorbing and temperature changing module 2 refers to a device that utilizes its black body heat absorption effect to absorb external heat and convert it into its own temperature change. In this embodiment, the heat absorbing and temperature changing module 2 is a carbon rod, which has the performance of rapid cooling and heating resistance, is not easy to deform at high temperature, and has a high thermal conductivity.

[0063] In this way, the heat in the circulation space absorbed by the heat-absorbing and temperature-changing module 2 has a direct mapping relationship with the actual temperature of the bottom of the pot. The heat in the circulation space is absorbed by the heat-absorbing and temperature-changing module 2, and the temperature sensor obtains the temperature of the heat-absorbing and temperature-changing module 2. The temperature data is analyzed and processed to determine the cooking state of the pot 7 and achieve anti-dry burning control.

[0064] Optionally, the inner ring fire cover 1 further comprises a fire stop ring 4, which is arranged at the upper end of the inner ring fire cover 1; the top of the heat absorption and temperature change module 2 is lower than the lower end of the fire stop ring.

[0065] The fire-blocking ring 4 is arranged at the upper end of the inner ring fire cover 1 and connected to the inner ring fire cover 1. By sleeve-arranging the fire-blocking ring 4 on the inner ring fire cover 1, the flame is prevented from directly affecting the central temperature of the inner ring fire cover 1, and the stability of the circulation space between the bottom of the pot 7 and the central area of ​​the inner ring fire cover 1 is further improved. At the same time, the central flame can be effectively prevented from burning the heat-absorbing temperature-changing module 2, and the accuracy and sensitivity of the heat-absorbing temperature-changing module 2 are ensured.

[0066] Furthermore, the stove of the disclosed embodiment also includes a temperature sensor, which is electrically connected to the control module 3, and is used to detect the temperature of the heat absorption and temperature change module 2 and transmit it to the control module 3, so that the control module 3 can make a dry burning judgment based on the temperature change of the heat absorption and temperature change module 2, thereby achieving safe control of the stove.

[0067] Optionally, the stove in the disclosed embodiment further includes an outer ring fire cover 5 disposed on the outer periphery of the inner ring fire cover 1 ; and a pot support rack 6 disposed on the outer periphery of the outer ring fire cover 5 for supporting pots placed on the stove 100 .

[0068] Compared with the traditional NTC (negative temperature coefficient) anti-dry-burning probe, the heat-absorbing temperature-changing module in the stove provided by the embodiment of the present disclosure does not come into direct contact with the pot during use, the anti-dry-burning control device is not prone to failure, has no requirements for the bottom of the pot, and has stronger adaptability. Furthermore, compared with the infrared temperature measurement anti-dry-burning sensor, the heat-absorbing temperature-changing module in the embodiment of the present disclosure has no requirements for the material of the pot and will not be affected by the emissivity of the pot material. At the same time, the inner ring fire cover and module structure design in the embodiment of the present disclosure ensure that the flame will not directly affect the circulating heat near the heat-absorbing temperature-changing module, and the temperature measurement is more accurate.

[0069] Figure 3 This is a flow chart of a control method for preventing dry burning of a stove provided in an embodiment of the present disclosure, which is applied to the above-mentioned stove. The control method for preventing dry burning of a stove can be executed by the stove; it can also be executed in a server, such as a home cloud platform that communicates with the stove; it can also be executed at a terminal device, such as a smart phone or a control terminal of a smart home appliance. In the embodiment of the present disclosure, the control module of the stove is used as the execution subject to illustrate the scheme.

[0070] like Figure 3 As shown, the control method for preventing dry burning of a stove comprises:

[0071] Step S301: The control module obtains the temperature information of the heat absorption and temperature change module.

[0072] Step S302, the control module determines the cooking stage of the cookware according to the safe cooking parameter interval where the temperature information is located;

[0073] Step S303: According to the cooking stage of the cookware, the control module determines a corresponding anti-dry-burning strategy.

[0074] The temperature information of the heat-absorbing and temperature-changing module refers to the temperature change value of the heat-absorbing and temperature-changing module itself after absorbing the heat of the circulation space. It has a positively correlated mapping relationship with the bottom temperature of the pot.

