Heat preservation method and device of cooking utensil and cooking utensil

Abstract

The invention discloses a heat preservation method and device of a cooking utensil and the cooking utensil, and relates to the technical field of electronics. The cooking utensil comprises a heating cavity, a first heating device, a second heating device, a third heating device and a temperature detection device, and the temperature detection device is used for detecting the working temperature in the heating cavity. The method comprises the steps of determining a preset heat preservation temperature and a target heat preservation duration in response to a process that the cooking utensil is in a heat preservation mode; within the target heat preservation duration, the working temperature in the heating cavity is detected through a temperature detection device; and heating parameters of the first heating device, the second heating device and the third heating device are controlled according to the target size relation between the working temperature and the preset heat preservation temperature so as to conduct heat preservation. In the process that the cooking utensil is in the heat preservation mode, the heating parameters of the three heat sources included in the cooking utensil are controlled according to the preset heat preservation temperature and the target heat preservation duration, and the uniformity of the heat preservation temperature of the cooking utensil is improved.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a method and device for heat preservation of a cooking utensil, and the cooking utensil. Background Art

[0002] With the development of science and technology, household appliances are used more and more widely and have more and more functions. They have become one of the necessities in people's daily life. At present, kitchen utensils are becoming more and more intelligent, and cooking utensils are becoming more and more diverse. In the related art, there is a problem of uneven temperature in the process of keeping food warm by cooking utensils. Summary of the invention

[0003] In view of the above problems, the present application proposes a method and device for keeping warm a cooking utensil, and a cooking utensil to improve the above technical problems.

[0004] In the first aspect, the embodiment of the present application provides a method for keeping warm a cooking appliance, wherein the cooking appliance comprises a heating chamber, a first heating device, a second heating device, a third heating device, and a temperature detection device, wherein the temperature detection device is used to detect the working temperature in the heating chamber. The method comprises: in response to the cooking appliance being in a keeping warm mode, determining a preset keeping warm temperature and a target keeping warm time; within the target keeping warm time, detecting the working temperature in the heating chamber by the temperature detection device; and controlling the heating parameters of the first heating device, the second heating device, and the third heating device according to the target size relationship between the working temperature and the preset keeping warm temperature, so as to keep warm.

[0005] In a third aspect, an embodiment of the present application provides a heat preservation device for a cooking utensil, wherein the cooking utensil includes a heating cavity, and the cooking utensil also includes a first heating device, a second heating device, a third heating device, and a temperature detection device, wherein the temperature detection device is used to detect the working temperature in the heating cavity. The heat preservation device of the cooking utensil includes: a preset heat preservation temperature and a target heat preservation time determination module, a working temperature detection module, and a heat preservation control module. Among them, the preset heat preservation temperature and the target heat preservation time determination module is used to determine the preset heat preservation temperature and the target heat preservation time in response to the process in which the cooking utensil is in the heat preservation mode; the working temperature detection module is used to detect the working temperature in the heating cavity through the temperature detection device within the target heat preservation time; the heat preservation control module is used to control the heating parameters of the first heating device, the second heating device, and the third heating device according to the target size relationship between the working temperature and the preset heat preservation temperature, so as to keep warm.

[0006] In a third aspect, an embodiment of the present application provides a cooking appliance, the cooking appliance comprising a heating cavity, the cooking appliance further comprising a first heating device, a second heating device, a third heating device and a temperature detection device, the temperature detection device being used to detect the working temperature in the heating cavity; the cooking appliance further comprising: one or more processors, a memory and one or more applications. One or more of the applications are stored in the memory and configured to be executed by one or more of the processors, and one or more of the applications are configured to execute the method of the first aspect above.

[0007] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which a program code is stored, and the program code is called by a processor to execute the method of the first aspect as described above.

[0008] The heat preservation method, device and cooking utensil provided in the embodiments of the present application arrange the first heating device, the second heating device and the third heating device at different positions in the heating cavity, obtain the working temperature in the heating cavity in real time through the temperature detection device, and determine the preset heat preservation temperature and the target heat preservation time when the cooking utensil is in the heat preservation mode. During the target heat preservation time, according to the relationship between the working temperature of the cooking utensil and the preset heat preservation temperature, the three heat sources included in the cooking utensil are controlled to heat with different heating parameters for heat preservation, thereby improving the uniformity of the temperature in the heating cavity of the cooking utensil and enhancing the heat preservation performance of the cooking utensil. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 A schematic diagram of a cooking appliance provided in an embodiment of the present application is shown.

[0011] Figure 2 A schematic diagram of an NTC detection circuit provided in an embodiment of the present application is shown.

[0012] Figure 3 A schematic diagram of thermocouple detection provided by an embodiment of the present application is shown.

[0013] Figure 4 A flow chart of a method for keeping warm a cooking appliance provided in one embodiment of the present application is shown.

[0014] Figure 5A flow chart of a method for keeping warm a cooking appliance provided in one embodiment of the present application is shown.

[0015] Figure 6 A flow chart of a method for keeping warm a cooking appliance provided in one embodiment of the present application is shown.

[0016] Figure 7 A flow chart of a method for keeping warm a cooking appliance provided in one embodiment of the present application is shown.

[0017] Figure 8 A structural block diagram of a heat preservation device for a cooking utensil provided in one embodiment of the present application is shown.

[0018] Fig. 9 A structural block diagram of a cooking appliance provided in an embodiment of the present application is shown.

[0019] Fig.10 A structural block diagram of a computer-readable storage medium provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0021] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0022] With the development of science and technology, cooking utensils are becoming more and more intelligent, and the cooking cavities of cooking utensils are becoming more and more diverse. For example, an air fryer may include a frying barrel in a square, cylindrical, or other shape. In the related art, since most cooking utensils use a single heating tube to keep food warm and have cooking cavities of various shapes, the heat preservation performance of the cooking utensils is not high. For example, when an air fryer including a square frying barrel uses a single heating tube to keep food warm, it is easy for a large temperature difference to occur in the frying barrel; in addition, due to the large temperature difference in the frying barrel, it is also easy for the food in the frying barrel to deteriorate or partially burn.

[0023] Therefore, in the related art, there is a problem of uneven temperature when the cooking utensils keep food warm.

[0024] In view of the above problems, the inventors have discovered after long-term research and proposed a method, device and cooking utensil for keeping warm provided in the embodiments of the present application. When the cooking utensil is in the keeping warm mode, the heating parameters of the heat sources arranged at different positions of the heating chamber in the cooking utensil are controlled according to the preset keeping warm temperature and the target keeping warm time to keep warm, thereby improving the uniformity of the keeping warm temperature of the cooking utensil. The specific keeping warm method will be described in detail in the subsequent embodiments.

[0025] See also Figure 1 , which shows a schematic diagram of the structure of a cooking device provided by an embodiment of the present application. In the embodiment of the present application, the cooking device 100 may include a housing assembly 10, a frying bucket 20, a first heating device 30, a second heating device 40, a third heating device 50 and a control assembly 60 (not shown).

[0026] The housing assembly 10 is provided with a receiving cavity, and the frying vat 20 is movably arranged in the receiving cavity. The frying vat 20 may include a bottom wall and a peripheral wall, wherein the peripheral wall is connected to the periphery of the bottom wall to form a heating cavity 101 for accommodating food. The first heating device 30 is arranged in the housing assembly 10 and is located above the heating cavity 101; the second heating device 40 is arranged in the housing assembly 10 and is surrounded by the peripheral wall; the third heating device 50 is arranged in the housing assembly 10 and is located below the bottom wall. The control component 60 is respectively connected to the first heating device 30, the second heating device 40 and the third heating device 50, and is used to control the heating parameters of the first heating device 30, the second heating device 40 and the third heating device 50, such as heating time, heating power, etc., when the cooking appliance 100 is in the heat preservation mode, so as to keep warm.

[0027] The cooking utensil 100 may have functions such as cooking and heat preservation. The cooking utensil 100 may generate hot air through the first heating device 30, the second heating device 40 and the third heating device 50, and then the hot air is quickly circulated in a sealed space through a hot air convection system, thereby realizing a method for keeping food warm. In the embodiment of the present application, the cooking utensil 100 may be an air fryer with a heat preservation function.

[0028] Among them, according to Figure 1 It can be seen that the housing assembly 10 plays a supporting role. The housing assembly 10 includes a bottom cover, a side wall and a top plate. The bottom cover and the top plate are spaced apart in a specified direction. The specified direction refers to a direction perpendicular to the plane where the bottom cover is located. One side of the side wall is connected to the periphery of the bottom cover, and the other side is connected to the periphery of the top plate. The housing assembly 10 is provided with a receiving cavity, and the receiving cavity is used to receive the frying vat 20. The side wall is formed with an opening for the frying vat 20 to be placed in the receiving cavity.

