Aluminum foil box for electromagnetic coil heating and control method for electromagnetic coil heating

Abstract

The invention discloses an aluminum foil box for heating an electromagnetic coil and a control method and device for heating the electromagnetic coil, and the method comprises the steps: putting the aluminum foil box into a heating bin, so as to enable the heating bin to execute a corresponding stir-frying process; the heating bin adopts an electromagnetic coil to heat an aluminum foil box, and to-be-cooked food materials are stored in the aluminum foil box; obtaining a current value and a voltage value of heating of the electromagnetic coil in the first time period, and calculating the current value and the voltage value of heating of the electromagnetic coil according to a preset interval frequency to obtain a real-time synthetic power of heating of the electromagnetic coil; calculating the real-time synthesis power to obtain real-time average power; the real-time average power is compared with a preset safety threshold value, and whether the risk that the meal box is melted through exists or not is judged according to a comparison strategy; when it is judged that the risk that the meal box is melted through exists, the electromagnetic coil is controlled to stop heating. When the wall thickness of the aluminum foil box is small, the heating power is too large, and the food materials to be cooked are solid food materials or semi-fluid food materials, the aluminum foil box is not easy to melt through.

Description

Technical Field

[0001] The present application relates to the technical field of cooking utensils, and in particular to an aluminum foil box for electromagnetic coil heating, and a control method and device for electromagnetic coil heating. Background Art

[0002] The use of electromagnetic heating technology to heat lunch boxes can currently be divided into the following three heating methods: one is direct heating of magnetic materials, such as using iron materials to make lunch boxes, but iron lunch boxes are thick and have high costs in the vending industry; the second is to add a magnetic sheet to the bottom of the aluminum foil lunch box. If the magnetic sheet is set as an iron sheet, the cost is high, the process is complicated, and the heating speed is slow; the third is direct heating of the aluminum foil lunch box, which is low-cost and has been widely used in the vending industry.

[0003] At present, electromagnetic heating technology is used to directly heat thin aluminum foil lunch boxes. Due to the thin thickness of the aluminum foil lunch boxes, when the heating power is too large, especially when heating solid food and viscous food, there is a problem that the aluminum foil lunch boxes are easy to melt through, resulting in only liquid food being able to be heated. Summary of the invention

[0004] The purpose of the present application is to provide an aluminum foil box for electromagnetic coil heating, and a control method and device for electromagnetic coil heating.

[0005] The present application provides a control method for electromagnetic coil heating, comprising:

[0006] The aluminum foil box is placed in the heating chamber so that the heating chamber performs the corresponding frying process; wherein the heating chamber uses an electromagnetic coil to heat the aluminum foil box, and the aluminum foil box contains ingredients to be cooked;

[0007] Acquire the current value and voltage value of the electromagnetic coil heating in the first time period, and calculate the current value and voltage value of the electromagnetic coil heating according to a preset interval frequency to obtain the real-time synthetic power of the electromagnetic coil heating;

[0008] Calculate the real-time synthetic power to obtain the real-time average power;

[0009] Compare the real-time average power with the preset safety threshold, and determine whether there is a risk of the lunch box melting through based on the comparison strategy;

[0010] When it is determined that there is a risk of the lunch box melting through, the electromagnetic coil is controlled to stop heating.

[0011] Furthermore, the real-time average power is compared with a preset safety threshold, and according to the comparison strategy, whether there is a risk of melting through the lunch box is determined, including:

[0012] If the real-time average power is higher than the preset safety threshold, the heating is determined to be abnormal, and the number of abnormal heating times in the first time period is recorded and accumulated;

[0013] Determine whether the accumulated number of heating abnormalities is greater than the set threshold;

[0014] If the accumulated number of heating anomalies is greater than the set threshold, it is determined that there is a risk of the lunch box melting through.

[0015] Further, the obtaining of the current value and voltage value of the electromagnetic coil heating in the first time period, and calculating the current value and voltage value of the electromagnetic coil heating according to a preset interval frequency to obtain the real-time synthetic power of the electromagnetic coil heating, includes:

[0016] The current and voltage values ​​of the electromagnetic coil heating are calculated once every 50-300ms.

[0017] The embodiment of the present application provides an aluminum foil box for electromagnetic coil heating, comprising: a box body, which is provided with a accommodating cavity for storing food to be cooked; the box body comprises a bottom and a side wall connected to the bottom, and the angle between the side wall and the horizontal plane where the bottom is located is set to an obtuse angle; the wall thickness of the box body is set to 0.05mm-0.3mm; when the box body is heated by an electromagnetic coil, the control method for electromagnetic coil heating is based on the above-mentioned control method to achieve cooking of the food to be cooked stored in the box body.

[0018] Furthermore, the wall thickness of the box body is set to 0.08mm-0.15mm.