[0075] The safe cooking parameter range refers to the safe cooking range reflected by the cooking parameters corresponding to the temperature information. Different parameter ranges corresponding to the same cooking parameters represent different cooking stages.

[0076] The cooking stages of a cookware refer to multiple stages divided according to the temperature change of the cookware during the cooking process of the ingredients. In the disclosed embodiment, at least a safe cooking stage and a dry cooking stage are included.

[0077] In this way, by obtaining the temperature information of the heat-absorbing temperature-changing module to judge the cooking stage and then executing the corresponding anti-dry-burn strategy, it is possible to avoid the situation where the temperature detection error at the bottom of the pot leads to the wrong judgment of the cooking status. It can effectively improve the accuracy of temperature detection, help judge the accuracy of the cooking status, and then improve the accuracy of anti-dry-burn control, effectively reducing the misjudgment rate of anti-dry-burn. The dry-burn judgment result is more accurate and timely, and is not affected by the type of pot.

[0078] The cooking stage of the pot may include a safe cooking stage and a dry cooking stage. In this case, the temperature information generally includes the current temperature T of the heat absorbing temperature changing module, and the corresponding safe cooking parameter interval generally includes (T0, T s ) and [T s ,+∞), where T0 is the anti-dry-burning start temperature, T s To prevent dry burning threshold.

[0079] Then, the cooking stage of the cookware is determined according to the safe cooking parameter range in which the temperature information is located, including:

[0080] When T ≥ T s In this case, the corresponding cooking stage of the pot is the dry-burning stage;

[0081] In T<T s In this case, the corresponding cooking stage of the cookware is the safe cooking stage.

[0082] In actual use, since there is a lag in the rise and fall of the temperature at the bottom of the pot, the present application proposes to use the rate of change of the heating rate of the heat-absorbing temperature-changing module to judge the cooking stage of the pot.

[0083] Figure 41 is a flow chart of another control method for preventing dry burning of a stove provided in an embodiment of the present disclosure, which is applied to the above stove. In the embodiment of the present disclosure, the stove is used as the execution subject to illustrate the scheme.

[0084] like Figure 4 As shown, the control method for preventing dry burning of a stove comprises:

[0085] Step S401, the cooker obtains temperature information of the heat absorption and temperature change module.

[0086] In this embodiment, the temperature information of the heat absorbing temperature changing module includes n effective temperatures collected before the current moment, and the change rate a of the heating rate corresponding to the n effective temperatures is determined by using the value of the effective temperature and the acquisition time. n .

[0087] Step S402: when n consecutive effective temperatures satisfy a n When <δ1, the cooking stage corresponding to the cookware is the first stage.

[0088] Step S403: when n consecutive effective temperatures satisfy δ1≤a n When ≤δ2, the cooking stage corresponding to the pot is the second stage.

[0089] Step S404: when n consecutive effective temperatures satisfy a n >δ2, the cooking stage corresponding to the cookware is the third stage.

[0090] Among them, a n is the rate of change of the heating rate of the nth effective temperature collected before the current moment in the temperature information, δ1 is the first safety cooking parameter, δ2 is the second safety cooking parameter, δ1<0<δ2; the first stage, the second stage, and the third stage are arranged in order from the beginning to the end according to the cooking period.

[0091] During the cooking process, the temperature change of the heat-absorbing and temperature-changing module is related to the corresponding cooking stage. Figure 7a In the first stage, the pot with a lower temperature absorbs heat together with the food in the pot, which is reflected in the temperature change of the heat-absorbing temperature-changing module, which is manifested as a gradual increase in temperature and a gradual slowdown in the heating rate; in the second stage, the pot and the food have been heated or the pot has boiled, and the main body of heat absorption becomes the water in the pot, so the temperature of the bottom of the pot rises slowly; in stage III, the food in the pot begins to burn or the water is dried up, and dry burning begins to occur.