[0029] In some embodiments, a control panel is provided on the outer surface of the side wall of the housing assembly 10 or the surface of the top plate away from the bottom cover, and the control panel includes one or more functional controls, including but not limited to start controls, reservation controls, time setting controls, mode setting controls, food type setting controls, etc.

[0030] The frying vat 20 can be movably disposed in the accommodating cavity. When the frying vat 20 is disposed in the accommodating cavity, a handle is provided on the surface of the frying vat 20 exposed in the accommodating cavity for a user to grasp. The frying vat 20 includes a bottom wall and a peripheral wall, and the peripheral wall surrounds and is connected to the periphery of the bottom wall to form a heating cavity 101 for accommodating food.

[0031] The first heating device 30, the second heating device 40 and the third heating device 50 are used to realize the heat preservation function of the cooking device 100. Optionally, the first heating device 30 may include a heating tube, an infrared heating plate, etc., the second heating device 40 may include a heating belt, a heating tube, etc., wherein the heating belt may be arranged around the peripheral wall of the frying vat, and the third heating device 50 may include a heating tube, an infrared heating plate, etc., which are not limited here; wherein the first heating device 30, the second heating device 40 and the third heating device 50 may be the same heating device or different heating devices; wherein the maximum power of the first heating device 30, the second heating device 40 and the third heating device 50 may be the same or different.

[0032] For example, considering that the food in the frying vat 20 is mainly located at the bottom of the frying vat 20, and the first heating device 30 is located above the heating chamber and is far away from the food in the frying vat, in this embodiment, the maximum power of the first heating device 30 can be set to be greater than the maximum power of the third heating device 50, and the maximum power of the third heating device 50 is greater than the maximum power of the second heating device 40, thereby ensuring that the cooking device 100 keeps the food warm and improves the reliability of heat preservation. For example, the first heating device 30 includes a high-power heating tube, the second heating device 40 includes a low-power heating belt, and the third heating device 50 includes a medium-power infrared tube; the first heating device 30 may include a heating tube with parameters of DC voltage DC220V, 50Hz, and 1000W, the second heating device 40 may include a heating belt with parameters of DC220V, 50Hz, and 150W, and the third heating device 50 may include an infrared tube with parameters of DC220V, 50Hz, and 500W.

[0033] In some embodiments, the second heating device 40 may be disposed in the housing assembly 10 around the peripheral wall of the frying vat 20, or the second heating device 40 may be disposed at a single point on the peripheral wall of the frying vat 20. In this embodiment, in order to ensure the uniformity of the temperature in the heating chamber 101, the distance between the second heating device 40 and the third heating device 50 may be set to be greater than a distance threshold. The distance threshold may be set by the user or obtained through third-party experimental data. For example, the distance threshold is 2 cm.

[0034] In some embodiments, the first heating device 30 may be disposed in correspondence with the heating cavity 101 and fixedly disposed in the housing assembly 10 through a fixed structure, and is used for heating when the cooking utensil 100 is in the keep-warm mode, so that the gas in the heating cavity 101 is heated up. The second heating device 40 may be disposed in an annular manner in the housing assembly 10 corresponding to the peripheral wall of the frying vat 20, and is used for heating when the cooking utensil 100 is in the keep-warm mode, so that the gas in the heating cavity 101 is heated up. The third heating device 50 may be disposed in the housing assembly 10 corresponding to the bottom wall of the frying vat 20, and is used for heating when the cooking utensil 100 is in the keep-warm mode, so that the gas in the heating cavity 101 is heated up. It should be noted that the fixed structure for fixing the first heating device 30, the fixed structure for fixing the second heating device 40, and the fixed structure for fixing the third heating device 50 may be the same or different.

[0035] In some embodiments, considering that the range of heat radiation of the infrared disk is wider than the heating range of the heating tube, in this embodiment, the third heating device 50 may include an infrared heating disk, and then the bottom wall of the frying bucket 20 is heated based on the infrared disk with a larger heat dissipation range, thereby improving the efficiency of the temperature rise in the heating cavity 101 when the cooking utensil 100 keeps food warm, and also improving the uniformity of the temperature in the heating cavity 101.

[0036] In this embodiment, the control component 60 is connected to the first heating device 30, the second heating device 40 and the third heating device 50 respectively, and is used to control the heating parameters of the first heating device 30, the second heating device 40 and the third heating device 50 when the cooking appliance 100 is in the keep warm mode.

[0037] In some embodiments, the heating power of the first heating device 30 can remain unchanged, the heating power of the second heating device 40 can be adjusted, and the heating power of the third heating device 40 can remain unchanged. Further, in this embodiment, the heating time of the first heating device 30, the heating power and / or heating time of the second heating device 40, and the heating time of the third heating device 50 can be controlled by the control component 60 during the cooking device 100 being in the keep-warm mode, so as to improve the uniformity of the temperature in the heating cavity 101.

[0038] In some embodiments, the control component 60 is also connected to the control panel on the housing component 10. When receiving an operation signal for any functional control, the control panel generates a corresponding electrical signal and sends it to the control component 60. The control component 60 can control the cooking appliance 100 based on the electrical signal. Optionally, the control component 60 can include a micro controller unit (MCU).

[0039] Please refer again Figure 1 In some embodiments, the cooking appliance 100 may further include a hot air blower 102. The hot air blower 102 is disposed in the housing assembly 10 and is located on a side away from the heating cavity 101 relative to the first heating device 30, and is used to blow air into the heating cavity 101 when the cooking appliance 100 is in the insulation mode. The hot air blower 102 is spaced apart from the first heating device 30, and the hot air blower 102 is also fixed in the housing assembly 10 by a fixed structure. In some embodiments, the hot air blower 102 may also be used to cause the high-temperature gas generated by the heating of the first heating device 30 to convectively circulate in the heating cavity 101, thereby keeping the food warm. It should be noted that the fixed structure for fixing the first heating device 30 may be the same as or different from the fixed structure for fixing the hot air blower 102.

[0040] Among them, the hot air blower 102 can be driven by a motor to rotate the fan blades to blow air, and can include multiple gears, such as high gear (speed above 2500rpm / min), medium gear (speed of 1500-2500rpm / min), low gear (speed below 1500rpm / min), etc. By way of example, the hot air blower 102 can include a fan with parameters of DC220V, 50Hz, and 1000W.

[0041] In which, when the cooking appliance 100 includes a hot air blower 102, the control component 60 is connected to the hot air blower 102 and is used to control the working parameters of the hot air blower 102, such as controlling the rotation speed and rotation time of the hot air blower 102.

[0042] In some embodiments, considering that the hot air blower 101 is located on the side away from the heating chamber 101 relative to the first heating device 30, the hot air blower 102 can accelerate the heat dissipation of the first heating device 30. In this embodiment, the maximum power of the first heating device 30 can be set to be greater than the maximum power of the third heating device 50, and the maximum power of the third heating device 50 can be set to be greater than the maximum power of the second heating device 40, so as to accelerate the efficiency of increasing the temperature of the heating chamber 101 and the uniformity of the temperature in the heating chamber 101.

[0043] In some embodiments, the cooking appliance 100 may further include a temperature detection device 70 (not shown), wherein the temperature detection device 70 can be used to detect the working temperature in the heating chamber 101, so that the cooking appliance 100 adjusts the heating parameters of the heat source in the insulation mode according to the working temperature, thereby improving the accuracy of the temperature control of the cooking appliance 100 and providing insulation performance of the cooking appliance.

[0044] Please refer again Figure 1 In some embodiments, the temperature detection device 70 may include a first temperature detection device 103 and a second temperature detection device 104. The first temperature detection device 103 may be used to detect a first measured temperature near the first heating device 30, and the second temperature detection device 104 may be used to detect a second measured temperature near the third heating device 50. The first measured temperature and the second measured temperature may be used as the working temperature of the heating chamber 101. The first temperature detection device 103 is disposed in the housing assembly 10 and located above the heating chamber 101, and is used to detect the temperature above the heating chamber 101; the second temperature detection device 104 may be disposed below the bottom wall of the frying vat 20, and is used to detect the temperature of the bottom wall.

[0045] Among them, the first temperature detection device 103 may include a thermocouple detection circuit, a thermistor NTC detection circuit, etc., and the second temperature detection device 104 may include a thermocouple detection circuit, an NTC detection circuit, etc.; among them, the first temperature detection device 103 may be the same as the second temperature detection device 104 or different, which is not limited here.

