Kitchen range firepower uniformity evaluation method

Abstract

The invention discloses a stove firepower uniformity evaluation method. The method comprises the following steps: frying a cake to a state for evaluation under the same firepower; the cake is divided into a plurality of fan-shaped sample areas in the circumferential direction of the cake by taking the center of the cake as a circle center, and the plurality of sample areas comprise a standard sample area and a plurality of test sample areas; respectively acquiring a color value of the standard sample area and color values of the plurality of test sample areas through a spectrophotometer; judging whether a color difference value between the color value of the standard sample area and the color value of any test sample area is within a preset range or not; if yes, it is judged that the stove firepower is uniform; and if not, judging that the fire power of the stove is not uniform. The color value of the sample area is obtained through the spectrophotometer, and compared with naked eye observation, the color value data precision of the sample area is higher, so that the color difference value data between the standard sample area and the test sample area is more accurate, and the accuracy of stove fire uniformity judgment is improved.

Description

Technical Field

[0001] The present invention relates to the field of cookers, and particularly to a method for evaluating the evenness of the cooking firepower of a cooker. Background Art

[0002] Currently, in the industry, the evaluation of the cooking evenness of cookers mainly relies on the pancake method, the water-boiling method, and the temperature testing method. Specifically, in the pancake method, the degree of cooking evenness is determined by observing the areas on the surface of the pancake that are scorched and blackened and their distribution. However, this method relies on subjective visual judgment by the naked eye. The water-boiling method analyzes the evenness based on the generation position and size of the bubbles when the water boils, and also requires visual observation by the naked eye. The temperature testing method measures the temperatures at different points on the bottom of the pot and calculates the extreme value and standard deviation of the temperature inside the pot to evaluate the cooking evenness. However, these methods have obvious limitations.

[0003] Whether it is the pancake method or the water-boiling method, they highly rely on subjective visual judgment by people and lack objective data support, resulting in the evaluation results being difficult to quantify, and it is difficult to guarantee the accuracy and consistency.

[0004] Although the temperature testing method can provide quantitative data, it has certain limitations in practical applications. Generally, a lower temperature field inside the pot is judged to have better evenness. However, in actual cooking scenarios, consumers more expect the cooker to achieve an even cooking effect in a shorter time. Therefore, even if the temperature field evenness under a certain firepower mode performs excellently, if the cooking time is too long, it is difficult to meet the actual needs of consumers. This means that when evaluating the performance of a cooker, the existing temperature testing method may misjudge those firepower modes with an even temperature field but a slow cooking speed as excellent, while these modes actually do not well meet the usage expectations of consumers. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect that the accuracy is low due to the pancake method in the prior art using visual observation to evaluate the evenness of the cooking firepower of a cooker, and to provide a method for evaluating the evenness of the cooking firepower of a cooker.

[0006] The present invention solves the above technical problem through the following technical solutions:

[0007] A method for evaluating the evenness of the cooking firepower of a cooker, the method for evaluating the evenness of the cooking firepower of a cooker includes the following steps:

[0008] Fry the pancake to a state where it can be evaluated under the same firepower;

[0009] Taking the center of the pancake as the center of the circle, divide the pancake into a plurality of fan-shaped sample areas along the circumferential direction of the pancake, and the plurality of sample areas include a standard sample area and several test sample areas;

[0010] The color values of the standard sample area and the color values of several test sample areas are respectively obtained by a spectrocolorimeter.

[0011] It is judged whether the color difference between the color value of the standard sample area and the color value of any test sample area is within a preset range; if so, it is judged that the cooking fire of the stove is uniform; if not, it is judged that the cooking fire of the stove is uneven.

[0012] In this solution, a spectrocolorimeter is used to obtain the color values of the sample area. Compared with visual observation, the data accuracy of the color values of the sample area is higher, making the color difference data between the standard sample area and the test sample area more accurate, and improving the accuracy of judging the uniformity of the cooking fire of the stove. Moreover, the time spent on baking cakes is less, meeting the user's requirement of achieving uniform cooking in a shorter time, and the judgment result is more in line with the user's daily usage habits.

[0013] Preferably, in the step of respectively obtaining the color values of the standard sample area and the color values of several test sample areas by a spectrocolorimeter, the step of obtaining the color value of a single sample area specifically includes:

[0014] Select multiple measurement points along the radial direction of the cake.