[0019] Furthermore, the side wall includes a first side wall and a second side wall, and two sides of the first side wall are connected to the bottom and the second side wall respectively; wherein,

[0020] The angle between the first side wall and the horizontal plane where the bottom is located is smaller than the angle between the second side wall and the horizontal plane where the bottom is located.

[0021] Further, the angle between the first side wall and the horizontal plane where the bottom is located is set to 95-105 degrees;

[0022] The angle between the second side wall and the horizontal plane where the bottom is located is set to 98-110 degrees.

[0023] Furthermore, when the electromagnetic coil is used to heat the box body, the inductance is set to 30-200 μH and the frequency is set to 10-50 kHz.

[0024] Furthermore, the food to be cooked includes solid food or semi-fluid food; wherein the semi-fluid food is a mixture of solid and liquid, and the solid and liquid can be separated from each other; or, the semi-fluid food is a mixture of solid and liquid that cannot be separated; and the proportion of liquid mass in the semi-fluid food to the total mass is less than 30%.

[0025] The present application provides a control device for electromagnetic coil heating, comprising:

[0026] A frying module, which is used to place the aluminum foil box into a heating chamber so that the heating chamber performs a corresponding frying process; wherein the heating chamber uses an electromagnetic coil to heat the aluminum foil box, and the aluminum foil box contains ingredients to be cooked;

[0027] An acquisition module, which is used to acquire the current value and voltage value of the electromagnetic coil heating in the first time period, and calculate the current value and voltage value of the electromagnetic coil heating according to a preset interval frequency to obtain the real-time synthetic power of the electromagnetic coil heating;

[0028] A calculation module, which is used to calculate the real-time synthetic power by a moving weighted average method to obtain the real-time average power;

[0029] A determination module, which is used to compare the real-time average power with a preset safety threshold and determine whether there is a risk of the lunch box melting through according to a comparison strategy;

[0030] The control module is used to control the electromagnetic coil to stop heating when it is determined that there is a risk of the lunch box melting through.

[0031] The above technical solution of the present application has the following beneficial technical effects:

[0032] 1. In the embodiment of the present application, by real-time monitoring of the heating power of the electromagnetic coil, the real-time average power is compared with the preset safety threshold, and based on the comparison strategy, it can be determined that there is a risk of the lunch box melting through. In this way, the risk of the lunch box melting through can be discovered in time. At this time, the electromagnetic coil can be controlled to stop heating, and the heating chamber can be controlled to stop working, and the frying is ended. Therefore, even if the wall thickness of the aluminum foil box is thin and the heating power is too large, especially when heating solid or semi-fluid ingredients, the aluminum foil box is not easy to melt through.

[0033] 2. In the embodiment of the present application, the side walls of the box body are arranged to be slightly inclined outward to increase the volume of the accommodating cavity, so that more food can be stored; compared with the lunch box whose side walls are perpendicular to the bottom, the aluminum foil box is less deformed by the stored food; and by setting a reasonable box body wall thickness, the aluminum foil box has better structural strength and is not easy to deform, and has low production cost. When the box body is directly heated by an electromagnetic coil, the heating effect of the food is better, which can avoid the phenomenon of the cooked food becoming mushy during the heating process, and can increase the heating speed of the box body. The box body can realize heat transfer to improve the heating speed and heating effect of the food, thereby improving the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1is a schematic structural diagram of an aluminum foil box for electromagnetic coil heating according to a first embodiment of the present application;

[0035] Figure 2 This is a schematic diagram of the effect of the box after cooking;

[0036] Figure 3 The changing trend of the deformation of the aluminum foil box is schematically shown;

[0037] Figure 4 is a schematic structural diagram of a heating chamber according to a second embodiment of the present application;

[0038] Figure 5 is a flow chart of a control method for electromagnetic coil heating according to a third embodiment of the present application;

[0039] Figure 6 is a flow chart of a control method for electromagnetic coil heating according to a fourth embodiment of the present application;

[0040] Figure 7 is a schematic structural diagram of a control device for electromagnetic coil heating according to a fifth embodiment of the present application;

[0041] Figure 8 It is a schematic diagram of an electronic device used to implement the control method of electromagnetic coil heating in an embodiment of the present application. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concepts of the present application. In this article, terms such as first, second, third, etc. are only used to distinguish one feature from another feature, and do not require or imply any order or association between these features.