[0046] When the cooking appliance 100 includes the first temperature detection device 103 and the second temperature detection device 104, the first temperature detection device 103 can be connected to the control component 60 to detect the temperature near the first heating device 30, such as the temperature above the heating chamber 101, and report the temperature as the first measured temperature to the control component 60, and the second detection device 103 can be connected to the control component 60 to detect the temperature near the third heating device 50, such as the temperature of the bottom wall of the frying bucket 20, and report the temperature as the second measured temperature to the control component 60.

[0047] Among them, the control component 60 can adjust the heating parameters of the first heating device 30, the second heating device 40 and the second heating device 50 based on the first measured temperature and the second measured temperature, so as to achieve precise control of the temperature of the heating chamber 101 and improve the uniformity of the temperature in the heating chamber 101.

[0048] In some embodiments, considering that the temperature resistance of the thermocouple detection circuit is higher than that of the NTC detection circuit, the hot air blower 102 can accelerate the heat dissipation of the first heating device 30. In this embodiment, the first temperature detection device 103 may include an NTC detection circuit, and the second temperature detection device 104 may include a thermocouple detection circuit to detect the temperature above the heating chamber 101 based on the NTC detection circuit, and to detect the temperature of the bottom wall of the frying barrel 20 based on the thermocouple detection circuit.

[0049] For example, see Figure 2 , which shows a schematic diagram of the connection between the first temperature detection device and the control component provided by an embodiment of the present application. The first temperature detection device 103 includes an NTC detection circuit, such as Figure 2 As shown; the controller 60 may include a main control chip, wherein the main control chip is connected to the NTC detection circuit. The NTC detection circuit is composed of resistors R1, R2, R3, thermistor CN071, capacitors C1 and C2 based on Figure 2 The components are connected in the manner shown.

[0050] For example, see Figure 3 , which shows a schematic diagram of the connection between the second temperature detection device and the control component provided by an embodiment of the present application. The second temperature detection device 104 includes a thermocouple detection circuit, such as Figure 3 As shown; the controller 60 may include a main control chip, wherein the main control chip is connected to a thermocouple detection circuit. The thermocouple detection circuit is composed of resistors R4, R5, R6, R7, R8, R9, R10, R11, a temperature sensor, capacitors C3, C4, C5, a comparator U021B and U021A based on the following Figure 3 The components are connected in the manner shown.

[0051] In some embodiments, the control component 60 can execute the insulation process after receiving the insulation instruction. During this insulation process, the control component 60 can determine the preset insulation temperature and the target insulation time in response to the cooking appliance 100 being in the insulation mode; within the target insulation time, the working temperature in the heating chamber 101 is detected by the temperature detection device 70; according to the target size relationship between the working temperature and the preset insulation temperature, the heating parameters of the first heating device 30, the second heating device 40 and the third heating device 50 are controlled to perform insulation, so that by controlling the heating parameters of the three heat sources included in the cooking appliance 100 when the cooking appliance 100 is in the cooking mode, the three heat sources cooperate to generate heat to ensure the uniformity of the temperature in the heating chamber 101, thereby improving the insulation performance of the cooking appliance 100.

[0052] See also Figure 4 , Figure 4A flow chart of a method for keeping warm a cooking appliance provided in an embodiment of the present application is shown. The method for keeping warm a cooking appliance is implemented by placing a first heating device, a second heating device, and a third heating device at different positions in a heating chamber, obtaining the working temperature in the heating chamber in real time through a temperature detection device, and determining a preset keeping warm temperature and a target keeping warm time when the cooking appliance is in a keeping warm mode. During the target keeping warm time, the three heat sources included in the cooking appliance are controlled to heat with different heating parameters according to the relationship between the working temperature of the cooking appliance and the preset keeping warm temperature, thereby ensuring the uniformity of the temperature in the heating chamber of the cooking appliance and improving the keeping warm performance of the cooking appliance. In a specific embodiment, the method for keeping warm can be applied to, for example, Figure 8 The heat-keeping device 200 for a cooking appliance and the cooking appliance 100 ( Fig. 9 ). The following will take cooking utensils as an example to illustrate the specific process of this embodiment. Of course, it can be understood that the cooking utensils used in this embodiment may include air fryers, ovens, microwave ovens, etc., which are not limited here. Figure 4 The process shown in the figure is described in detail, and the heat preservation method of the cooking utensil may specifically include the following steps:

[0053] Step S110: In response to the cooking appliance being in the keep-warm mode, determining a preset keep-warm temperature and a target keep-warm time.

[0054] In some embodiments, the cooking appliance may include working modes such as a cleaning mode, a cooking mode, a heat preservation mode, and a standby mode. In the heat preservation mode, the cooking appliance may control the coordinated heating of the first heating device, the second heating device, and the third heating device included in the cooking appliance to keep the food placed in the cooking appliance warm at a precise temperature; in the cooking mode, the cooking appliance may cook the food placed in the cooking appliance; in the standby mode, the components included in the cooking appliance may be in a standby state, the cooking appliance may receive a control instruction input by a user, and switch the working mode of the cooking appliance based on the control instruction. Exemplarily, the cooking appliance may receive a first heat preservation instruction input by a user in the standby mode, and keep the food placed in the cooking appliance warm in response to the first heat preservation instruction.

[0055] As an implementable manner, the cooking appliance may receive a first keep warm instruction input by a user, wherein the first keep warm instruction may carry a preset keep warm time and a target keep warm time. Accordingly, upon receiving the first keep warm instruction, the cooking appliance may determine that it is necessary to control the cooking appliance to enter a keep warm mode. Furthermore, the cooking appliance may parse the first keep warm instruction to obtain the preset keep warm temperature and the target keep warm time carried by the first keep warm instruction, and control the heating parameters of the three heat sources included in the cooking appliance based on the preset keep warm temperature and the target keep warm time to keep the food warm.

[0056] As another practicable manner, the target heat preservation time and preset heat preservation temperature corresponding to the cooking appliance are fixed. The cooking appliance can receive a second heat preservation instruction input by the user, wherein the second heat preservation instruction does not carry the target heat preservation time and the preset heat preservation temperature. Accordingly, the cooking appliance can determine that it is necessary to control the cooking appliance to enter the heat preservation mode upon receiving the second heat preservation instruction. Further, the cooking appliance can obtain the preset target heat preservation time and the preset heat preservation temperature, and control the heating parameters of the three heat sources included in the cooking appliance based on the fixed target heat preservation time and the preset heat preservation temperature to keep the food warm.

[0057] In some embodiments, when the cooking appliance is in the keep warm mode, the cooking appliance can determine a preset keep warm temperature and a target keep warm time. Optionally, the target keep warm time can be set by the user or obtained through third-party experimental data, such as 1 hour, 2 hours, 6 hours, etc.; the preset keep warm temperature can be set by the user or obtained through third-party experimental data, such as 20°C, 50°C, 80°C, etc., which are not limited here.

[0058] Step S120: Within the target heat preservation time, the operating temperature in the heating chamber is detected by the temperature detection device.

[0059] In some embodiments, after the cooking appliance determines the target heat preservation time, it can detect the working temperature in the heating cavity through the temperature detection device within the target heat preservation time. Specifically, within the target heat preservation time, the cooking appliance can detect the first measured temperature near the first heating device through the first temperature detection device, and use the first measured temperature as the working temperature in the heating cavity; the cooking appliance can also detect the second measured temperature near the third heating device through the second temperature detection device, and use the second measured temperature as the working temperature in the heating cavity.

[0060] The cooking appliance may also use the average value, median value, arithmetic mean value, etc. of the first measured temperature and the second detected temperature as the working temperature in the heating cavity.

[0061] Step S120: According to the target size relationship between the working temperature and the preset insulation temperature, the heating parameters of the first heating device, the second heating device and the third heating device are controlled to perform insulation.

[0062] In some embodiments, after the cooking appliance determines the preset heat preservation temperature and the working temperature in the heating chamber, the heating parameters of the first heating device, the second heating device, and the third heating device included in the cooking appliance can be controlled according to the target size relationship between the working temperature and the preset heat preservation temperature to keep warm. The target size relationship between the working temperature and the preset heat preservation temperature may include that the working temperature is greater than the preset heat preservation temperature, the working temperature is less than the preset heat preservation temperature, etc.

[0063] As an practicable manner, the first heating device may include a heating tube, and further, the cooking appliance may control the heating parameters of the heating tube, such as heating power, heating time, etc. Exemplarily, the cooking appliance may control the heating tube to heat based on a first preset power, wherein the first preset power may include the maximum power of the heating tube, and the cooking appliance may also control the heating time of the heating tube, such as controlling the heating tube to heat at the maximum power based on the first periodic interval. Wherein, heating at the maximum power may be understood as heating at full power.