[0015] The spectrocolorimeter is used to pick up colors at each measurement point to obtain the color values L, a, b of each measurement point; where L is the lightness of the color, a is the position of the color on the red-green axis, and b is the position of the color on the yellow-blue axis.

[0016] Calculate the average value of the color values L, a, b of multiple measurement points in a single sample area respectively.

[0017] In this solution, multiple measurement points are selected in each sample area, and the average value of the color values of multiple measurement points is used as the color value of the sample area for comparison, preventing measurement errors caused by the color of a single measurement point being too strong or too light, and improving the accuracy of judging the uniformity of the cooking fire of the stove.

[0018] Preferably, in the step of selecting multiple measurement points along the radial direction of the cake, the two end points of the sample area in the radial direction of the cake are each a measurement point, and at least one measurement point is included between the two end points of the sample area in the radial direction of the cake.

[0019] In this solution, generally, the color difference between the two end points of the sample area in the radial direction of the cake is the largest. Therefore, the two end points of the sample area in the radial direction of the cake and the points between them are selected as measurement points, making the calculated average value more accurate and improving the accuracy of judging the uniformity of the cooking fire of the stove.

[0020] Preferably, two adjacent measurement points in the radial direction of a single sample area form a measurement segment.

[0021] The judging method for the evenness of the cooking utensil's firepower satisfies one or more of the following conditions:

[0022] c1. In the step of selecting multiple measurement points along the radius of the cake, the lengths of the measurement segments in a single sample area are the same;

[0023] d1. In the step of selecting multiple measurement points along the radius of the cake, the lengths of the measurement segments in different sample areas correspond to be the same.

[0024] In this solution, the lengths of the measurement segments in different sample areas corresponding to be the same enables the selection of measurement points in different sample areas under the same conditions, reduces measurement errors, and improves the accuracy of judging the evenness of the cooking utensil's firepower.

[0025] Preferably, the specific steps of judging whether the color difference between the color value of the standard sample area and the color value of any test sample area is within the preset range; if so, it is judged that the cooking utensil's firepower is even; if not, it is judged that the cooking utensil's firepower is uneven, specifically include:

[0026] Calculate the respective average values L0, a0, and b0 of the color values L, a, and b of each measurement point in the standard sample area;

[0027] Calculate the respective average values L1, a1, and b1 of the color values L, a, and b of each measurement point in a single test sample area;

[0028] Calculate the comprehensive color difference between the standard sample area and each test sample area , = ; where, = , = , = ;

[0029] Judge whether the comprehensive color difference between the standard sample area and each test sample area is within the preset range; if so, it is judged that the cooking utensil's firepower is even; if not, it is judged that the cooking utensil's firepower is uneven.

[0030] Preferably, in the step of judging whether the comprehensive color difference between the standard sample area and each test sample area is within the preset range, the preset range is greater than or equal to 0 and less than 6.

[0031] Preferably, in the step of judging whether the comprehensive color difference between the standard sample area and each test sample area is within the preset range:

[0032] If the comprehensive color difference If it is greater than or equal to 0 and less than 2, it is determined that the burner fire uniformity is excellent;

[0033] If the comprehensive color difference value is greater than or equal to 2 and less than 4, it is determined that the burner fire uniformity is good;

[0034] If the comprehensive color difference value is greater than or equal to 4 and less than 6, it is determined that the burner fire uniformity is average.

[0035] In this solution, when it is determined that the burner fire is uniform, the uniformity of the burner fire is further refined.

[0036] Preferably, in the step of determining whether the color difference between the color value of the standard sample area and the color value of any test sample area is within the preset range, before the step of calculating the comprehensive color difference between the standard sample area and each test sample area there is also a step:

[0037] Calculate the red-green color difference between the standard sample area and each test sample area ;

[0038] Determine whether there is a negative number in the red-green color difference between the standard sample area and each test sample area ; if so, directly determine that the burner fire is uneven and there is no need to execute the step of calculating the comprehensive color difference between the standard sample area and each test sample area ; if not, initially determine that the burner fire is uniform and continue to execute the step of calculating the comprehensive color difference between the standard sample area and each test sample area .

[0039] In this solution, since the cake will turn brown during the frying process and the proportion of red has a greater impact on the depth of brown, the red-green color difference between the standard sample area and each test sample area can be compared first , thus simplifying the judgment steps.