[0043] The use of electromagnetic heating technology to heat lunch boxes can be divided into the following three heating methods: First, direct heating of magnetic materials, such as using iron materials to make lunch boxes, but iron lunch boxes are thick and costly in the vending industry; second, adding a magnetic sheet to the bottom of the aluminum foil lunch box, such as setting the magnetic sheet as an iron sheet, which is costly, complicated, and slow to heat; third, direct heating of the aluminum foil lunch box, which is low-cost and has been widely used in the vending industry. However, when the thickness of the aluminum foil lunch box is thin, on the one hand, the structural strength of the lunch box is poor and it is easy to deform, and on the other hand, it leads to poor heating effect of the food, and it is easy to partially become mushy; when the thickness of the lunch box is too large, on the one hand, the cost increases, and on the other hand, the heating efficiency will become lower. Due to the hysteresis of heat transfer due to the skin effect, the heating speed of the aluminum foil lunch box will slow down, affecting the heating speed and heating effect of the food.

[0044] In view of this, the present application embodiment provides an aluminum foil box for electromagnetic coil heating, such as Figure 1 As shown, it includes: a box body 11, which is provided with a containing cavity for storing food to be cooked; the box body 11 includes a bottom and a side wall connected to the bottom, and the angle between the side wall and the horizontal plane where the bottom is located is set to an obtuse angle; the wall thickness of the box body 11 is set to 0.05mm-0.3mm; the outer wall of the box body 11 can contact with the electromagnetic coil 12, and when the electromagnetic coil 12 is used to heat the box body 11, the food to be cooked contained in the box body 11 can be cooked.

[0045] Specifically, the side walls of the box body 11 are arranged to be slightly inclined outward to increase the volume of the accommodating cavity, so that more food can be stored; compared with the lunch box in which the side walls of the box body 11 are perpendicular to the bottom, the aluminum foil box in the embodiment of the present application is less deformed by the stored food; by setting a reasonable wall thickness of the box body 11, the structural strength of the aluminum foil box is better and not easy to deform, and the production cost is low. When the electromagnetic coil 12 is used to directly heat the box body 11, the heating effect of the food is better, the phenomenon of the cooked food becoming mushy during the heating process can be avoided, and the heating speed of the box body 11 can be increased. The box body 11 can realize heat transfer to improve the heating speed and heating effect of the food, thereby improving the heating efficiency.

[0046] In some embodiments, in order to improve the structural strength of the aluminum foil box and save production costs, the wall thickness of the box body 11 is preferably set to a range of 0.08 mm-0.15 mm.

[0047] In an exemplary embodiment, Figure 2 As shown, the cooking effect when the wall thickness of the box body 11 is 0.05 mm is Figure 2 It is not difficult to see that a small area of ​​the bottom of the box body 11 retains the mushy food. In addition, for example, the length, width and height of the box body 11 are specifically 160×100×60 mm. Figure 3As shown in the figure, the relationship between the deformation (mm) and the wall thickness (mm) of the aluminum foil box under 1 kg of food, the ordinate is the deformation percentage of the box body 11, that is, the percentage of the deformation of the box body 11 / the wall thickness, the abscissa is the wall thickness of the aluminum foil box, and the curve is the change trend of the deformation of the aluminum foil box. Figure 3 It can be seen from the data that when the wall thickness of the aluminum foil box is less than 0.05mm, the deformation percentage of the aluminum foil box exceeds 20%. As the wall thickness continues to increase, the deformation percentage becomes smaller and smaller. When the wall thickness is greater than 0.15mm, the deformation of the box body 11 caused by 1Kg of food squeezing the box body 11 is less affected; and the thicker the wall, the greater the cost and difficulty of processing. Therefore, the wall thickness of the box body 11 can be set between 0.05-0.3mm, and preferably the wall thickness range of the box body 11 can be set between 0.08-0.15mm. At this time, the strength and economy of the aluminum foil box are better; and when the electromagnetic coil 12 is used to directly heat the box body 11, the heating effect of the food is better, and it is not easy to become mushy when cooking the food during the heating process.

[0048] In some embodiments, the side wall includes a first side wall and a second side wall, and the two sides of the first side wall are respectively connected to the bottom and the second side wall; wherein the angle between the first side wall and the horizontal plane where the bottom is located is smaller than the angle between the second side wall and the horizontal plane where the bottom is located.

[0049] Specifically, the first side wall and the second side wall of the box body 11 are arranged to be gradually inclined slightly outward from bottom to top. Such an arrangement is consistent with the force of food squeezing the box body 11 outward, which not only increases the volume of the accommodating cavity, but also reduces the squeezing and deformation of the box body 11 by the stored food, thereby improving the structural strength of the box body 11.

[0050] In an exemplary embodiment, the angle between the first side wall and the horizontal plane where the bottom is located is set to 95-105 degrees; the angle between the second side wall and the horizontal plane where the bottom is located is set to 98-110 degrees.