[0064] As another practicable manner, the second heating device may include a heating belt, and further, the cooking appliance may control heating parameters of the heating belt, such as heating power, heating time, etc. Exemplarily, the cooking appliance may control the heating belt to heat at a first preset power, wherein the first preset power may include the maximum power of the heating belt, or may include a power lower than the maximum power of the heating belt.

[0065] As another practicable manner, the third heating device may include an infrared dish, and further, the cooking appliance may control heating parameters of the infrared dish, such as heating power, heating time, etc. Exemplarily, the cooking appliance may control the infrared tube dish to heat at a first preset power, wherein the first preset power may include the maximum power of the infrared dish, and the cooking appliance may also control the heating time of the infrared dish, such as controlling the infrared tube to heat at the maximum power based on the second periodic interval.

[0066] Optionally, the first period and the second period may be equal or unequal, wherein the first period may be set independently by the user or obtained through third-party experimental data, such as heating for 10 seconds at an interval of 5 seconds, etc.; the second period may be set independently by the user or obtained through third-party experimental data, such as heating for 10 seconds at an interval of 5 seconds, etc., which is not limited here.

[0067] In some embodiments, the cooking appliance can control the hot air blower to rotate during the process of entering the keep warm mode to circulate hot air and increase the rate of heat flow. Exemplarily, during the process of the cooking appliance entering the keep warm mode, the hot air blower can be controlled to rotate at a low gear, a medium gear, or a high gear.

[0068] In some embodiments, when the cooking appliance enters the keep warm mode, the cooking appliance can control the indicator light included in the cooking appliance to light up, and can also display the time of entering the keep warm mode on the screen included in the cooking appliance. It can also display the keep warm countdown on the screen included in the cooking appliance according to the preset keep warm time and the time when the cooking appliance enters the keep warm mode. It can also obtain the average value of the temperature above the heating cavity and the temperature of the bottom wall of the frying barrel in real time, and display the average value on the screen included in the cooking appliance to improve the user experience.

[0069] A cooking method provided by an embodiment of the present application arranges a first heating device, a second heating device and a third heating device at different positions in a heating cavity, obtains the working temperature in the heating cavity in real time through a temperature detection device, and determines a preset insulation temperature and a target insulation time when the cooking appliance is in insulation mode. Within the target insulation time, the three heat sources included in the cooking appliance are controlled to heat with different heating parameters according to the relationship between the working temperature of the cooking appliance and the preset insulation temperature for insulation, thereby improving the uniformity of the temperature in the heating cavity of the cooking appliance and enhancing the insulation performance of the cooking appliance.

[0070] See also Figure 5 , Figure 5 The flow chart of the heat preservation method of a cooking utensil provided in one embodiment of the present application is shown. The method is applied to the above cooking utensil. Figure 5 The process shown is described in detail, and the insulation method may specifically include the following steps:

[0071] Step S210: If it is detected that the cooking appliance has finished cooking, the cooking process enters a keep-warm mode, and the preset keep-warm temperature and the target keep-warm time are determined.

[0072] In some embodiments, the cooking appliance may include a cooking mode, and when the cooking appliance detects the end of the cooking mode, the cooking appliance may automatically control the cooking appliance to enter a keep-warm mode. The cooking appliance may detect whether the cooking mode of the cooking appliance has ended by, for example, determining that cooking has ended if the cooking appliance detects that the countdown of the cooking time of the cooking mode is 0, or determining that cooking has ended if the cooking mode is detected to be interrupted for a period longer than a preset interruption period.

[0073] In some embodiments, if the cooking appliance detects that cooking is complete, it can enter a keep warm mode and determine a preset keep warm temperature and a target keep warm time. The cooking appliance can be pre-set with keep warm temperatures and keep warm times corresponding to different cooking menus. Furthermore, the cooking appliance can also determine the cooking menu corresponding to the cooking when determining that cooking is complete. Furthermore, the cooking appliance can determine the keep warm time corresponding to the cooking menu as the target keep warm time, and can also determine the keep warm temperature corresponding to the cooking menu as the preset keep warm temperature.

[0074] As an implementable method, a fixed target keeping warm time and a preset keeping warm temperature can be pre-set in the cooking appliance. Furthermore, if the cooking appliance detects that the cooking appliance has finished cooking, it can automatically enter the keeping warm mode, and obtain the pre-set fixed preset keeping warm temperature and target keeping warm time to keep warm. That is, the cooking appliance can automatically enter the keeping warm mode after finishing cooking, and automatically obtain the default target keeping warm time and preset keeping warm temperature.

[0075] Step S220: Within the target heat preservation time, the operating temperature in the heating chamber is detected by the temperature detection device.

[0076] Step S230: According to the target size relationship between the working temperature and the preset insulation temperature, the heating parameters of the first heating device, the second heating device and the third heating device are controlled to perform insulation.

[0077] For the specific description of step S220 to step S230, please refer to the previous specific description of step S120 to step S130, which will not be repeated here.

[0078] Compared with the heat preservation method of the cooking utensil provided in one embodiment of the present application, Figure 4 According to the method shown, this embodiment can also enter the keep-warm mode if it is detected that the cooking appliance has finished cooking, and determine the preset keep-warm temperature and the target keep-warm time, and then automatically control the cooking appliance to enter the keep-warm mode after the cooking appliance has finished cooking, and control the heating parameters of the three heat sources arranged at different positions in the heating cavity of the cooking appliance during the cooking appliance is in the keep-warm mode, thereby ensuring the uniformity of the temperature in the heating cavity of the cooking appliance and improving the keep-warm performance of the cooking appliance.

[0079] See also Figure 6 , Figure 6 The flow chart of the heat preservation method of a cooking utensil provided in one embodiment of the present application is shown. The method is applied to the above cooking utensil. Figure 6 The process shown in the figure is described in detail, and the heat preservation method of the cooking utensil may specifically include the following steps:

[0080] Step S310: If a keep-warm instruction is detected, enter a keep-warm mode in response to the keep-warm instruction, obtain the keep-warm temperature indicated by the keep-warm instruction as the preset keep-warm temperature, and obtain the keep-warm time indicated by the keep-warm instruction as the target keep-warm time.

[0081] In some embodiments, the cooking appliance may receive a keep warm instruction input by a user, or may receive a target keep warm time and a preset keep warm temperature input by a user. Optionally, the keep warm instruction may carry the target keep warm time and the preset keep warm temperature input by the user. Further, if the cooking appliance detects the keep warm instruction, it may enter a keep warm mode in response to the keep warm instruction, and obtain the keep warm temperature indicated by the keep warm instruction as the preset keep warm temperature, and obtain the keep warm time indicated by the keep warm instruction as the target keep warm time.

[0082] Exemplarily, the cooking appliance may generate and display a function selection interface, wherein the function selection interface may include a keep warm function control, a cooking function control, a cleaning function control, etc. Further, the cooking appliance may determine whether to enter a keep warm mode according to the situation in which the keep warm function control is selected. Optionally, the user may manually select the keep warm function control of the cooking appliance, or may set a preset keep warm temperature and a target keep warm time in the process of selecting the keep warm function control, so that the cooking appliance enters a keep warm mode, and controls the heating parameters of the three heat sources included in the cooking appliance based on the preset keep warm temperature and the target keep warm time.

[0083] As an implementable manner, the cooking appliance may include a keep warm button, and the user may manually press the keep warm button and set a preset keep warm temperature and a target keep warm time so that the cooking appliance enters a keep warm mode.

[0084] As another practicable manner, the cooking appliance can be connected to an associated electronic device based on wireless communication technology (such as Bluetooth, WiFi, Zigbee technology, etc.). Further, the user can control the cooking appliance to enter the keep warm mode on the associated electronic device, and set a preset keep warm temperature and a target keep warm time, so that the cooking appliance enters the keep warm mode.

[0085] In some embodiments, when the cooking appliance enters the keep-warm mode, a keep-warm reminder message may be generated. The keep-warm reminder message may be used to remind the cooking appliance that it is in the keep-warm mode, to remind the keep-warm countdown of the cooking appliance, to remind the preset keep-warm temperature of the cooking appliance, or to remind the current temperature of the cooking cavity of the cooking appliance, which is not limited here.

[0086] Optionally, the keep warm prompt information may include indicator light prompt information, audio prompt information, interface display prompt information, etc., which are not limited here. Exemplarily, when the cooking appliance enters the keep warm mode, the keep warm indicator light may be controlled to light up, and a preset keep warm temperature and a keep warm countdown based on a target keep warm time may be displayed on a screen included in the cooking appliance.

[0087] Step S320: Within the target heat preservation time, the operating temperature in the heating chamber is detected by the temperature detection device.