[0040] Preferably, the burner fire uniformity evaluation method satisfies one or more of the following conditions:

[0041] c2. In the step of dividing the cake into multiple fan-shaped sample areas with the center of the cake as the center and along the circumferential direction of the cake, the number of test sample areas is multiple;

[0042] d2. In the step of dividing the cake into multiple fan-shaped sample areas with the center of the cake as the center and along the circumferential direction of the cake, the areas of the standard sample area and each test sample area are the same.

[0043] In this solution, the above settings can improve the accuracy of the burner fire uniformity evaluation.

[0044] Preferably, in the step of frying the pancake to a state where it can be judged under the same heat, the judging method for the uniformity of the stove firepower satisfies one or more of the following conditions:

[0045] c3. Obtain the color value of the standard sample area and the color values of several test sample areas within 5 minutes after the pancake is fried to a state where it can be judged;

[0046] d3. The pancake is a hand-held pancake;

[0047] e3. Only cook one side of the pancake.

[0048] In this solution, by restricting the time for obtaining the color value of the sample area, it is possible to prevent the pancake from discoloring due to too long time, and improve the accuracy of the color value of the obtained sample area. The hand-held pancake is easier to operate for dishes with uniform fire, without the intervention of the operator, there is no error in the experiment, and it is easier to visually observe the uniformity of the coloring of the pancake and whether it is cooked. The single-sided frying process can prevent the influence on the judged side after cooking the other side, and improve the accuracy of judging the uniformity of the stove firepower.

[0049] The positive and progressive effects of the present invention are as follows: By using a spectro-color difference meter to obtain the color value of the sample area, compared with visual observation, the data accuracy of the color value of the sample area is higher, making the color difference data between the standard sample area and the test sample area more accurate, and improving the accuracy of judging the uniformity of the stove firepower. Moreover, the time spent on baking the pancake is less, meeting the user's requirement of achieving uniform cooking in a shorter time, and the judging result is more in line with the user's daily usage habits. Description of the Drawings

[0050] Figure 1 It is a schematic flow chart of the judging method for the uniformity of the stove firepower according to an embodiment of the present invention.

[0051] Figure 2 It is a schematic distribution diagram of the sample area of the pancake according to an embodiment of the present invention.

[0052] Description of the Reference Numerals:

[0053] Standard sample area 1

[0054] Test sample area 2

[0055] Measurement point 3 Detailed Embodiment

[0056] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the described embodiments.

[0057] As Figure 1As shown, this embodiment discloses a method for evaluating the cooking fire uniformity of a cooker, including the steps of frying a pancake to a state where it can be evaluated under the same cooking fire.

[0058] Specifically, this embodiment evaluates the cooking uniformity of a single cooking fire. Therefore, it is necessary to cook a pancake to a state where it can be evaluated under the same cooking fire.

[0059] Taking a hand pie as an example, the following briefly describes the cooking process of the pancake:

[0060] Put 10 grams of corn oil into the pot. Take out 1 hand pie from the refrigerator and place it at the center of the pot. Then put a pressing tool on it and press hard to make the pancake stick to the bottom of the pot. During cooking, the pancake does not leave the bottom of the pot. Set the cooking fire, and the specific fire size is set according to the experimental needs. Fry the pancake on one side until this side is cooked and there is no obvious whitening (generally not exceeding 1 minute and 30 seconds). The one-sided frying process can prevent the influence on the evaluated side after cooking the other side, and improve the accuracy of evaluating the cooking fire uniformity of the cooker.

[0061] Furthermore, the cookware is preferably a non-stick pan. The whole cooking process does not cover the pot lid, and no actions such as flipping or artificially rotating the pot during the operation are allowed to affect the experimental results.

[0062] In other alternative embodiments, the type of the pancake can be designed to be other, and the specific type and amount of oil consumed during cooking and the one-sided cooking time can be modified according to the selected type of pancake. This embodiment selects the hand pie as the evaluation object because the hand pie is easier to operate for dishes with uniform fire, is not affected by the operator, has no experimental error, and it is relatively easy to visually observe the color uniformity of the pancake and whether it is cooked.

