JP2976607B2 - Automatic bread maker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic bread maker used in ordinary households.

[0002]

2. Description of the Related Art A conventional automatic bread maker will be described below. First, the configuration of the main body is the same as that of FIG. 1 of the present invention, and therefore FIG. 1 of the embodiment of the present invention will be described.

[0003] 1 is a baking chamber, 2 is a heater, 3 is a bread baking type detachably mounted, 4 is a motor, 5 is a belt for transmitting the power of the motor 4, 6 is a kneading blade driven by the motor 4, 7. Is a first temperature detecting portion which comes into contact with the outer surface of the baking mold 3 to detect the temperature of the baking mold 3 for process determination and temperature control, 8 is a lid, 9 is a yeast input port for inputting yeast, and 10 is yeast input. A solenoid for dropping the yeast in conjunction with the valve of the mouth 9, a control device 11 for performing all the controls of the baking, and a control device 1 for detecting the room temperature for the process determination on the control device 11.
1 is a second temperature detecting section provided in the first temperature detecting section.

In an automatic bread maker having such a configuration,
Conventional cooking processes are divided into a plurality of processes such as a high-temperature process, a medium-temperature process, a low-temperature process, and a low-temperature process, depending on the room temperature and the temperature of the baking mold as shown in FIG.

[0005] This is necessary especially for French bread or the like that requires delicate temperature adjustment, and a first temperature detection for detecting the temperature of a bread baking mold at the time of process determination 21 after a certain time after start 20. According to the combination of the unit 7 and the second temperature detecting unit 12 for detecting the room temperature, the process was determined according to the detected temperature as shown in the table of FIG.

That is, if the temperature of the first temperature detecting unit 7 for detecting the temperature of the baking mold is, for example, 30 ° C. or more, the temperature is 30 ° C.
If the temperature of the second temperature detection unit 12 for detecting the room temperature is 30 ° C or higher, if the temperature is lower than 30 ° C and 28 ° C or higher,
The temperature is divided into three cases where the temperature is lower than 28 ° C., and four combinations of a high temperature process, a medium temperature process, a low temperature process, and a low temperature process depending on the nine cases as shown in FIG.
It was set to split into two processes.

[0007]

However, if the process is divided into a plurality of processes as described above, for example, the aging time in the middle temperature process and the low temperature process is 60 minutes and 20 minutes, respectively, and the control value becomes discontinuous between the processes. Has become.

For this reason, near the boundary of each process,
There was an inconvenience that the finished product may be different due to a slight difference in temperature.

The present invention solves the above-mentioned conventional problems. A first object of the present invention is to interpolate between processes that have been discontinued by fuzzy inference so that a slight temperature change does not cause a difference in the finished product. Aim.

In addition, the structure is extremely simplified by fixing the first temperature detecting section to the outer surface of the baking chamber, and the detected temperature is processed by fuzzy inference to directly detect the temperature of the baking mold. A second object is to obtain the same effect as described above.

[0011]

According to the present invention, there is provided a baking chamber having a heater, a baking mold detachably mounted in the baking chamber, and an inner bottom of the baking mold. A dough blade driven by a motor, a first temperature detecting unit for detecting the temperature of the dough by contacting the outer surface of the baking mold, a second temperature detecting unit for detecting the room temperature, And a controller for performing baking control by detecting the temperature by the section, wherein the controller detects the temperatures of the first and second temperature detecting sections at a certain point in time after the start of cooking and fuzzyly detects these temperatures. performs fuzzy inference as antecedent reasoning, aged time, kneading time, fermentation time, degassing time, baking time, have a fuzzy inference unit for determining the control temperature, etc., the first temperature detector
Is an automatic bread maker in contact with the outer surface of the baking chamber.
You.

[0012]

According to the above configuration, the fuzzy inference is performed based on the temperatures from the two temperature detectors, and the control value of the process control is continuously determined for all the temperatures. A good-quality bread can be cooked under any temperature conditions without any difference.

[0013] Further , the mounting structure of the first temperature detecting portion becomes extremely simple.

[0014]

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

The description of the structure of FIG. 1 has been described in the section of the prior art, and will not be described. FIG. 2 is a block diagram of the embodiment of the present invention. The control device 11 inputs the temperatures of the first temperature detecting section 7 and the second temperature detecting section 12, and the fuzzy inference section 30 performs the fuzzy inference. 5 is output for each of the four processes shown in FIG. 5, and in the control value calculation unit 31, depending on the fitness of each process, the setting time, kneading time, each fermentation time, baking time, on / off pattern of degassing, each process The control values such as the control temperature are determined, and the heater 2, the motor 4, and the solenoid 10 are controlled by the actuator control unit 32 in accordance with the control values determined here, and the cooking proceeds.

FIGS. 3A and 3B show membership functions of the temperatures Tp and Tr input from the first temperature detector 7 and the second temperature detector 12, respectively, where L = low temperature M = Medium temperature H = High temperature Three labels are set.