[0088] Step S330: According to the target size relationship between the working temperature and the preset insulation temperature, the heating parameters of the first heating device, the second heating device and the third heating device are controlled to perform insulation.

[0089] For the specific description of step S320 to step S330, please refer to the previous specific description of step S120 to step S130, which will not be repeated here.

[0090] Compared with the heat preservation method of the cooking utensil provided in one embodiment of the present application, Figure 4 According to the method shown, the present embodiment can also enter the keep-warm mode in response to the keep-warm instruction if a keep-warm instruction is detected, and obtain the keep-warm temperature indicated by the keep-warm instruction as the preset keep-warm temperature, and obtain the keep-warm time indicated by the keep-warm instruction as the target keep-warm time, and then determine the target keep-warm time and the preset keep-warm temperature according to the keep-warm instruction. When the cooking appliance is in the keep-warm mode, the heating parameters of the three heat sources arranged at different positions in the heating cavity of the cooking appliance are controlled, thereby ensuring the uniformity of the temperature in the heating cavity of the cooking appliance and improving the keep-warm performance of the cooking appliance.

[0091] See also Figure 7 , Figure 7 The flowchart of the heat preservation method of a cooking appliance provided by an embodiment of the present application is shown. The method is applied to the above-mentioned cooking appliance, wherein the temperature detection device in the cooking appliance may include a first temperature detection device and a second temperature detection device, wherein the first temperature detection device is used to detect a first measured temperature near the first heating device, and the second temperature detection device is used to detect a second measured temperature near the third heating device. Figure 7 The process shown in the figure is described in detail, and the heat preservation method of the cooking utensil may specifically include the following steps:

[0092] Step S410: In response to the cooking appliance being in the keep-warm mode, determining a preset keep-warm temperature and a target keep-warm time.

[0093] For the specific description of step S410, please refer to the specific description of step S110 above, which will not be repeated here.

[0094] Step S420: obtaining a first magnitude relationship between the first measured temperature and a first preset insulation temperature, and / or obtaining a second magnitude relationship between the second measured temperature and a second preset insulation temperature.

[0095] In some embodiments, the temperature detection device includes a first temperature detection device and a second temperature detection device, the first temperature detection device can be used to detect a first measured temperature near the first heating device, and the second temperature detection device can be used to detect a second measured temperature near the third heating device.

[0096] In some embodiments, after the cooking appliance obtains a first measured temperature, the first temperature can be compared with a first preset insulation temperature to obtain a first size relationship; after the cooking appliance obtains a second measured temperature, the second measured temperature can be compared with a second preset insulation temperature to obtain a second size relationship.

[0097] The first preset insulation temperature can be calculated by the preset insulation temperature and the first adjustment temperature; the second preset insulation temperature can be calculated by the preset insulation temperature and the second adjustment temperature. Exemplarily, the first preset insulation temperature = the preset insulation temperature - the first adjustment temperature, the second preset insulation temperature = the preset insulation temperature - the second adjustment temperature; wherein the second adjustment temperature can be greater than the first adjustment temperature.

[0098] Exemplarily, the first temperature detection device includes an NTC detection circuit, and the second temperature detection device includes a thermocouple detection circuit. Considering that the temperature detection deviation of the thermocouple detection circuit is larger than the temperature detection deviation of the NTC detection circuit, in this embodiment, the cooking appliance can set the NTC insulation temperature offset temperature, which can be understood as the first adjustment temperature, such as the first adjustment temperature can be set to above 1°C; the cooking appliance can set the thermocouple first impulse offset temperature, which can be understood as the second adjustment temperature, such as the second adjustment temperature can be set to above 10°C. Among them, the second adjustment temperature can be greater than the first adjustment temperature.

[0099] Step S430: controlling heating parameters of the first heating device, the second heating device, and the third heating device according to the first size relationship and / or the second size relationship.

[0100] In some embodiments, after the cooking utensil obtains the first size relationship and / or the second size relationship, the heating parameters of the first heating device, the second heating device and the third heating device can be controlled according to the first size relationship and / or the second size relationship to keep warm.

[0101] In some embodiments, the cooking appliance can control the first heating device to generate heat at a first preset power for a first preset time at a first time interval, and / or the second heating device to generate heat at a second preset power, and / or the third heating device to generate heat at a second preset power for a second preset time at a second time interval, in response to the first measured temperature being less than the first preset insulation temperature, and / or the second measured temperature being less than the second preset insulation temperature, to keep warm. The first preset power can correspond to a power of the maximum power, full power, etc. of the first heating device; the second preset power can correspond to a power of the maximum power, full power, etc. of the second heating device; and the third preset power can correspond to a power of the maximum power, full power, etc. of the third heating device.

[0102] The first time interval may be pre-set in the cooking appliance, and the cooking appliance may also obtain the first time interval from an associated electronic device or the cloud through wireless communication technology. The first time interval may be set by the user or obtained through third-party experimental data, which is not limited here. For example, the first time interval is 5 seconds, 6 seconds, etc.

[0103] The first preset time length can be pre-set in the cooking appliance, and the cooking appliance can also obtain the first preset time length from an associated electronic device or the cloud through wireless communication technology. The first preset time length can be set by the user independently or obtained through third-party experimental data, which is not limited here. For example, the first preset time length is 10 seconds, 11 seconds, etc.

[0104] Among them, the second preset power can be greater than the first power threshold. For example, the first power threshold is 200 watts. After determining the target insulation time and the preset insulation temperature, the cooking appliance can control the second heating device to generate heat based on a power of 500 watts within the target insulation time in response to the first measured temperature being less than the first preset insulation temperature and / or the second measured temperature being less than the second preset insulation temperature.

[0105] Exemplarily, the cooking appliance can control the first heating device to heat at a first preset power based on the (x1, y1) interval in response to the first measured temperature being less than the first preset heat preservation temperature and / or the second measured temperature being less than the second preset heat preservation temperature within the target heat preservation time. Wherein, x1 represents the first preset heating time, y1 represents the heating cycle, and (y1-x1) represents the first time interval. Wherein, x1 can be set to more than 5 seconds, or more than 0 seconds; y1 can be set to more than 10 seconds.

[0106] The second time interval can be pre-set in the cooking appliance, or obtained from an associated electronic device or cloud through wireless communication technology. The second time interval can be set by the user or obtained through third-party experimental data; the method for obtaining the second time interval can be the same as or different from the method for obtaining the first time interval, and the first time interval and the second time interval can be equal or different, which is not limited here. Exemplarily, the second time interval is 5 seconds, 6 seconds, etc.

[0107] The second preset duration can be pre-set in the cooking appliance, or obtained from an associated electronic device or the cloud through wireless communication technology. The second preset duration can be set by the user independently, or obtained through third-party experimental data, which is not limited here; the method for obtaining the second preset duration can be the same as or different from the method for obtaining the first preset duration, and the first preset duration can be equal to or different from the preset duration, which is not limited here. Exemplarily, the second preset duration is 10 seconds, 11 seconds, etc.

[0108] Exemplarily, the cooking appliance can control the third heating device to heat based on the interval (x2, y2) in response to the first measured temperature being less than the first preset heat preservation temperature and / or the second measured temperature being less than the second preset heat preservation temperature within the target heat preservation time. Wherein, x2 represents the second preset heating time, y2 represents the heating cycle, and (y2-x2) represents the second time interval. Wherein, x2 can be set to more than 5 seconds, or more than 0 seconds; y2 can be set to more than 10 seconds.

[0109] Among them, the cooking appliance can control the first heating device to heat at a first preset power and a first time interval for a first preset time, the second heating device to heat at a second preset power, and the third heating device to heat at a third preset power and a second time interval for a second preset time in response to the first measured temperature being less than the first preset insulation temperature and / or the second measured temperature being less than the second preset insulation temperature within the target insulation time to keep warm.

[0110] Among them, after the cooking appliance controls the first heating device to heat at a first preset power and at a first time interval for a first preset period of time, and / or the second heating device to heat at a second preset power, and / or the third heating device to heat at a third preset power to keep warm, the first measured temperature and the second measured temperature can also be obtained in real time, and in response to the first measured temperature being not less than the first preset insulation temperature, and / or the second measured temperature being not less than the second preset insulation temperature, the first heating device, the second heating device and the third heating device can be controlled to heat in a target insulation mode.