[0063] After the pancake is cooked, the color change of the cooked side of the pancake can be observed with the naked eye first. If the color difference is obvious, it can be directly judged that the cooking fire of the cooker is uneven, and no subsequent evaluation test is required. If the color change difference of the cooked side of the pancake observed with the naked eye is not obvious, subsequent evaluation tests can be carried out.

[0064] As Figure 1 shown, the method for evaluating the cooking fire uniformity of the cooker further includes the steps of dividing the pancake into a plurality of fan-shaped sample areas along the circumferential direction of the pancake with the center of the pancake as the center of the circle. The plurality of sample areas include a standard sample area 1 and several test sample areas 2;

[0065] Specifically, as Figure 2 shown, this embodiment divides the pancake into four equal parts in a cross-cross manner, including a standard sample area 1 and three test sample areas 2, and each sample area is in a different quadrant.

[0066] In other alternative embodiments, the number of test sample areas 2 can be designed to be other values, at least one. The more the number of test sample areas 2, the higher the accuracy of evaluating the evenness of the cooking stove's firepower. In addition, the areas of multiple sample areas can be the same or different.

[0067] As Figure 1 shown, the method for evaluating the evenness of the cooking stove's firepower further includes the step of respectively obtaining the color values of the standard sample area 1 and several test sample areas 2 through a spectrocolorimeter.

[0068] Specifically, as Figure 2 shown, the steps for obtaining the color values of the standard sample area 1 and the test sample areas 2 are the same. The steps for obtaining the color value of a single sample area include: selecting multiple measurement points 3 along the radial direction of the pie.

[0069] Among them, in this embodiment, three measurement points 3 are selected for each sample area. The two end points of the sample area in the radial direction of the pie are each a measurement point 3, and there is one measurement point 3 between the two end points of the sample area in the radial direction of the pie. Generally, the color difference between the two end points of the sample area in the radial direction of the pie is the largest. Therefore, the two end points of the sample area in the radial direction of the pie and the point between them are selected as the measurement points 3, so that the calculated average value is more accurate and the accuracy of evaluating the evenness of the cooking stove's firepower is improved.

[0070] In other alternative embodiments, more measurement points 3 can be selected for each sample area, that is, there are more measurement points 3 between the two end points of the sample area in the radial direction of the pie, so as to further improve the accuracy of evaluating the evenness of the cooking stove's firepower. The number of measurement points 3 selected for different sample areas can be the same or different, and preferably the same.

[0071] Further, two adjacent measurement points 3 in the radial direction of a single sample area form a measurement segment, and the lengths of the measurement segments in a single sample area are the same. In the direction from the inner side to the outer side of the pie in the radial direction, the lengths of the measurement segments in different sample areas correspond to be the same, so that the measurement points 3 of different sample areas can be selected under the same conditions, reducing measurement errors and improving the accuracy of evaluating the evenness of the cooking stove's firepower.

[0072] In other alternative embodiments, the lengths of the measurement segments in a single sample area can be different, and the lengths of the measurement segments in different sample areas can also correspond to be different.

[0073] The steps for obtaining the color value of a single sample area further include: taking the color of each measurement point 3 through a spectrocolorimeter to obtain the color values L, a, b of each measurement point 3; where L is the lightness of the color, a is the position of the color on the red-green axis, and b is the position of the color on the yellow-blue axis.

[0074] Calculate the average value of each of the color values L, a, and b of multiple measurement points 3 in a single sample area.

[0075] In this embodiment, multiple measurement points 3 are selected within each sample area, and the average value of the color values of the multiple measurement points 3 is used as the color value of the sample area for comparison, preventing measurement errors caused by the color of a single measurement point 3 being too dark or too light, and improving the accuracy of judging the uniformity of the cooking stove firepower.

[0076] Such as Figure 1 shown, the method for judging the uniformity of the cooking stove firepower further includes the steps of: judging whether the color difference between the color value of the standard sample area 1 and the color value of any test sample area 2 is within a preset range; if so, judging that the cooking stove firepower is uniform; if not, judging that the cooking stove firepower is non-uniform.

[0077] Specifically, calculate the average values L0, a0, and b0 of each of the color values L, a, and b of each measurement point 3 in the standard sample area 1; calculate the average values L1, a1, and b1 of each of the color values L, a, and b of each measurement point 3 in a single test sample area 2.

[0078] Calculate the red-green color difference between the standard sample area 1 and each test sample area 2 , = .