[0092] Therefore, when n consecutive effective temperatures satisfy a n <δ1, the cooking stage is determined to be in the first stage; when n consecutive effective temperatures satisfy δ1≤a n≤δ2, the cooking stage corresponding to the pot is the second stage; when n consecutive effective temperatures meet a n >δ2, the cooking stage corresponding to the cookware is the third stage.

[0093] Step S405, when the current cooking stage is the third stage, the stove is controlled to reduce the firepower. In this stage, the pot may be burnt or dry-burned, and the stove is controlled to turn off the fire and gas and control the buzzer to alarm. When the current stage is the first stage or the second stage, return to step S401.

[0094] Furthermore, under different stove firepowers, the values ​​of safe cooking state parameters are different. For example, the pot temperature change rate thresholds corresponding to different firepowers are different. Therefore, by combining the stove firepower to determine the corresponding safe cooking parameters, the accuracy of the safety judgment of the current cooking state in the pot can be improved.

[0095] Optionally, before determining the current cooking stage of the cookware according to the safe cooking parameter interval in which the temperature change information is located, the method further includes:

[0096] Get the stove power and safe cooking parameters;

[0097] The safe cooking parameters are adjusted according to the fire power of the stove, and the adjusted safe cooking parameters are combined into a safe cooking parameter range.

[0098] Here, adjusting the safe cooking parameter may include adjusting the direction and / or the amplitude of the safe cooking parameter.

[0099] Here, the adjustment direction refers to whether the safe cooking parameters need to be increased or decreased in accordance with the current stove firepower, so as to achieve adaptation to the current stove firepower.

[0100] The adjustment amplitude refers to the amount of change when the safe cooking parameters are adjusted corresponding to the current stove firepower, so as to achieve adaptation to the current stove firepower.

[0101] Furthermore, in the case where the adjustment trend includes an adjustment direction, the adjustment trend of the safe cooking parameter is determined according to the current firepower of the stove, including:

[0102] The stove power is obtained, and the adjustment direction of the safe cooking parameter corresponding to the current stove power is obtained by searching the pre-stored association relationship. The preset corresponding relationship includes an association relationship of a one-to-one correspondence between the stove power and the adjustment direction of one or more safe cooking parameters. The association relationship can be pre-stored in the controller of the stove, or can be pre-stored in other smart home appliances connected to the stove. In the process of mutual communication between the smart home appliance and the stove, the association relationship is retrieved to determine the adjustment direction of the safe cooking parameter according to the stove power.

[0103] For example, the one-to-one correspondence between the firepower of the cooker and one or more safe cooking parameters can be pre-stored in the controller in the form of a table. Table 1 shows an example of the above-mentioned association relationship.

[0104] Table 1

[0105] Safe cooking parameters Relationship with stove power <![CDATA[δ1]]> Negative correlation <![CDATA[δ2]]> Positive correlation

[0106] Furthermore, in the case where the adjustment trend includes the adjustment amplitude, the adjustment trend of the safe cooking parameter is determined according to the current fire power of the stove, including:

[0107] The stove power is obtained, and the adjustment range of the safe cooking parameter corresponding to the current stove power is obtained by searching the pre-stored association relationship. The preset corresponding relationship includes an association relationship of a one-to-one correspondence between the stove power and the adjustment range of one or more safe cooking parameters. The association relationship can be pre-stored in the controller of the stove, or can be pre-stored in other smart home appliances connected to the stove. In the process of mutual communication between the smart home appliance and the stove, the association relationship is retrieved to determine the adjustment range of the safe cooking parameter according to the stove power.

[0108] Figure 5 1 is a flow chart of another control method for preventing dry burning of a stove provided in an embodiment of the present disclosure, which is applied to the above stove. In the embodiment of the present disclosure, the stove is used as the execution subject to illustrate the scheme.

[0109] like Figure 5 As shown, the control method for preventing dry burning of a stove comprises:

[0110] Step S501, the cooker obtains temperature information of the heat absorption and temperature change module.

[0111] Step S502: The stove determines the cooking stage of the pot according to the safe cooking parameter interval where the temperature information is located.

[0112] Step S503, when the cooking stage of the pot indicates that dry burning occurs, control the stove to reduce the firepower. For example, when the cooking stage of the pot is in the dry burning stage, or Figure 4 The third stage indicates dry burning.