[0111] Among them, the target heat preservation mode includes the first heating device heating at a fourth preset power and a third time interval for a third preset time, and / or, the second heating device heating at a fifth preset power and a fourth time interval for a fourth preset time, and / or, the third heating device heating at a sixth preset power and a fifth time interval for a fifth preset time: or the first heating device heating at a seventh preset power and a sixth time interval for a sixth preset time, and / or, the second heating device stops heating, and / or, the third heating device heating at an eighth preset power and a seventh time interval for a seventh preset time; or the first heating device heating at a ninth preset power and a eighth time interval for a The first heating device heats up at an interval of eight preset time periods, and / or the second heating device heats up at a ninth time interval at a tenth preset power for a ninth preset time period, and / or the third heating device stops heating; or the first heating device stops heating, and / or the second heating device heats up at an eleventh preset power for a tenth preset time period at a tenth time interval, and / or the third heating device heats up at a twelfth preset power for an eleventh preset time period at an eleventh time interval; or the first heating device heats up at a thirteenth preset power for a twelfth preset time period at a twelfth time interval, and / or the second heating device stops heating, and / or the third heating device stops heating.

[0112] Exemplarily, three heat sources all participate in the insulation process in the target insulation mode of the cooking appliance. The first heating device is a heating tube, the second heating device is a heating belt, and the third heating device is an infrared tube. The cooking appliance can control the heating tube to perform interval heating at a fourth preset power (x3, y3) in response to the first measured temperature being not less than the first preset insulation temperature and / or the second measured temperature being not less than the second preset insulation temperature, after the cooking appliance controls the first heating device to generate heat at a first preset power at a first time interval for a first preset duration, the second heating device to generate heat at a second preset power, and the third heating device to generate heat at a third preset power, where x3 is the heating-on time, i.e., the third preset duration, which can be set to more than 5 seconds, and y3 is the heating cycle, which can be set to 10 seconds. In the above, y3-x3 can be the third time interval; and the heat-generating belt can be controlled to heat (x4, y4) at the fifth preset power, x4 is the heating start-up time, that is, the fourth preset duration, which can be set to more than 5 seconds, y4 is the heating cycle, which can be set to more than 10 seconds, and y4-x4 can be the fourth time interval; and the infrared tube can be controlled to heat (x5, y5) at the sixth preset power, x5 is the heating start-up time, that is, the fifth preset duration, which can be set to more than 5 seconds, y5 is the heating cycle, which can be set to more than 10 seconds, and y5-x5 can be the fifth time interval.

[0113] The cooking appliance can also rotate the fan at a medium or low gear to ensure the uniformity of heat in the heating chamber, reduce the fluctuation of the temperature in the heating chamber, and improve the heat preservation effect of the cooking appliance.

[0114] Exemplarily, the first heating device and the third heating device participate in the heat preservation process in the target heat preservation mode of the cooking appliance. The first heating device is a heating tube, the second heating device is a heat-generating belt, and the third heating device is an infrared tube. The cooking appliance can control the first heating device to heat at a first preset power at a first time interval for a first preset time, the second heating device to heat at a second preset power, and the third heating device to heat at a third preset power, in response to the first measured temperature being not less than the first preset heat preservation temperature, and / or the second measured temperature being not less than the second preset heat preservation temperature, control the heating tube to heat at a seventh preset power for an interval (x6, y6), x6 is the heating start time, generally set to more than 5 seconds, y6 is the heating cycle, generally set to more than 10 seconds; and control the heat-generating belt not to work; and control the infrared tube to heat at an eighth preset power for (x7, y7), x7 is the heating start time, generally set to more than 5 seconds, y7 is the heating cycle, generally set to more than 10 seconds.

[0115] The cooking appliance can also control the fan to rotate at a medium or low gear to maintain the heating temperature in the heating cavity to keep the food warm.

[0116] Exemplarily, the first heating device and the second heating device participate in the heat preservation process in the target heat preservation mode of the cooking appliance. The first heating device is a heating tube, the second heating device is a heat-generating belt, and the third heating device is an infrared tube. The cooking appliance can control the first heating device to heat at a first preset power at a first time interval for a first preset time, the second heating device to heat at a second preset power, and the third heating device to heat at a third preset power, in response to the first measured temperature being not less than the first preset heat preservation temperature, and / or the second measured temperature being not less than the second preset heat preservation temperature, to control the heating tube to heat at a ninth preset power for an interval (x8, y8), x8 is the heating on time, generally set to more than 5 seconds, y8 is the heating cycle, generally set to more than 10 seconds; and control the infrared tube to heat at a tenth preset power for (x9, y9), x9 is the heating on time, generally set to more than 5 seconds, y9 is the heating cycle, generally set to more than 10 seconds; and control the infrared tube not to work.

[0117] The cooking appliance can also control the fan to rotate at a medium or low gear to maintain the heating temperature in the heating cavity to keep the food warm.

[0118] Exemplarily, the second heating device and the third heating device participate in the heat preservation process of the target heat preservation mode of the cooking appliance. The first heating device is a heating tube, the second heating device is a heat-generating belt, and the third heating device is an infrared tube. The cooking appliance can control the first heating device to heat at a first preset power at a first time interval for a first preset time, the second heating device to heat at a second preset power, and the third heating device to heat at a third preset power, and in response to the first measured temperature being not less than the first preset heat preservation temperature, and / or the second measured temperature being not less than the second preset heat preservation temperature, control the heating tube not to work, and the heat-generating belt to heat at an interval (x10, y10) at an eleventh preset power, where x10 is the heating on time, generally set to more than 5 seconds, and y10 is the heating cycle, generally set to more than 10 seconds; and control the infrared tube to heat at a twelfth preset power (x11, y11), where x11 is the heating on time, generally set to more than 5 seconds, and y11 is the heating cycle, generally set to more than 10 seconds.

[0119] The cooking appliance can also control the fan to rotate at a medium or low gear to maintain the heating temperature in the heating cavity to keep the food warm.

[0120] Exemplarily, the first heating device alone participates in the heat preservation process in the target heat preservation mode of the cooking appliance. The first heating device is a heating tube, the second heating device is a heat-generating belt, and the third heating device is an infrared tube. The cooking appliance can control the heating tube to heat at a thirteenth preset power for an interval (x12, y12) in response to the first measured temperature being not less than the first preset heat preservation temperature and / or the second measured temperature being not less than the second preset heat preservation temperature, after the cooking appliance controls the first heating device to heat at a first preset power at a first time interval for a first preset time, the second heating device to heat at a second preset power, and the third heating device to heat at a third preset power, wherein x12 is the heating on time, which is generally set to more than 5 seconds, and y12 is the heating cycle, which is generally set to more than 10 seconds; and the heat-generating belt and the infrared tube are controlled not to work.

[0121] The cooking appliance can also control the fan to rotate at a medium or low gear to maintain the heating temperature in the heating cavity to keep the food warm.

[0122] Among them, the heating power of the second heating device participating in the insulation process of the target insulation mode can be less than the second preset power of the second heating device to maintain the constant insulation temperature in the heating cavity, thereby improving the insulation performance of the cooking utensil while saving the power consumption of the cooking utensil for keeping food warm.

[0123] In some embodiments, after the cooking appliance controls the first heating device, the second heating device, and the third heating device to heat in the target heat preservation mode, the cooking appliance may also control the first heating device, and / or the second heating device to stop heating, and / or the third heating device to stop heating in response to the first measured temperature being greater than the third preset heat preservation temperature, and / or the second measured temperature being greater than the fourth preset heat preservation temperature. The third preset heat preservation temperature is calculated by the preset heat preservation temperature and the third adjustment temperature, and the fourth preset heat preservation temperature is calculated by the preset heat preservation temperature and the fourth adjustment temperature.

[0124] Exemplarily, the third preset insulation temperature = preset insulation temperature - third adjustment temperature, and the fourth preset insulation temperature = preset insulation temperature - fourth adjustment temperature; wherein the fourth adjustment temperature may be greater than the third adjustment temperature.

[0125] As an implementable manner, the first temperature detection device includes an NTC detection circuit, and the second temperature detection device includes a thermocouple detection circuit. Considering that the temperature detection deviation of the thermocouple detection circuit is larger than the temperature detection deviation of the NTC detection circuit, in this embodiment, the cooking appliance can set an offset temperature of the NTC set temperature, and the third adjustment temperature can be understood, such as the third adjustment temperature can be set to above -15°C; the cooking appliance can set an offset temperature of the thermocouple set temperature, and the fourth adjustment temperature can be understood, such as the fourth adjustment temperature can be set to above -5°C. Among them, the fourth adjustment temperature can be greater than the third adjustment temperature.

[0126] Exemplarily, after the cooking appliance controls the first heating device, the second heating device and the third heating device to heat in the target insulation mode, the cooking appliance can control the first heating device, the second heating device and the third heating device to stop heating in response to the first measured temperature being greater than the third preset insulation temperature and the second measured temperature being greater than the fourth preset insulation temperature; and the hot air blower can be controlled to blow air at a high level to speed up the dissipation of heat. Among them, the first measured temperature being greater than the third preset insulation temperature and the second measured temperature being greater than the fourth preset insulation temperature can be understood as the insulation process of the cooking appliance exceeding the insulation temperature threshold. In order to ensure the taste of the insulation food and avoid the food from being burnt, the cooking appliance can control the three heat sources to stop heating to quickly cool down and improve the insulation performance of the cooking appliance.

