JPH04129007U - heating cooker - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the accuracy of heating control based on the initial temperature in the heating chamber and the rise time of the temperature in the heating chamber. [Configuration] The control circuit 17 determines whether the initial temperature in the heating chamber measured by the temperature sensor 16 is "low" or "medium".
In addition to whether it is "high" or "high", whether the rise in temperature of the heating chamber detected by the temperature sensor when grilling food is "fast", "medium", or "slow"? Observing heating in terms of membership functions and assigning a grade to each observation,
Fuzzy inference is performed based on the observation results, and the optimal heating time is corrected and determined based on the information of the menu selection device, so that the optimal heating time for the quality and quantity of food ingredients can be completed. Now I can do it.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to heating cookers such as grills and ovens.

0002

[Conventional technology]

The automation of heating cooking has progressed, making it easier to achieve optimal heating.

0003 As an automatic cooker of this kind, it operates a grill heater or oven heater. Observe the rise (gradient) of the temperature in the heating chamber afterward to determine the amount of food stored in the heating chamber. Estimate and determine the amount of energy required for heating and the time required for heating to achieve optimal heating. What we do is put into practical use.

0004

[Problem that the idea aims to solve]

However, with the control method described above, the temperature in the heating chamber varies depending on the type of food. Differences in uphill or slope can only be determined as differences in the amount of food, and only limited types of food can be detected. It was only available for food items. Also, when the heating chamber condition is high or low, Even if the food is the same, there will be differences in the rising temperature, so it depends on the temperature of the heating chamber. In some cases, automatic control was not possible.

[0005] Please note that it is important to assume all possible situations and to be able to satisfy all of them. Although it is not impossible, it would simply increase the memory capacity and make it impractical. That's what happens.

[0006]

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention aims to solve the above-mentioned problems by In addition to determining whether the initial temperature in the room is “low,” “medium,” or “high,” the heating Does the temperature in the heating room rise quickly, moderately, or slowly after the heating starts? Observe the heating from the perspective of whether it is good or not. For this purpose, each area is - membership function, and observation results from each membership function. Assign a grade to each. Then, based on the observation results, Gee inference is performed to determine the optimal time required for heating. At that time, prepare in advance for each cooking item. The time required for heating is corrected according to the information provided, and unnecessary energy consumption is avoided. Complete heating cooking.

[0007]

[Effect]

Is the initial temperature in the heating chamber measured by the temperature sensor "low" or "medium"? , or is it "high"? In addition, the rise in temperature in the heating chamber after heating starts is "high". Membership function perspective: “early,” “medium,” or “slow.” After each grade is observed from the pre-prepared fuzzy inference The time required for heating is determined according to the rules, and the time required for heating is determined in advance for each cooking item. The time required for heating is corrected based on the information obtained, allowing heating adjustment without wasting energy. principles are carried out.

[0008]

【Example】

An embodiment of the present invention will be described below with reference to the drawings.

[0009] Figure 1 is a side cross-sectional view of one embodiment of the present invention, where 1 is a heating chamber, and 2 is housed in this heating chamber. The example shown is saury sprinkled with salt. 3 and 4 are on the heating chamber ceiling. 5 and 6 are the grills attached to the heater chambers 3 and 4. It's Lujita. These grill heaters 5 and 6 are sheathed heaters or ceramic tubes. It is a type that emits abundant infrared energy by red heat such as a vent heater. be. 7 is an exhaust air passage that passes through the grill heater chambers 3 and 4 and the outside of the cooker body; This is the exhaust outlet portion of the exhaust air passage 7. Reference numeral 9 is provided in this exhaust outlet portion 8 and is connected to the aforementioned grill. The air inside the heating chamber 1 is sucked through the heater chambers 3 and 4 and the exhaust air passage 7, and the air is then regulated. This is a suction type blower for discharging water outside the main body. 10 is a heater for generating hot air. , 11 is a hot air fan for circulating the hot air into the heating chamber. 12 is a mug In Netron, 13 is the opening/closing door, 14 is the turntable, and 15 is this turntable. This is a motor for driving the wheel. 16 is a temperature sensor that detects the temperature inside the heating chamber; 17 is a temperature sensor that detects the temperature inside the heating chamber; In addition to performing so-called fuzzy inference based on the signal from the temperature sensor 16, To control the operation of the heaters 5 and 6, the hot air generation heater 10, and the fans 9 and 11. The control circuit consists of a microcomputer. And 18 is the cooking menu - It is a selection device, and the final value calculated by the control circuit 17 mentioned above is the cooking menu. Coefficients as correction information are sent to the control device 17 so that the final value is determined according to the new condition. and a constant.