[0051] Specifically, the connection between the first side wall and the second side wall of the box body 11 can be set to a protruding arc, and the protruding surface of the arc can be set to face the accommodating cavity. For example, the angle between the first side wall and the horizontal plane where the bottom is located is set to 95 degrees, and the angle between the second side wall and the horizontal plane where the bottom is located is set to 100 degrees. Such an inclination angle can not only increase the volume of the accommodating cavity, but also reduce the squeezing and deformation of the box body 11 by the stored food, thereby improving the structural strength of the box body 11.

[0052] In some embodiments, the box body 11 of the aluminum foil box may include a box cover and a bottom box, the box cover is provided with a protruding first edge, the bottom box is provided with a protruding second edge, the first edge is buckled on the second edge to seal the box cover and the bottom box; the cross-sections of the box cover and the bottom box can be set to be trapezoidal by cutting along the length direction or the width direction.

[0053] At present, in the related technology, thin aluminum foil lunch boxes are directly heated by electromagnetic heating. Due to the thin thickness of the aluminum foil lunch box, when the heating power is too large, especially when heating solid food and viscous food, there is a problem that the aluminum foil lunch box is easy to melt through, resulting in only liquid food being able to be heated.

[0054] In view of this, the embodiment of the present application provides a control method for electromagnetic coil heating, based on the above-mentioned aluminum foil box for electromagnetic coil heating, such as Figure 5 As shown, the following specific steps may be included:

[0055] S110: placing the aluminum foil box into a heating chamber so that the heating chamber performs a corresponding frying process; wherein the heating chamber uses an electromagnetic coil to heat the aluminum foil box, and the aluminum foil box contains ingredients to be cooked;

[0056] S120: obtaining the current value and voltage value of the electromagnetic coil heating in the first time period, and calculating the current value and voltage value of the electromagnetic coil heating according to a preset interval frequency to obtain the real-time synthetic power of the electromagnetic coil heating;

[0057] S130: Calculate the real-time composite power to obtain the real-time average power;

[0058] S140: Compare the real-time average power with the preset safety threshold, and determine whether there is a risk of melting through the lunch box according to the comparison strategy;

[0059] S150: When it is determined that there is a risk of the lunch box melting through, the electromagnetic coil is controlled to stop heating.

[0060] Specifically, since the aluminum foil box is located inside the warehouse body of the heating bin and the aluminum foil box is disposable, it is not convenient to arrange a temperature sensor to directly monitor the temperature of the aluminum foil box. By real-time monitoring the heating power of the electromagnetic coil, the real-time average power is compared with the preset safety threshold, and according to the comparison strategy, for example, when the real-time average power is higher than the preset safety threshold, the preset safety threshold can be set to a certain range of values ​​higher than the rated power, and it can be determined that there is a risk of melting through the lunch box. In this way, the risk of melting through the lunch box can be discovered in time. At this time, the electromagnetic coil can be controlled to stop heating, and further, the heating bin can be controlled to stop working and the frying can be ended. Therefore, even if the wall thickness of the aluminum foil box is thin, for example, the wall thickness is 0.05-0.3mm, when the heating power is too large, especially when heating solid or semi-fluid ingredients, the aluminum foil box is not easy to melt through.

[0061] In some embodiments, the real-time composite power may be calculated by using a moving weighted average method to obtain the real-time average power.

[0062] In some embodiments, step S140: comparing the real-time average power with a preset safety threshold and judging whether there is a risk of melting through the lunch box according to a comparison strategy may include the following specific steps:

[0063] S141: If the real-time average power is higher than the preset safety threshold, the heating is determined to be abnormal, and the number of abnormal heating times in the first time period is recorded and accumulated;

[0064] S142: Determine whether the accumulated number of heating abnormalities is greater than a set threshold;

[0065] S143: If the accumulated number of abnormal heating times is greater than the set threshold, it is determined that there is a risk of the lunch box melting through.

[0066] Specifically, if the real-time average power is higher than the preset safety threshold, for example, the preset safety threshold is 1.2 times the rated power, the heating is judged to be abnormal, and the number of heating abnormalities within 10 seconds is recorded and accumulated; it is determined whether the accumulated number of heating abnormalities is greater than the set threshold; if the accumulated number of heating abnormalities is greater than the set threshold, for example, the accumulated number of heating abnormalities within 10 seconds exceeds 8 times, it is determined that there is a risk of the lunch box melting through.

[0067] In some embodiments, step S120: obtaining the current value and voltage value of the electromagnetic coil heating in the first time period, and calculating the current value and voltage value of the electromagnetic coil heating according to a preset interval frequency to obtain the real-time synthetic power of the electromagnetic coil heating, includes:

[0068] The current and voltage values ​​of the electromagnetic coil heating are calculated once every 50-300ms.