[0127] In this embodiment, if the time for controlling the cooking appliance to enter the keep-warm mode meets the target keep-warm time, the cooking appliance can be controlled to enter the standby mode, that is, the first heating device, the second heating device and the third heating device can be controlled to stop heating.

[0128] It can be understood that in this embodiment, the cooking appliance keeps food warm through the coordinated heating of the first heating device, the second heating device and the third heating device within the target insulation time, and controls the heating parameters of the three heat sources in combination with the preset insulation temperature and the working temperature in the heating cavity, thereby improving the accuracy of the insulation temperature control, improving the insulation performance of the cooking appliance, and improving the user experience.

[0129] Compared with the heat preservation method of the cooking utensil provided in one embodiment of the present application, Figure 4 The insulation method shown in the present embodiment can also obtain a first size relationship between a first measured temperature near the first heating device and a first preset insulation temperature within a target insulation time, and / or obtain a second size relationship between a second measured temperature near the third heating device and a second preset insulation temperature; according to the first size relationship, and / or the second size relationship, control the heating parameters of the first heating device, the second heating device and the third heating device to perform insulation, and then control the heating parameters of the three heat sources arranged at different positions in the heating cavity according to the size relationship between the working temperature in the heating cavity and the preset insulation temperature within the target insulation time, thereby improving the temperature control accuracy of the cooking appliance in the insulation mode and improving the insulation performance of the whole machine.

[0130] See also Figure 8 , Figure 8 The module block diagram of the heat preservation device of the cooking appliance provided in one embodiment of the present application is shown. The cooking appliance includes a heating chamber, a first heating device, a second heating device, a third heating device and a temperature detection device, wherein the temperature detection device is used to detect the working temperature in the heating chamber. Figure 8 The process shown in the figure is described in detail, the heat preservation device 200 of the cooking appliance includes: a preset heat preservation temperature and a target heat preservation time determination module 210, a working temperature detection module 220 and a heat preservation control module 230, wherein:

[0131] The preset keeping temperature and target keeping time determining module 210 is used to determine the preset keeping temperature and target keeping time in response to the cooking appliance being in the keeping temperature mode.

[0132] The working temperature detection module 220 is used to detect the working temperature in the heating chamber through the temperature detection device within the target insulation time.

[0133] The heat preservation control module 230 is used to control the heating parameters of the first heating device, the second heating device and the third heating device according to the target size relationship between the working temperature and the preset heat preservation temperature to perform heat preservation.

[0134] Further, the temperature detection device includes a first temperature detection device and a second temperature detection device, the first temperature detection device is used to detect a first measured temperature near the first heating device, and the second temperature detection device is used to detect a second measured temperature near the third heating device. The heat preservation control module 230 may include: a unit for obtaining a relationship between a working temperature and a preset heat preservation temperature and a heat preservation control subunit, wherein:

[0135] The unit for obtaining the relationship between the working temperature and the preset insulation temperature is used to obtain a first relationship between the first measured temperature and the first preset insulation temperature, and / or to obtain a second relationship between the second measured temperature and the second preset insulation temperature. The first preset insulation temperature is calculated by the preset insulation temperature and the first adjustment temperature; the second preset insulation temperature is calculated by the preset insulation temperature and the second adjustment temperature.

[0136] The heat preservation control subunit is used to control the heating parameters of the first heating device, the second heating device and the third heating device according to the first size relationship and / or the second size relationship to perform heat preservation.

[0137] Furthermore, the heat preservation control module 230 may also include: a first heat preservation control unit, wherein:

[0138] A first insulation control unit is used to control the first heating device to generate heat at a first preset power and at a first time interval for a first preset time length in response to the first measured temperature being less than the first preset insulation temperature and / or the second measured temperature being less than the second preset insulation temperature, and / or the second heating device to generate heat at a second preset power, and / or the third heating device to generate heat at a second time interval for a second preset time length at a third preset power to perform insulation.

[0139] Further, after controlling the first heating device to heat at a first preset power at a first time interval for a first preset time length, and / or the second heating device to heat at a second preset power, and / or the third heating device to heat at a third preset power at a second time interval for a second preset time length to keep warm, the heat preservation control module 230 may further include: a second heat preservation control unit, wherein:

[0140] A second insulation control unit is used to control the first heating device, the second heating device and the third heating device to heat in a target insulation mode in response to the first measured temperature being not less than the first preset insulation temperature and / or the second measured temperature being not less than the second preset insulation temperature.

[0141] Further, the heat preservation control module 230 may also include: a first target heat preservation mode unit, a second target heat preservation mode, a third target heat preservation mode, a fourth target heat preservation mode or a fifth target heat preservation mode, wherein:

[0142] The first target insulation mode unit is used to control the first heating device to heat at a fourth preset power and a third time interval for a third preset time period, and / or the second heating device to heat at a fifth preset power and a fourth time interval for a fourth preset time period, and / or the third heating device to heat at a sixth preset power and a fifth time interval for a fifth preset time period.

[0143] The second target insulation mode unit is used to control the first heating device to heat at a seventh preset power and a sixth time interval for a sixth preset time period, and / or the second heating device to stop heating, and / or the third heating device to heat at an eighth preset power and a seventh time interval for a seventh preset time period.

[0144] The third target insulation mode unit is used to control the first heating device to heat at a ninth preset power and an eighth time interval for an eighth preset time period, and / or the second heating device to heat at a tenth preset power and a ninth time interval for a ninth preset time period, and / or the third heating device to stop heating.

[0145] The fourth target insulation mode unit is used to control the first heating device to stop heating, and / or the second heating device to heat at an eleventh preset power and a tenth preset time interval for a tenth preset time duration, and / or the third heating device to heat at a twelfth preset power and an eleventh preset time interval for an eleventh preset time duration.

[0146] The fifth target heat preservation mode is used to control the first heating device to heat at a thirteenth preset power and a twelfth preset time interval, and / or the second heating device stops heating, and / or the third heating device stops heating.

[0147] Further, after controlling the first heating device, the second heating device and the third heating device to heat in the target heat preservation mode, the heat preservation control module 230 may further include: a third heat preservation control unit, wherein:

[0148] A third insulation control unit is used to control the first heating device, and / or the second heating device to stop heating, and / or the third heating device to stop heating in response to the first measured temperature being greater than a third preset insulation temperature, and / or the second measured temperature being greater than a fourth preset insulation temperature; wherein the third preset insulation temperature is calculated by the preset insulation temperature and the third adjustment temperature, and the fourth preset insulation temperature is calculated by the preset insulation temperature and the fourth adjustment temperature.

[0149] Furthermore, the preset heat preservation temperature and target heat preservation time determination module 210 may include: an automatic heat preservation unit after cooking is completed, wherein:

[0150] The automatic heat preservation unit at the end of cooking is used to enter the heat preservation mode if it is detected that the cooking appliance has finished cooking, and determine the preset heat preservation temperature and the target heat preservation time.

[0151] Furthermore, the preset insulation temperature and target insulation time determination module 210 may include: an insulation instruction response unit, wherein:

[0152] The keep warm instruction response unit is used to enter the keep warm mode in response to the keep warm instruction if a keep warm instruction is detected, and obtain the keep warm temperature indicated by the keep warm instruction as the preset keep warm temperature, and obtain the keep warm time indicated by the keep warm instruction as the target keep warm time.

[0153] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and modules can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0154] In several embodiments provided in the present application, the coupling between modules may be electrical, mechanical or other forms of coupling.

[0155] In addition, each functional module in each embodiment of the present application can be integrated into a processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or software functional modules.

[0156] See also Figure 8 , which shows a structural block diagram of a cooking appliance provided in an embodiment of the present application. The cooking appliance 100 may be a cooking appliance such as an air fryer, an oven, a microwave oven, etc. that can run an application. The cooking appliance 100 in the present application may include a heating chamber 101, and the cooking appliance 100 is also provided with a first heating device 30, a second heating device 40, a third heating device 50 and a temperature detection device 70, and the temperature detection device 70 is used to detect the working temperature in the heating chamber 101. The cooking appliance 100 may also include: one or more processors 110, a memory 120 and one or more applications. Among them, one or more applications may be stored in the memory 120 and configured to be executed by one or more processors 110, and one or more programs are configured to execute the method described in the aforementioned method embodiment.