[0113] Step S504, when the cooking stage of the cookware indicates that dry burning has not occurred, obtain the dry burning condition corresponding to the current firepower of the stove. For example, when the cooking stage of the cookware is in the safe cooking stage, or Figure 4 During the first and second stages of the heating, it means that no dry burning occurs.

[0114] Step S505: if the temperature information meets the dry-burning condition, reduce the firepower of the stove.

[0115] By judging whether the temperature information meets the dry-burning conditions, the accuracy of the anti-dry-burning control can be further improved, and the misjudgment rate of the anti-dry-burning can be effectively reduced.

[0116] By obtaining the dry-burning condition corresponding to the current stove firepower, the accuracy of the judgment of safe cooking in the current pot can be improved.

[0117] Furthermore, the dry burning condition corresponding to the current stove firepower is obtained, including:

[0118] The current stove firepower is obtained, and the dry-burning condition corresponding to the current stove firepower is obtained by searching a pre-stored association relationship, wherein the preset corresponding relationship includes a one-to-one correspondence between the stove firepower and the dry-burning condition. The association relationship can be pre-stored in a controller of the stove, or can be pre-stored in other smart home appliances connected to the stove. During the process of mutual communication between the smart home appliances and the stove, the association relationship is retrieved to determine the corresponding dry-burning condition according to the current stove firepower.

[0119] Specifically, the dry burning condition corresponding to the current stove firepower is obtained, including:

[0120] Obtain the current stove firepower and determine the firepower adjustment factor k0 which is positively correlated with the stove firepower;

[0121] The heating rates of n consecutive effective temperatures all satisfy ΔT n >k0*ΔT, determine the dry burning conditions;

[0122] Where, ΔT n is the heating rate of the nth effective temperature collected before the current moment in the temperature information, and ΔT is the heating rate of the heat absorption temperature changing module for the first set time before the current moment in the temperature information.

[0123] Among them, the firepower adjustment factor k0 is positively correlated with the firepower of the stove. By establishing the corresponding relationship between the firepower of the stove and the heating rate of the heat-absorbing temperature-changing module, the dry-burning condition corresponding to the firepower of the stove is determined, thereby improving the accuracy of the judgment of safe cooking in the current pot.

[0124] Figure 6 The flowchart of a control method for preventing dry burning of a stove provided by the embodiment of the present disclosure is applied to the above stove. In the embodiment of the present disclosure, the control module of the stove is used as the execution body to illustrate the scheme.

[0125] like Figure 6 As shown, the control method for preventing dry burning of a stove comprises:

[0126] Step S601, the control module obtains the current firepower of the stove. When the firepower of the stove changes, step S601 is re-executed to perform dry-burn prevention calculation and judgment under the current firepower of the stove.

[0127] Step S602, the control module collects the effective temperature of the heat absorbing and temperature changing module until it meets the set number n. After collecting the effective temperature of the heat absorbing and temperature changing module until it meets the set number, a new anti-dry burning calculation and judgment is performed every time a new effective temperature of the heat absorbing and temperature changing module is obtained.

[0128] The temperature of the heat-absorbing temperature-changing module (carbon rod) directly collected by the temperature sensor can be used as the effective temperature at the current moment; or the tail-less average of multiple temperature values ​​collected over a continuous period of time can be calculated and used as the current effective temperature T.

[0129] Step S603: the control module determines the temperature information of the heat absorbing and temperature changing modules according to the effective temperatures of the plurality of heat absorbing and temperature changing modules.

[0130] Here, the temperature information includes one or more of the effective temperatures of n heat absorbing and temperature changing modules, the heating rate of the nth effective temperature, the change rate of the heating rate of the nth effective temperature, and the heating rate of the heat absorbing and temperature changing modules for the first set time.

[0131] Step S604, when the effective temperature of the heat-absorbing temperature-changing module collected at the current moment is greater than the anti-dry-burning starting temperature T0, the control module obtains a safe cooking parameter interval corresponding to the current firepower of the stove.