[0079] Judge whether the red-green color difference between the standard sample area 1 and each test sample area 2 has a negative number; if so, directly judge that the cooking stove firepower is non-uniform, and there is no need to execute the step of calculating the comprehensive color difference between the standard sample area 1 and each test sample area 2; if not, initially judge that the cooking stove firepower is uniform, and continue to execute the step of calculating the comprehensive color difference between the standard sample area 1 and each test sample area 2.

[0080] Since the pancake will turn brown during the frying process, and the proportion of red has a greater impact on the depth of the brown color, the red-green color difference between the standard sample area 1 and each test sample area 2 can be compared first, thereby simplifying the judgment steps.

[0081] Furthermore, if the red-green color difference between the standard sample area 1 and any one test sample area 2 has no negative number, calculate the comprehensive color difference , = ; where = , = , = 。

[0082] Judge whether the comprehensive color difference values of the standard sample area 1 and each test sample area 2 are all within the preset range; if so, it is judged that the cooking fire is uniform; if not, it is judged that the cooking fire is uneven. In this embodiment, the preset range is greater than or equal to 0 and less than 6.

[0083] Further, in the case where it is judged that the cooking fire is uniform, the uniformity of the cooking fire can be further refined. Specifically, if the comprehensive color difference value is greater than or equal to 0 and less than 2, it is judged that the uniformity of the cooking fire is excellent; if the comprehensive color difference value is greater than or equal to 2 and less than 4, it is judged that the uniformity of the cooking fire is good; if the comprehensive color difference value is greater than or equal to 4 and less than 6, it is judged that the uniformity of the cooking fire is average.

[0084] In other alternative embodiments, the step of judging whether there is a negative value in the red-green color difference between the standard sample area 1 and each test sample area 2 may not be executed. Instead, the step of calculating the comprehensive color difference values of the standard sample area 1 and each test sample area 2 is directly executed 。

[0085] It should be noted that whether only the red-green color difference is compared , or the comprehensive color difference is compared , it is necessary to separately compare the standard sample area 1 and each test sample area 2. Only when all the comparisons meet the requirements can it be judged that the cooking fire is uniform. If the comparison between the standard sample area 1 and any one test sample area 2 does not meet the requirements, it is judged that the cooking fire is uneven.

[0086] In this embodiment, a spectrocolorimeter is used to obtain the color values of the sample areas. Compared with visual observation, the data accuracy of the color values of the sample areas is higher, making the color difference data between the standard sample area 1 and the test sample area 2 more accurate, and improving the accuracy of judging the uniformity of the cooking fire. Moreover, the time spent on making pancakes is less, meeting the user's requirement of achieving uniform cooking in a shorter time, and the judgment result is more in line with the user's daily usage habits.

[0087] Further, within 5 minutes after the pancake is fried to a state where it can be judged, obtain the color value of the standard sample area 1 and the color values of several test sample areas 2. In this embodiment, by restricting the time for obtaining the color values of the sample areas, it is possible to prevent the pancake from changing color due to too long time, and improve the accuracy of the color values of the obtained sample areas.

[0088] In other alternative embodiments, the time limit for obtaining the color values of the standard sample area 1 and the color values of several test sample areas 2 can be designed otherwise, and the color values can be obtained before the cake changes color.

[0089] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A method for judging the uniformity of firepower of a stove, characterized in that: The method for judging the uniformity of stove firepower includes the following steps: Fry the pancakes at the same heat until they are ready for judging; Taking the center of the cake as the center of the circle, the cake is divided into a plurality of sector-shaped sample areas along the circumference of the cake, and the plurality of sample areas include a standard sample area and a plurality of test sample areas; The color values ​​of the standard sample area and the color values ​​of several test sample areas are respectively obtained by a spectrophotometer; Determine whether the color difference between the color value of the standard sample area and the color value of any test sample area is within a preset range; if so, it is determined that the stove has uniform firepower; if not, it is determined that the stove has uneven firepower.

2. The method for judging the uniformity of stove firepower according to claim 1, characterized in that: In the step of respectively obtaining the color value of the standard sample area and the color values ​​of the plurality of test sample areas by using a spectrophotometer, the step of obtaining the color value of a single sample area specifically includes: Select multiple measurement points along the radial direction of the pie; The color of each measuring point is sampled by a spectrophotometer to obtain the color values ​​L, a, and b of each measuring point; where L is the lightness of the color, a is the position of the color on the red-green axis, and b is the position of the color on the yellow-blue axis; Calculate the average value of each of the color values ​​L, a, and b of multiple measurement points in a single sample area.