[0069] In an embodiment of the present application, the vending machine may include a refrigerator and a frying cabinet. The refrigerator may store aluminum foil boxes to be cooked, and the aluminum foil boxes to be cooked may store fresh pre-processed ingredients. A plurality of heating chambers may be provided in the frying cabinet, and the pre-processed ingredients may be fried on-site using the heating chambers or other cooking methods may be used to enhance the taste and freshness of the food.

[0070] According to the frying process, the corresponding heating chamber 20 is selected, and the aluminum foil box to be cooked is sent to the corresponding heating chamber 20. The heating method of the heating chamber can be electromagnetic coil heating. Figure 4As shown, the heating chamber 20 includes a chamber body 202 and a chamber door 201. The heating chamber is arranged in the chamber body. The heating chamber is used to accommodate the aluminum foil box 10 to be cooked. The chamber door 201 is arranged to be able to move up and down. When the chamber door 201 descends to the first position, the chamber door 201 seals the heating chamber. When the chamber door 201 rises to the second position, the aluminum foil box to be cooked can enter the heating chamber for heating or the cooked aluminum foil box can be removed. The heating chamber 20 can be provided with a driving mechanism to realize a rotation function to drive the aluminum foil box 10 to be cooked to flip and stir the ingredients in the aluminum foil box 10 to be cooked. The main controller can set different parameters such as heating time, temperature, power, and stir-frying speed according to the type of ingredients to be cooked, so that the ingredients are stir-fried evenly at high temperature, fully carry out the Maillard reaction, and improve the taste. Among them, the electromagnetic coil and the driving mechanism are all connected to the main controller to realize that the electromagnetic coil can be controlled to stop heating when the frying is finished, and the heating chamber can be controlled to stop working. The processor may be connected to the main controller and configured to send instructions to the main controller to start a driving mechanism (eg, a motor) and / or start electromagnetic coil heating, etc., which are not listed here one by one.

[0071] In the embodiment of the present application, by obtaining the current value and voltage value of the electromagnetic coil heating, the heating power of the electromagnetic coil is monitored in real time. For example, the real-time synthetic power can be calculated once for the current value and voltage value of the electromagnetic coil heating every 100ms, and the real-time synthetic power is calculated by moving weighted average to obtain the real-time average power; the real-time average power is compared with the preset safety threshold, and according to the comparison strategy, for example, if the real-time average power is higher than the preset safety threshold, the heating is determined to be abnormal, and the number of heating anomalies within 10 seconds is recorded and accumulated; it is determined whether the accumulated number of heating anomalies is greater than the set threshold; if the accumulated number of heating anomalies is greater than the set threshold, for example, the accumulated number of heating anomalies within 10 seconds exceeds 8 times, it is determined that there is a risk of the lunch box melting through. At this time, the electromagnetic coil can be controlled to stop heating, and further, the heating chamber can be controlled to stop working, and the frying is finished, indicating that the voltage fluctuation of the power grid is large, which has a great impact on the frying, and the lunch box is at risk of melting through. This not only prevents the risk of contaminating the heating chamber due to the aluminum foil box melting through, but also avoids the overall equipment failure and damage to the vending machine. Moreover, under this technical solution, the aluminum foil box with a thinner wall thickness can be suitable for cooking solid or semi-fluid ingredients.

[0072] In some embodiments, the food to be cooked may include solid food or semi-fluid food; wherein the semi-fluid food is a mixture of solid and liquid, and the solid and liquid can be separated from each other; or, the semi-fluid food is a mixture of solid and liquid that cannot be separated; and the proportion of liquid mass in the semi-fluid food to the total mass is less than 30%.

[0073] Specifically, semi-fluid food refers to a type of food between solid food and liquid food. In the embodiment of the present application, when the electromagnetic coil is used to directly heat the box body, the semi-fluid food that can be cooked is as follows: a. Semi-fluid food is a mixture of solid and liquid, and the solid and liquid can be separated from each other, and the proportion of its liquid mass to the total mass is less than 30%, such as pasta, porridge, etc.; b. Semi-fluid food is a viscous food in which the solid and liquid cannot be separated, such as sesame paste, mashed potatoes, etc. When an electromagnetic coil is used to heat an aluminum foil box with a thin wall thickness, and the food is liquid (or food with a relatively large proportion of liquid, such as spicy hot pot, noodle soup, etc.), it is not easy to melt through. The reason is that the liquid has a large contact area with the box body and the contact is good. The liquid has a large heat capacity and a fast heat conduction, and can quickly transfer the heat on the box body to the food, avoiding excessive heat or heat concentration in the box body, and the risk of melting through is small; when heating solid or semi-fluid food with a small proportion of liquid, the heat transfer speed is slow, resulting in heat concentration, and the food is easy to become partially mushy. The thinner the lunch box, the lower the strength, the smaller the heat capacity, and the easier it is to melt through. Based on this, in the embodiment of the present application, by real-time monitoring of the heating power of the electromagnetic coil, comparing the real-time average power with the preset safety threshold, and according to the comparison strategy, it can be determined that there is a risk of melting through the lunch box. In this way, the risk of melting through the lunch box can be discovered in time. At this time, the electromagnetic coil can be controlled to stop heating, and the heating chamber can be controlled to stop working, and the frying is ended. Therefore, even if the wall thickness of the aluminum foil box is thin, when the heating power is too large, especially when heating solid food or semi-fluid food, the aluminum foil box is not easy to melt through. It can be understood that the aluminum foil box in the embodiment of the present application can also be used for cooking staple foods such as rice, and the cooked rice is not prone to becoming mushy.