[0132] Step S605: when n consecutive effective temperatures meet a n When δ<δ1, the control module determines that the cooking stage corresponding to the cookware is the first stage and proceeds to step S608. Otherwise, the control module proceeds to step S606.

[0133] Step S606: when n consecutive effective temperatures satisfy δ1≤a n If ≤δ2, the control module determines that the cooking stage corresponding to the cookware is the second stage and proceeds to step S608. Otherwise, the control module proceeds to step S607.

[0134] Step S607: when n consecutive effective temperatures satisfy a n >δ2, the control module determines that the cooking stage corresponding to the cookware is the third stage and proceeds to step S611. Otherwise, the control module proceeds to step S608.

[0135] Step S608: The control module determines a power adjustment factor k0 which is positively correlated with the power of the stove, and sets the change rate of the consecutive n effective temperatures to satisfy ΔT n >k0*ΔT, which is determined as dry burning condition;

[0136] Step S609: The control module determines whether the temperature information of the heat absorbing and temperature changing module meets the dry-burning condition. If the dry-burning condition is met, the process proceeds to step S610; otherwise, the process returns to step S602.

[0137] Step S610: the control module controls the stove to reduce the fire power.

[0138] Figure 7b The temperature change information of the heat-absorbing and temperature-changing module under different stove firepowers during actual use is shown. Among them, the horizontal axis is the cooking time, and the vertical axis is the temperature detection value of the heat-absorbing and temperature-changing module (carbon rod). It can be seen that under different stove firepowers, the heating rate and the rate of change of the heating rate of the heat-absorbing and temperature-changing module are different; the corresponding cooking stages are different under the same cooking time; and the cooking time required to reach the same temperature is different. The temperature of the heat-absorbing and temperature-changing module is positively correlated with the temperature at the bottom of the pot, which can reflect the temperature change at the bottom of the pot, and then judge the cooking status of the ingredients in the pot based on this.

[0139] In this way, by obtaining the temperature information of the heat-absorbing temperature-changing module to judge the cooking stage and then executing the corresponding anti-dry-burn strategy, it is possible to avoid the situation where the temperature detection error at the bottom of the pot leads to the wrong judgment of the cooking status. It can effectively improve the accuracy of temperature detection, help judge the accuracy of the cooking status, and then improve the accuracy of anti-dry-burn control, effectively reducing the misjudgment rate of anti-dry-burn. The dry-burn judgment result is more accurate and timely, and is not affected by the type of pot.

[0140] Combination Figure 8 As shown, the embodiment of the present disclosure provides a control device 800 for preventing dry burning of the aforementioned cooker, comprising a temperature detection module 81, a control module 82 and an execution module 83. The temperature detection module 81 is configured to obtain the temperature information of the heat absorption temperature changing module; the control module 82 is configured to determine the cooking stage of the cookware according to the safe cooking parameter interval where the temperature information is located; and the execution module 83 is configured to determine the corresponding dry burning prevention strategy according to the cooking stage of the cookware.

[0141] Combination Fig. 9 As shown, the embodiment of the present disclosure provides a control device 900 for preventing dry burning of the aforementioned stove, including a processor 90 and a memory 91. Optionally, the device 900 may also include a communication interface 92 and a bus 93. Among them, the processor 90, the communication interface 92, and the memory 91 can communicate with each other through the bus 93. The communication interface 92 can be used for information transmission. The processor 90 can call the logic instructions in the memory 91 to execute the control method for preventing dry burning of the stove in the above embodiment.

[0142] In addition, the logic instructions in the above-mentioned memory 91 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0143] The memory 91 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 90 executes the function application and data processing by running the program instructions / modules stored in the memory 91, that is, the control method for preventing dry burning of the stove in the above embodiment is realized.

[0144] The memory 91 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 91 may include a high-speed random access memory and may also include a non-volatile memory.

[0145] Combination Fig.10 As shown, the embodiment of the present disclosure provides a stove 100, including: a product body, and the above-mentioned control device 700 (800) for preventing dry burning of the stove. The control device 700 (800) for preventing dry burning of the stove is installed on the product body. The installation relationship described here is not limited to being placed inside the product body, but also includes installation connections with other components of the stove 100, including but not limited to physical connections, electrical connections or signal transmission connections. It can be understood by those skilled in the art that the control device 700 (800) for preventing dry burning of the stove can be adapted to a feasible product body, thereby realizing other feasible embodiments.