FIG. 4 shows a fuzzy rule, and the degree of conformity to each process in nine cases, such as if (Tp = H and Tr = H) then (HP), is calculated.

The label in the consequent part means HP = fitness to high temperature process MP = fitness to medium temperature process LP = fitness to low temperature process LLP = fitness to low / low temperature process.

Assuming that the degree of conformity to each process is calculated and the following results are obtained, for example, from the four rules that do not include 0, from rule 1, HP = 0.8 from rule 2, MP = 0.2 From Rule 3, MP = 0.2 From Rule 4, LP = 0.2 From this, HP = 0.8 MP = 0.2 + 0.2 = 0.4 LP = 0.2, which is normalized to HP = 0.2 0.8 / (0.8 + 0.4 + 0.2) = 0.5714 MP = 0.4 / (0.8 + 0.4 + 0.2) = 0.857 LP = 0.2 / (0.8 + 0.4 + 0.2) ) = 0.1429 This is the degree of conformity to each process, which is passed to the control value calculation unit 31 and the control value of each process shown in the process diagram of FIG. I do.

The control value includes a time element such as a setting time, a kneading time, and a fermentation time, and a temperature element such as a temperature adjustment temperature in the fermentation process. .

For example, if the setting time is HP = 70 minutes, MP = 60 minutes, LP = 20 minutes, the control value P becomes P = 70 × 0.5714 + 60 × 0.2857 + 20 × 0.1429 = 60, and the control value P becomes 60. = 60 minutes is determined.

As described above, the same calculation is performed for other control values, and all control values are determined. All the actuators are controlled by the actuator control unit 32 according to the determined control values, and cooking proceeds.

FIG. 5 is a process diagram showing a process determined by Tp and Tr as described above, and schematically shows the baking temperature Tp in the vertical direction, the room temperature Tr in the front-back direction, and the time to completion in the left-right direction. It is a representation.

Here, the total time of all the steps calculated by the control value calculation section 32, that is, the time from the start of cooking to the end of cooking is always constant regardless of the detected temperatures T1 and T2.

FIGS. 6 and 7 show a second embodiment in which the first temperature detecting section 7 is mounted in contact with the outer surface of the baking chamber 1. In the case of such a structure, FIG. It is necessary to control the process while estimating the temperature of the baking mold from the temperature of the baking chamber 1, but the temperature input from the first temperature detection unit 7 is used as the antecedent of the fuzzy inference as described above, and Tp and By appropriately determining the membership function of the Tr, the fuzzy rule, and the control values of the four processes by experiments, almost the same control as in the case where the first temperature detection unit 7 directly abuts on the bread baking mold 3 to directly detect the temperature is performed. Can be performed.

[0026]

As is apparent from the above description, the present invention performs the fuzzy inference based on the temperatures from the two temperature detectors, thereby continuously controlling the process control value for all temperatures. In order to decide, there is no difference in the finished product due to a slight temperature change, and the intuition and experience of the human are incorporated in the fuzzy inference, the optimal process control is performed at all temperature conditions, and always good quality bread regardless of room temperature It should be cookable.

Further, the first temperature detecting section is fixed to the outer surface of the firing chamber, so that the mounting structure is simplified, and the temperature is processed by fuzzy inference.
The same process control as when attached to a bread baking mold is enabled.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a first embodiment of the present invention.

FIG. 2 is a block diagram of a first embodiment of the present invention.

FIG. 3 is a diagram showing a membership function of a detected temperature according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a fuzzy inference rule according to the embodiment of the present invention.

FIG. 5 is a process diagram showing a cooking process of an embodiment.

FIG. 6 is an overall configuration diagram of a second embodiment of the present invention.

FIG. 7 is a block diagram of a second embodiment of the present invention.

FIG. 8 is a process diagram showing a conventional cooking process.

FIG. 9 is an explanatory view showing that a process is determined based on a detected temperature in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Baking room 2 Heater 3 Bread type 4 Motor 6 Mixing blade 7 1st temperature detection part 11 Controller 12 Second temperature detection part 30 Fuzzy inference part

Claims (1)

(57) [Claims] 1. A baking chamber having a heater, a baking mold removably mountable in the baking chamber, a dough blade provided at an inner bottom of the baking mold and driven by a motor, and an outer surface of the baking mold A first temperature detecting section for detecting the temperature by contacting the first and second temperature detecting sections, a second temperature detecting section for detecting the room temperature, and a control device for detecting the temperature by these temperature detecting sections and performing the baking control. The controller detects the temperatures of the first and second temperature detectors at a certain point in time after the start of cooking, performs fuzzy inference using these temperatures as antecedents of fuzzy inference, time, fermentation time, degassing time, baking time, have a fuzzy inference unit for determining the control temperature, etc., the first temperature detector
Is applied to the outer surface of the baking chamber instead of the outer surface of the baking mold.
An automatic bread maker that comes in contact .