0010 Next, FIG. 2 shows the initial temperature in the heating chamber measured by the temperature sensor 16. Figure 3 shows an example of the so-called conditional membership function of The so-called conditions regarding the rise in temperature in the heating chamber detected by the temperature sensor 16 after An example of the subject membership function and Figure 4 are fuzzy inference rules. An example of the conclusion membership function for the heating time to be determined according to This is what is shown.

[0011] Now, set the salted saury in the heating chamber 1 of the cooker shown in Figure 1, and Let us operate the heaters 5 and 6 to grill fish.

0012 At the start of cooking, the control circuit 18 detects the initial temperature in the heating chamber by means of the temperature sensor 16. In addition to measuring the temperature rise in the predetermined heating chamber through the same temperature sensor 16 during heating. In other words, the time required for a predetermined rise is measured.

[0013] Now, assuming that the measured temperature in the heating room is 35°C, as shown in Figure 2, In addition to obtaining a grade of 0.7 for the membership function "I", For the membership function "moderate", a grade of 0.2 is obtained. It looks like this.

[0014] Next, regarding the rise in heating chamber temperature, suppose that a predetermined temperature rise is detected in 4 minutes. , a grade of 0.3 is obtained for the membership function "fast". In addition, there is a grade of 0.6 for the “moderate” membership function. It is now possible to obtain it.

[0015] Regarding the initial temperature in the heating chamber, the membership function of "high" Needless to say, it is now possible to obtain a grade of . Also, the rising The same applies to "slow".

[0016] In the embodiment of the present invention, nine fuzzy inference rules are used as shown in Figure 5. It is provided as a table in the control circuit 17, and is used to indicate that the initial temperature in the heating chamber is "low". (grade 0.7) and the rise is “quick” (grade 0.3). As shown in Rule 1, "low" (grade 0.3) is given as a way to calculate the required heating time. It is being Also, if the initial temperature in the heating chamber is “low” (grade 0.7), the rise will be slow. Rules for determining the heating time required for "moderate" (grade 0.6) 2, "moderate" (grade 0.6) is given. In addition, the heating room The initial temperature is “medium” (grade 0.2) and the rise is “quick” (grade 0.3) In this case, the way to calculate the required heating time is to use "low" (grade) as in rule 4. 0.2), and the initial temperature in the heating chamber rises to "medium" (grade 0.2). When the heating time is "medium" (grade 0.6), the required heating time is calculated using the following rule. "Moderate" (grade 0.2) is given, as in Le 5.

[0017] As can be seen from this rule table Figure 5, the handling when each condition is combined is Regarding the membership function of the conclusion section regarding the required heating time, refer to the group of the condition section. I try to take the minimum value of the rades.

[0018] Figure 4 shows the logic of the conclusion membership function obtained according to the rules described above. It is a diagram that shows the sum, or the whole, and the grade includes all conclusions. The maximum value is taken so that The hatched area indicates the area It is.

[0019] After performing this fuzzy inference, the control circuit 17 determines the area center of gravity of the hatched area. , and derive a definitive value regarding the required heating time. The area center of gravity in Figure 4 is when heating is required. Since the position is 23 minutes and 50 seconds, the control circuit 17 is activated when the grill heaters 5 and 6 are activated. The heating time of 25 minutes 00 seconds, which is set as a standard value, is canceled and shortened. The tentative conclusion was that the device should be heated for the specified amount of time and terminate its operation. .

[0020] Here, the conclusion is that the required time is to adjust the seasoning of grilled saury sprinkled with salt. This is because it is limited to reason. In other words, when cooking grilled fish such as filleted fish, add salt. Since it does not need to be heated for as long as it is for dried saury, it cannot be used as is. It is the body. Also, as in the case of gratin cooking, it requires more time. This is because it cannot be used in cases where it is necessary.