[0146] 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.

[0147] 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 described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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: An inner ring fire cover, wherein the center area of ​​the inner ring fire cover is suitable for forming a circulation space with the bottom of a pot placed on the cooker; The heat absorbing and temperature changing module extends from the bottom of the inner ring fire cover to the annular flow space, and the top is lower than the upper end of the inner ring fire cover; the heat absorbing and temperature changing module is used to absorb the heat of the annular flow space and generate temperature changes; The control module is connected to the heat absorption and temperature change module and is used for making a dry burning judgment according to the temperature change of the heat absorption and temperature change module.

2. The cooker according to claim 1, characterized in that: The inner ring fire cover also includes: A fire-blocking ring is arranged at the upper end of the inner ring fire cover; The top of the heat-absorbing and temperature-changing module is lower than the lower end of the fire-blocking ring.

3. A control method for preventing dry burning of the stove according to claim 1 or 2, characterized in that: include: Obtain the temperature information of the heat absorption and temperature changing module; Determine the cooking stage of the cookware according to the safe cooking parameter range of the temperature information; Determine the corresponding anti-dry-burn strategy according to the cooking stage of the pot.

4. The control method according to claim 3, characterized in that: Determine the corresponding anti-dry-burning strategy according to the cooking stage of the pot, including: If the pot is dry-burning during the cooking stage, control the cooker to reduce the fire; When the cooking stage of the pot indicates that dry burning does not occur, obtaining a dry burning condition corresponding to the current fire power of the stove; If the temperature information meets the dry burning conditions, reduce the stove fire.

5. The control method according to claim 4, characterized in that: Get the dry burning conditions corresponding to the current stove power, including: Obtain the current stove firepower and determine the firepower adjustment factor k0 which is positively correlated with the stove firepower; The heating rates of n consecutive effective temperatures all satisfy ΔT n >k0*ΔT, which is determined as dry burning condition; Where, ΔT n is the heating rate of the nth effective temperature collected before the current moment in the temperature information, and ΔT is the heating rate of the heat absorption temperature changing module for the first set time before the current moment in the temperature information.

6. The control method according to claim 3, characterized in that: The step of determining the cooking stage of the cookware according to the safe cooking parameter interval in which the temperature information is located includes: In a n When <δ1, the cooking stage corresponding to the pot is the first stage; When δ1≤a n When ≤δ2, the cooking stage corresponding to the pot is the second stage; In a n >δ2, the cooking stage corresponding to the pot is the third stage; Among them, a n is the rate of change of the heating rate of the nth effective temperature collected before the current moment in the temperature information, δ1 is the first safety cooking parameter, δ2 is the second safety cooking parameter, δ1<0<δ2; the first stage, the second stage, and the third stage are arranged in order from the beginning to the end according to the cooking period.

7. The control method according to any one of claims 3 to 6, characterized in that: Before determining the current cooking stage of the cookware according to the safe cooking parameter range in which the temperature change information is located, the following steps are also included: Get the stove power and safe cooking parameters; The safe cooking parameters are adjusted according to the fire power of the stove, and the adjusted safe cooking parameters are combined into a safe cooking parameter range.

8. A control device for preventing dry burning of the cooker according to claim 1 or 2, comprising: A temperature detection module is configured to obtain temperature information of the heat absorption and temperature change module; A control module is configured to determine a cooking stage of the cookware according to a safe cooking parameter interval in which the temperature information is located; The execution module is configured to determine a corresponding anti-dry-burning strategy according to the cooking stage of the cookware.

9. A control device for preventing dry burning of a stove, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the control method for preventing dry burning of a cooker according to any one of claims 3 to 7 when running the program instructions.

10. A computer-readable storage medium storing program instructions, characterized in that: When the program instructions are executed, the computer is used to execute the control method for preventing dry burning of a cooker according to any one of claims 3 to 7.

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