[0074] In some embodiments, when the electromagnetic coil is used to heat the box body, the inductance is set to 30-200 μH and the frequency is set to 10-50 kHz. By properly setting the electromagnetic coil heating parameters, when cooking solid food or semi-fluid food, the aluminum foil box with a thinner wall thickness can be heated more evenly by setting reasonable electromagnetic heating parameters, such as setting the inductance to 30-200 μH and the frequency to 10-50 kHz.

[0075] The implementation methods and advantages of the embodiments of the present application are described above through multiple embodiments. The specific processing process of the embodiments of the present application is described in detail below with reference to specific examples.

[0076] Another electromagnetic coil heating control method provided in an embodiment of the present application is based on the above-mentioned aluminum foil box for electromagnetic coil heating, such as Figure 6 As shown, the following specific steps may be included:

[0077] S210: frying is performed;

[0078] The aluminum foil box can be placed in a heating chamber, and the heating chamber performs a corresponding frying process according to a menu selection; wherein the heating chamber uses an electromagnetic coil to heat the aluminum foil box, and the aluminum foil box stores ingredients to be cooked.

[0079] S220: Read the current and voltage and calculate the combined power;

[0080] The current value and voltage value of the electromagnetic coil heating are read in real time, and the current value and voltage value of the electromagnetic coil heating are calculated according to a preset interval frequency to obtain the real-time synthetic power of the electromagnetic coil heating.

[0081] S230: Perform moving weighted averaging on the real-time synthetic power;

[0082] For example, every 300ms, the current and voltage of the electromagnetic coil are reported once through the monitoring circuit board, and the real-time synthetic power P1 can be obtained based on the current and voltage values; after 3s, the system can collect P1--P10, a total of 10 real-time synthetic power data, at this time, the 10 real-time synthetic power data will be weighted averaged to obtain the real-time average power Pa=(P1+P2+···+P10) / 10; after 3.3s, the system can collect P2--P11, a total of 10 real-time synthetic power data, at this time, the 10 real-time synthetic power data will be weighted averaged to obtain the dynamic real-time average power Pa=(P2+P3+···+P11) / 10, that is, the real-time average power can be calculated according to the preset interval frequency, the number of real-time synthetic power data used is fixed, and after collecting and adding new data, the previously collected data will not be used to avoid excessive use of data, resulting in abnormal power fluctuations being averaged and not conducive to monitoring.

[0083] S240: Compare the current real-time average power with the target value to determine whether the current real-time average power exceeds a safe range;

[0084] The target value is, for example, the set rated power, and the safety range is, for example, 1.2 times the rated power. It is determined whether the current real-time average power exceeds the safety range; if it exceeds the safety range, execute the next step; if it does not exceed the safety range, execute step S270.

[0085] S250: If it exceeds the safety range, it is determined to be heating abnormality, and the number of abnormalities is recorded and accumulated;

[0086] S260: Determine whether the accumulated number of abnormalities is greater than a set value;

[0087] Among them, if the accumulated number of abnormal times is greater than the set value, the abnormality is reported and the frying ends; if the accumulated number of abnormal times is not greater than the set value, the next step is executed.

[0088] S270: Perform power closed-loop control; wherein, it is possible to continue monitoring whether the real-time average power exceeds the set threshold. When it exceeds 1.1 times the set threshold, the current input power can be corrected to control the input power within the set threshold range, so as to uniformly heat the aluminum foil box with a relatively thin wall thickness.

[0089] For example, compare the real-time average power Pa with the current input power P. If Pa < P, the power difference ΔP = P - Pa. Add the power difference ΔP to the current input power P, then the adjusted power P' = P + ΔP; conversely, when Pa > P, then the adjusted power P' = P - ΔP. Perform a moving weighted average on the real-time combined power data to achieve dynamic adjustment of the input power.

[0090] S280: Continue to perform the frying process; according to the set parameters such as heating time, temperature, power, and frying speed, make the ingredients in the aluminum foil box evenly heated to improve the taste of the cooked food.