[0021] In order to deal with such a situation, in the present invention, the control circuit 17 Based on the set information of the menu selection device 18, a computation is performed to correct the final value.

[0022] If the definite value obtained from the membership function in the conclusion section of Figure 4 is the required heating time T, then Then, the required heating time T', which is corrected for each menu, is It is calculated using the formula T'=T×M+L.

[0023] However, for the coefficient M and the constant L, please use the menu as shown in the table in Figure 6. It is designed to be selected according to the selection.

[0024] Therefore, after the menu selection device 18 is set to salt-grilled saury, When the heating process is performed, the correction coefficient is 1 and the constant is 0, so the required heating time is will not be corrected.

[0025] On the other hand, when grilling fish fillets, the heating room temperature is lower than when grilling saury as mentioned above. There is a tendency for the temperature to rise almost twice as quickly, but if it is similar to the saury mentioned above, If heating is performed at the initial temperature in the heating chamber and the rise time of the temperature in the heating chamber, Then, the fuzzy inference concludes that the heating time is 23 minutes and 50 seconds. death However, if the menu selection device 18 is set to grilled fish fillet, that information According to the table in Figure 6, the sample will be corrected accordingly. The heating time required for saury was calculated to be 12 minutes and 25 seconds, which is almost half of the time required for saury. The heating work can be completed in a much shorter time.

[0026] Similarly, in the case of gratin heating, the fuzzy inference result is 23 minutes and 50 seconds. Even if it appears, if the menu selection device 18 has selected and set gratin, then 29 Minutes and 16 seconds are calculated, which is a slightly longer heating time than in the case of saury. In this way, there will be no overcooking, and in other words, wasted energy will be dissipated. To efficiently cook grilled fish without spending a lot of money.

[0027]

[Effect of the idea]

As described above, according to the present invention, the initial temperature inside the heating chamber measured by the temperature sensor is In addition to whether the temperature is "low," "medium," or "high," The temperature rise in the heating chamber detected by the temperature sensor when heating is performed. Is the time required for a given temperature rise "fast", "medium", or "slow"? We observe heating from the perspective of membership functions such as and perform fuzzy inference based on the observed results. , and the optimal heating time required for each menu is determined, so the quality of food ingredients can be improved. It is now possible to complete cooking with heat that is optimal for the amount of food and quantity.

[0028] The above explanation was about grill heating, but it also applies to oven heating. Needless to say, this also applies to cases.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention.

FIG. 2 is a diagram showing a condition part membership function regarding the initial temperature in the heating chamber.

FIG. 3 is a diagram showing a conditional membership function regarding the rise in temperature in the heating room.

FIG. 4 is a diagram showing a conclusion part membership function.

FIG. 5 is a rule table for fuzzy inference.

FIG. 6 is a table of coefficients and constants for correcting the required heating time according to the menu.

[Explanation of symbols]

1 Heating chamber 2 Food 7 Exhaust air duct 8 Exhaust outlet 16 Temperature sensor 17 Control circuit 18 Menu selection device

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Masanori Shimozawa Nihon Co., Ltd. 23-1 Shinjuyo, Kashiwa City, Chiba Prefecture Inside the standing platform tech

Claims (1)

[Scope of utility model registration request] [Claim 1] A heating chamber (1) that stores food materials, and heaters (5, 6) that heat the food stored in this heating chamber.
and a temperature sensor (16) that measures the temperature in the heating chamber.
a menu selection device (18) that outputs information for correcting the required heating time according to the cooking menu; and an initial temperature at the start of heating measured by the temperature sensor and the temperature at the time when grill heating of the food starts. Whether the time required for the heating chamber temperature to rise to a predetermined temperature detected by the sensor is "low,""medium," or "high," and whether it is "fast,""medium," or "slow." An inference rule that provides a grade for each conditional membership function for the observation results observed from the perspective of membership functions such as, and prepares in advance the grade of the conclusion membership function to be obtained based on these conditional membership functions. In addition to calculating the area gravity center of the logical sum of the conclusion section membership functions determined according to the table and determining the determined value, the correction information outputted by the menu selection device is taken in to correct the determined value and the heater A heating cooker comprising a control circuit (17) that adjusts the time required for heating.