3. The method for judging the uniformity of stove firepower according to claim 2, characterized in that: In the step of selecting a plurality of measurement points along the radial direction of the pie, each of the two end points of the sample area in the radial direction of the pie is a measurement point, and the sample area includes at least one measurement point between the two end points in the radial direction of the pie.

4. The method for judging the uniformity of stove firepower according to claim 3, characterized in that: Two adjacent measuring points of a single sample area in the radial direction of the pie form a measuring segment; The evaluation method for the uniformity of stove firepower meets one or more of the following conditions: c1. In the step of selecting multiple measurement points along the radial direction of the pie, the lengths of the measurement segments in a single sample area are the same; d1. In the step of selecting multiple measurement points along the radial direction of the pie, the lengths of the measurement segments in different sample areas are the same.

5. The method for judging the uniformity of firepower of a stove according to claim 2, characterized in that: The steps of judging whether the color difference between the color value of the standard sample area and the color value of any test sample area is within a preset range; if so, judging that the stove has uniform firepower; if not, judging that the stove has uneven firepower specifically include: Calculate the average values ​​L0, a0, b0 of the color values ​​L, a, b of each measurement point in the standard sample area; Calculate the respective average values ​​L1, a1, b1 of the color values ​​L, a, b of each measurement point in a single test sample area; Calculate the comprehensive color difference between the standard sample area and each test sample area , = ;in, = , = , = ; Determine the comprehensive color difference between the standard sample area and each test sample area Are they all within the preset range? If so, it is judged that the firepower of the stove is uniform; if not, it is judged that the firepower of the stove is uneven.

6. The method for judging the uniformity of firepower of a stove according to claim 5, characterized in that: The comprehensive color difference between the standard sample area and each test sample area In the step of determining whether all of the values ​​are within a preset range, the preset range is greater than or equal to 0 and less than 6.

7. The method for judging the uniformity of firepower of a stove according to claim 6, characterized in that: The comprehensive color difference between the standard sample area and each test sample area Are they all within the preset range? If the comprehensive color difference value If it is greater than or equal to 0 and less than 2, the stove’s firepower uniformity is judged to be excellent; If the comprehensive color difference value If it is greater than or equal to 2 and less than 4, the stove fire uniformity is judged to be good; If the comprehensive color difference value If it is greater than or equal to 4 and less than 6, the stove's fire power uniformity is judged to be average.

8. The method for judging the uniformity of firepower of a stove according to claim 5, characterized in that: In the step of determining whether the color difference between the color value of the standard sample area and the color value of any test sample area is within a preset range, the comprehensive color difference between the standard sample area and each test sample area is calculated. Before the step, it also includes the steps: Calculate the red and green difference between the standard sample area and each test sample area ; Determine the red and green difference between the standard sample area and each test sample area Is there a negative number? If so, it is directly judged that the stove has uneven firepower, and there is no need to calculate the comprehensive color difference value of the standard sample area and each test sample area If not, it is preliminarily determined that the stove has uniform firepower, and the calculation of the comprehensive color difference value of the standard sample area and each test sample area is continued. steps.

9. The method for judging the uniformity of firepower of a stove according to claim 1, characterized in that: The evaluation method for the uniformity of stove firepower meets one or more of the following conditions: c2. In the step of dividing the cake into a plurality of sector-shaped sample areas along the circumference of the cake with the center of the cake as the center of the circle, the number of the test sample areas is multiple; d2. In the step of dividing the cake into a plurality of sector-shaped sample areas along the circumference of the cake with the center of the cake as the center of the circle, the area of ​​the standard sample area and the area of ​​each test sample area are the same.

10. The method for judging the uniformity of firepower of a stove according to any one of claims 1 to 9, characterized in that: In the step of frying the pancakes to a state that can be evaluated under the same firepower, the method for evaluating the uniformity of the firepower of the stove meets one or more of the following conditions: c3. Obtain the color value of the standard sample area and the color values ​​of several test sample areas within 5 minutes after the pancake is fried to a state ready for evaluation; d3, the pancake is a hand-held pancake; e3. Cook only one side of the pancake.

Images