[0091] S290: The frying ends; that is, control the electromagnetic coil to stop heating and control the heating chamber to stop working.

[0092] Corresponding to the method embodiment of the present application, the embodiment of the present application also provides a control device for electromagnetic coil heating, based on the aluminum foil box for electromagnetic coil heating, as Figure 7 shown. Specifically, it may include:

[0093] A frying module 510, which is used to put the aluminum foil box into the heating chamber so that the heating chamber performs the corresponding frying process; wherein, the heating chamber uses an electromagnetic coil to heat the aluminum foil box, and the aluminum foil box contains ingredients to be cooked;

[0094] An acquisition module 520, which is used to acquire the current value and voltage value of the electromagnetic coil heating in the first time period, and calculate the current value and voltage value of the electromagnetic coil heating at a preset interval frequency to obtain the real-time combined power of the electromagnetic coil heating;

[0095] A calculation module 530, which is used to calculate the real-time combined power by means of moving weighted average to obtain the real-time average power;

[0096] A determination module 540, which is used to compare the real-time average power with a preset safety threshold and judge whether there is a risk of the lunch box melting through according to the comparison strategy;

[0097] A control module 550, which is used to control the electromagnetic coil to stop heating when it is determined that there is a risk of the lunch box melting through.

[0098] The electronic device in the embodiment of the present application may be a user terminal device, a server, other computing devices, or a cloud server. Figure 8 A schematic diagram of the hardware structure of an electronic device according to an embodiment of the present application is shown. The electronic device may include a processor 601 and a memory 602 storing computer program instructions. When the processor 601 executes the computer program instructions, the process or function of any of the above-mentioned embodiments of the method is implemented.

[0099] Specifically, the processor 601 may include a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application. The memory 602 may include a large-capacity memory for data or instructions. For example, the memory 602 may be at least one of the following: a hard disk drive (HDD), a read-only memory (ROM), a random access memory (RAM), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a tape, a universal serial bus (USB) drive or other physical / tangible memory storage device. For another example, the memory 602 may include a removable or non-removable (or fixed) medium. For another example, the memory 602 may be inside or outside the integrated gateway disaster recovery device. The memory 602 may be a non-volatile solid-state memory. In other words, the memory 602 usually includes a tangible (non-transitory) computer-readable storage medium (such as a memory device) encoded with computer-executable instructions, and when the software is executed (such as executed by one or more processors), the operations described in the method of the embodiment of the present application can be performed. The processor 601 implements the process or function of any method in the above embodiments by reading and executing the computer program instructions stored in the memory 602.

[0100] In one example, Figure 8The electronic device shown may also include a communication interface 603 and a bus 610. Among them, the processor 601, the memory 602, and the communication interface 603 are connected through the bus 610 and complete the communication between each other. The communication interface 603 is mainly used to realize the communication between each module, device, unit and / or device in the embodiment of the present application. The bus 610 includes hardware, software or both, and can couple the components of the online data traffic billing device to each other. For example, the bus may include at least one of the following: an accelerated graphics port (AGP) or other graphics bus, an enhanced industrial standard architecture (EISA) bus, a front-end bus (FSB), a hypertransport (HT) interconnect, an industrial standard architecture (ISA) bus, an infinite bandwidth interconnect, a low pin count (LPC) bus, a memory bus, a micro channel architecture (MCA) bus, a peripheral component interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a serial advanced technology attachment (SATA) bus, a video electronics standard association local (VLB) bus or other suitable buses. The bus 610 may include one or more buses. Although the embodiments of the present application describe or illustrate a specific bus, the embodiments of the present application may consider any suitable bus or interconnection method.

[0101] In combination with the method in the above embodiments, an embodiment of the present application also provides a computer-readable storage medium, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the process or function of any method in the above embodiments is implemented.

[0102] In addition, an embodiment of the present application further provides a computer program product, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the process or function of any one of the methods in the above embodiments is implemented.

[0103] The above exemplarily describes the flowcharts and / or block diagrams of the methods, devices, systems and computer program products of the embodiments of the present application, and describes the relevant various aspects. It should be understood that each box or combination thereof in the flowchart and / or block diagram can be implemented by computer program instructions, or by dedicated hardware that performs a specified function or action, or by a combination of dedicated hardware and computer instructions. For example, these computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to form a machine that enables these instructions executed by such a processor to enable the implementation of the functions / actions specified in each box or combination thereof in the flowchart and / or block diagram. Such a processor can be a general-purpose processor, a special-purpose processor, a special application processor or a field programmable logic circuit.