[0157] The processor 110 may include one or more processing cores. The processor 110 uses various interfaces and lines to connect various parts of the entire cooking appliance 100, and executes various functions and processes data of the cooking appliance 100 by running or executing instructions, programs, code sets or instruction sets stored in the memory 120, and calling data stored in the memory 120. Optionally, the control component 60 can be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). The processor 110 can integrate one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), and a modem. Among them, the CPU mainly processes the operating system, user interface, and application programs; the GPU is responsible for rendering and drawing the content to be displayed; and the modem is used to process wireless communication. It can be understood that the above-mentioned modem may not be integrated into the processor 110, but may be implemented separately through a communication chip.

[0158] The memory 120 may include a random access memory (RAM) or a read-only memory (ROM). The memory 120 may be used to store instructions, programs, codes, code sets or instruction sets. The memory 120 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the following various method embodiments, etc. The data storage area may also store data (such as audio data, temperature data, time data) created by the cooking appliance 100 during use.

[0159] In some embodiments, the processor 110 may include a control component 60, which is respectively connected to a first heating device 30, a second heating device 40, a third heating device 50 and a temperature detection device 70 included in the cooking appliance 100, and is used to determine a preset insulation temperature and a target insulation time in response to the cooking appliance 100 being in insulation mode; within the target insulation time, the working temperature in the heating chamber 101 is detected by the temperature detection device 70; according to the target size relationship between the working temperature and the preset insulation temperature, the heating parameters of the first heating device 30, the second heating device 40 and the third heating device 50 are controlled to perform insulation.

[0160] See also Fig. 9 , which shows a structural block diagram of a computer-readable storage medium provided in an embodiment of the present application. The computer-readable medium 300 stores program codes, which can be called by a processor to execute the method described in the above method embodiment.

[0161] The computer readable storage medium 300 can be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read-only memory), an EPROM, a hard disk, or a ROM. Optionally, the computer readable storage medium 300 includes a non-transitory computer-readable storage medium. The computer readable storage medium 300 has storage space for program code 310 that performs any method steps in the above method. These program codes can be read from or written to one or more computer program products. The program code 310 can be compressed, for example, in an appropriate form.

[0162] In summary, the insulation method, device and cooking utensil provided in the embodiments of the present application arrange the first heating device, the second heating device and the third heating device at different positions in the heating cavity, obtain the working temperature in the heating cavity in real time through the temperature detection device, and determine the preset insulation temperature and the target insulation time when the cooking utensil is in the insulation mode. During the target insulation time, according to the relationship between the working temperature of the cooking utensil and the preset insulation temperature, the three heat sources included in the cooking utensil are controlled to heat with different heating parameters for insulation, thereby improving the uniformity of the temperature in the heating cavity of the cooking utensil and enhancing the insulation performance of the cooking utensil.

[0163] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for keeping warm a cooking utensil, characterized in that: The cooking appliance comprises a heating cavity, the cooking appliance further comprises a first heating device, a second heating device, a third heating device and a temperature detection device, the temperature detection device is used to detect the working temperature in the heating cavity, and the method comprises: In response to the cooking appliance being in a keep-warm mode, determining a preset keep-warm temperature and a target keep-warm time; During the target heat preservation time, the operating temperature in the heating chamber is detected by the temperature detection device; According to the target size relationship between the working temperature and the preset insulation temperature, the heating parameters of the first heating device, the second heating device and the third heating device are controlled to perform insulation.

2. The method according to claim 1, characterized in that The temperature detection device comprises a first temperature detection device and a second temperature detection device, the first temperature detection device is used to detect a first measured temperature near the first heating device, and the second temperature detection device is used to detect a second measured temperature near the third heating device; According to the target size relationship between the working temperature and the preset insulation temperature, the heating parameters of the first heating device, the second heating device and the third heating device are controlled to perform insulation, including: Obtaining a first magnitude relationship between the first measured temperature and a first preset insulation temperature, and / or obtaining a second magnitude relationship between the second measured temperature and a second preset insulation temperature; According to the first size relationship and / or the second size relationship, controlling heating parameters of the first heating device, the second heating device and the third heating device to keep warm; Wherein, the first preset insulation temperature is calculated by the preset insulation temperature and the first adjustment temperature; The second preset insulation temperature is calculated by the preset insulation temperature and the second adjustment temperature.

3. The method according to claim 2, characterized in that The method further comprises: In response to the first measured temperature being less than the first preset insulation temperature, and / or the second measured temperature being less than the second preset insulation temperature, the first heating device is controlled to generate heat at a first preset power and at a first time interval for a first preset duration, and / or the second heating device is controlled to generate heat at a second preset power, and / or the third heating device is controlled to generate heat at a third preset power and at a second time interval for a second preset duration, so as to keep warm.

4. The method according to claim 3, characterized in that After controlling the first heating device to generate heat at a first preset power and a first preset time interval, and / or the second heating device to generate heat at a second preset power, and / or the third heating device to generate heat at a third preset power for heat preservation, the method further includes: In response to the first measured temperature being not less than the first preset heat preservation temperature, and / or the second measured temperature being not less than the second preset heat preservation temperature, controlling the first heating device, the second heating device, and the third heating device to heat in a target heat preservation mode; Wherein, the first preset insulation temperature is calculated by the preset insulation temperature and the first adjustment temperature; The second preset insulation temperature is calculated by the preset insulation temperature and the second adjustment temperature.

5. The method according to claim 4, characterized in that The target heat preservation mode is that the first heating device heats at a third time interval at a fourth preset power for a third preset time, and / or the second heating device heats at a fourth time interval at a fifth preset power for a fourth preset time, and / or the third heating device heats at a fifth time interval at a sixth preset power for a fifth preset time: or The first heating device generates heat at a sixth time interval at a seventh preset power for a sixth preset time period, and / or the second heating device stops generating heat, and / or the third heating device generates heat at a seventh time interval at an eighth preset power for a seventh preset time period; or The first heating device generates heat at a ninth preset power and at an eighth time interval for an eighth preset time period, and / or the second heating device generates heat at a tenth preset power and at a ninth time interval for a ninth preset time period, and / or the third heating device stops generating heat; or The first heating device stops heating, and / or the second heating device heats at an eleventh preset power at a tenth time interval for a tenth preset duration, and / or the third heating device heats at a twelfth preset power at an eleventh time interval for an eleventh preset duration; or The first heating device generates heat at a twelfth preset time interval and at a thirteenth preset power for a twelfth preset time period, and / or the second heating device stops generating heat, and / or the third heating device stops generating heat.

6. The method according to claim 4, characterized in that After controlling the first heating device, the second heating device, and the third heating device to heat in the target heat preservation mode, the method further includes: In response to the first measured temperature being greater than a third preset insulation temperature, and / or the second measured temperature being greater than a fourth preset insulation temperature, controlling the first heating device, and / or the second heating device to stop heating, and / or the third heating device to stop heating; The third preset insulation temperature is calculated by the preset insulation temperature and the third adjustment temperature, and the fourth preset insulation temperature is calculated by the preset insulation temperature and the fourth adjustment temperature.

7. The method according to any one of claims 1 to 6, characterized in that: The step of determining a preset keeping-warm temperature and a target keeping-warm time in response to the cooking appliance being in the keeping-warm mode comprises: If it is detected that the cooking appliance has finished cooking, the cooking mode is entered, and the preset keeping warm temperature and the target keeping warm time are determined.

8. The method according to any one of claims 1 to 6, characterized in that: The step of determining a preset keeping-warm temperature and a target keeping-warm time in response to the cooking appliance being in the keeping-warm mode comprises: If a keep warm instruction is detected, the keep warm mode is entered in response to the keep warm instruction, and the keep warm temperature indicated by the keep warm instruction is obtained as the preset keep warm temperature, and the keep warm time indicated by the keep warm instruction is obtained as the target keep warm time.

9. A heat preservation device for a cooking utensil, characterized in that: The cooking appliance comprises a heating cavity, the cooking appliance further comprises a first heating device, a second heating device, a third heating device and a temperature detection device, the temperature detection device is used to detect the working temperature in the heating cavity, and the device comprises: A preset keeping temperature and target keeping time determining module, used for determining a preset keeping temperature and a target keeping time in response to the cooking appliance being in a keeping temperature mode; A working temperature detection module, used to detect the working temperature in the heating chamber through the temperature detection device within the target heat preservation time; The heat preservation control module is used to control the heating parameters of the first heating device, the second heating device and the third heating device according to the target size relationship between the working temperature and the preset heat preservation temperature to perform heat preservation.

10. A cooking utensil, characterized in that: include: one or more processors; Memory; One or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs are configured to execute the method according to any one of claims 1-8.

11. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores program codes, which can be called by a processor to execute the method according to any one of claims 1 to 8.

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