[0104] The functional blocks shown in the structured block diagram of the embodiment of the present application can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application-specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc.; when implemented in software, it is a program or code segment used to perform the required task. The program or code segment can be stored in a memory, or transmitted on a transmission medium or a communication link via a data signal carried in a carrier. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0105] It should be noted that the present application is not limited to the specific configurations and processes described above or shown in the figures. The above is only a specific implementation mode of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the described system, device, module or unit can refer to the corresponding process in the method embodiment without further description. It should be understood that the scope of protection of the present application is not limited to this. Any technician familiar with the technical field can think of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and these modifications or substitutions should be included in the scope of protection of the present application.

Claims

1. A control method for electromagnetic coil heating, characterized in that: include: The aluminum foil box is placed in the heating chamber so that the heating chamber performs the corresponding frying process; wherein the heating chamber uses an electromagnetic coil to heat the aluminum foil box, and the aluminum foil box contains ingredients to be cooked; Acquire the current value and voltage value of the electromagnetic coil heating in the first time period, and calculate the current value and voltage value of the electromagnetic coil heating according to a preset interval frequency to obtain the real-time synthetic power of the electromagnetic coil heating; Calculate the real-time synthetic power to obtain the real-time average power; Compare the real-time average power with the preset safety threshold, and determine whether there is a risk of the lunch box melting through based on the comparison strategy; When it is determined that there is a risk of the lunch box melting through, the electromagnetic coil is controlled to stop heating.

2. The control method according to claim 1, characterized in that: The real-time average power is compared with the preset safety threshold, and according to the comparison strategy, whether there is a risk of melting through the lunch box is determined, including: If the real-time average power is higher than the preset safety threshold, the heating is determined to be abnormal, and the number of abnormal heating times in the first time period is recorded and accumulated; Determine whether the accumulated number of heating abnormalities is greater than the set threshold; If the accumulated number of heating anomalies is greater than the set threshold, it is determined that there is a risk of the lunch box melting through.

3. The control method according to claim 1, characterized in that: The step of obtaining the current value and voltage value of the electromagnetic coil heating in the first time period, and calculating the current value and voltage value of the electromagnetic coil heating according to a preset interval frequency to obtain the real-time synthetic power of the electromagnetic coil heating includes: The current and voltage values ​​of the electromagnetic coil heating are calculated once every 50-300ms.

4. An aluminum foil box for electromagnetic coil heating, characterized in that: include: A box body, which is provided with a receiving cavity for storing ingredients to be cooked; The box body comprises a bottom and a side wall connected to the bottom, and the angle between the side wall and the horizontal plane where the bottom is located is set to an obtuse angle; The wall thickness of the box body is set to 0.05mm-0.3mm; When the box body is heated by an electromagnetic coil, the cooking of the food to be cooked stored in the box body is achieved based on the electromagnetic coil heating control method as described in any one of claims 1 to 3.

5. The aluminum foil box according to claim 1, characterized in that: The wall thickness of the box body is set to 0.08mm-0.15mm.

6. The aluminum foil box according to claim 1, characterized in that: The side wall comprises a first side wall and a second side wall, and two sides of the first side wall are connected to the bottom and the second side wall respectively; wherein, The angle between the first side wall and the horizontal plane where the bottom is located is smaller than the angle between the second side wall and the horizontal plane where the bottom is located.

7. The aluminum foil box according to claim 6, characterized in that: The angle between the first side wall and the horizontal plane where the bottom is located is set to 95-105 degrees; The angle between the second side wall and the horizontal plane where the bottom is located is set to 98-110 degrees.

8. The aluminum foil box according to claim 1, characterized in that: When the electromagnetic coil is used to heat the box body, the inductance is set to 30-200 μH and the frequency is set to 10-50 kHz.

9. The aluminum foil box according to claim 1, characterized in that: The food to be cooked includes solid food or semi-fluid food; wherein, The semifluid food material is a mixture of solid and liquid, and the solid and liquid can be separated from each other; or, the semifluid food material is a mixture of solid and liquid that cannot be separated; and the proportion of the liquid mass to the total mass of the semifluid food material is less than 30%.

10. A control device for electromagnetic coil heating, characterized in that: include: A frying module, which is used to place the aluminum foil box into a heating chamber so that the heating chamber performs a corresponding frying process; wherein the heating chamber uses an electromagnetic coil to heat the aluminum foil box, and the aluminum foil box contains ingredients to be cooked; An acquisition module, which is used to acquire the current value and voltage value of the electromagnetic coil heating in the first time period, and calculate the current value and voltage value of the electromagnetic coil heating according to a preset interval frequency to obtain the real-time synthetic power of the electromagnetic coil heating; A calculation module, which is used to calculate the real-time synthetic power to obtain the real-time average power; A determination module, which is used to compare the real-time average power with a preset safety threshold and determine whether there is a risk of the lunch box melting through according to a comparison strategy; The control module is used to control the electromagnetic coil to stop heating when it is determined that there is a risk of the lunch box melting through.

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