JPH0411627Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an automatic bread maker that automatically performs a series of steps from kneading bread ingredients to baking.

(Prior Art) In recent years, various automatic bread makers have been provided that can easily bake bread at home. This automatic bread maker mixes the bread ingredients flour, yeast, salt, and water, adds butter, sugar, etc., kneads the mixture, performs primary fermentation, degasses, and then molds, ferments, and bakes. This series of steps is automatically performed through sequence control operations.

(Problems to be solved by the invention) However, in the conventional automatic bread maker,
Since the sequence control circuit is assembled in advance according to the process determined by the manufacturer, the user cannot adjust or change the bread making process. For this reason, it is not possible to bake bread to the desired hardness and degree of baking to the user's preference, and it is also not possible to make various types of bread by appropriately changing ingredients such as flour, yeast, and sub-materials, which causes dissatisfaction for the user. It was something that remained.

The present invention was developed in view of the above problems, and the purpose is to provide an automatic bread maker that allows the user to adjust and change the sequence control circuit and to make bread according to the user's preference. do.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention is based on the on-signal of the switch that the operator determines at the end of each bread-making process and operates at that time. , a setting means for setting the time required for the process, a storage means for storing the time of a series of processes set by the setting means, and sequence control according to the time of the process stored by the storage means. It is equipped with a reproduction means.

(Example) Next, an example of the present invention will be described with reference to the accompanying drawings.

Figure 2 shows an automatic bread maker according to the present invention, 1
is the main body, 2 is the lid, 3 is the bread container, 4 is the drive shaft, 5
6 is a rotating blade, 6 is a mixing motor, 7 is an internal heater, 8 is a fan, 9 is a fan heater, and 10 is a control device.

The interior of the main body 1 is divided into two chambers by an inner wall 11, one of which is a cooking chamber that accommodates the bread container 3, and the other a machine chamber that accommodates the mixing motor 6 and fan 8.

The lid 2 covers the cooking chamber, has a viewing window 2a formed in a part thereof, and is attached to the main body 1 so as to be openable and closable.

The bread container 3 is detachably mounted on a mounting table 13 attached to the bottom of the cooking chamber of the main body 1 via a support member 12.

The drive shaft 4 is rotatably mounted on a sleeve 16 supported by the support member 12, and its upper end side passes through the mounting table 13 and the bottom of the bread container 3 and protrudes into the bread container 3. The blade 5 is removably fitted. A pulley 17 is attached to the lower end of the drive shaft 4 and connected to a mixing motor 6 via a drive belt 18 and a pulley 19, and is rotationally driven by the mixing motor 6.

The fan 8 has a suction port 20 provided on the inner wall 11.
The air in the cooking chamber is circulated by blowing the air sucked in from the outlet 20b toward the bread dough in the bread container 3, and a fan heater is provided to heat the circulating air as necessary. 9 is provided at the suction port 20a.

The control mounting 10 is provided inside a display/operation panel 10a provided on the front of the main body 1, and includes a microcomputer 21. As shown in FIG. 3, this microcomputer 21 mainly includes a central processing unit (hereinafter referred to as CPU) 22,
Read-only memory (hereinafter referred to as ROM) 23,
It is composed of a read/write memory (hereinafter referred to as RAM) 24, a timer 25, and an input/output port (hereinafter referred to as I/O port) 26.

The CPU 22 operates the mixing motor 6, the fan motor 8a, the internal heater 7, and the fan heater in cooperation with the timer 25 according to a control program written in advance in the ROM 23 or a control program written in the RAM 24 by manual operation described later by the user. 9, sequentially knead, primary fermentation, primary degassing, secondary fermentation, secondary degassing,
Each step of molding fermentation, baking, and cooling is performed.

The mixing motor 6 and the fan motor 8a are
As shown in Figure 4, relays Ry ₂ and Ry ₁
Connected to the power supply through the contacts of each relay Ry ₁ ,
Ry ₂ is a driver transistor connected to the I/O port 26 of the microcomputer 21
Connected to the collectors of Tr ₁ and Tr ₂ . Also,
The internal heater 7 and the fan heater 9 are connected in series with triaxes 27 and 28, respectively, and each triax 27 and 28 has a driver transistor Tr ₄ ,
I/O of microcomputer 21 via Tr ₃
It is connected to port 26.

In Figure 4, Tr ₅ is a transistor constituting the voltage stabilization circuit, ZD is a stabilizing Zener diode, C ₁ is a stabilizing capacitor, C ₂ is a phase advance capacitor, D is a protection diode, and PT is a power supply. The transformer 30 is a DC power supply circuit.

Further, in FIG. 2, numeral 31 is a material temperature sensor for detecting the temperature of bread ingredients, which is provided inside the tip of the drive shaft 4, and 32 is an internal temperature detection sensor for detecting the internal temperature of the cooking chamber of the main body 1. It is provided on the inner wall 11 of.

On the other hand, as shown in FIG. 1, the display/operation panel 10a has a fully automatic switch 3 for automatic operation.
3 and a semi-automatic switch 34, a feed switch 35 and a memory switch 36 are provided for manual operation, and a cancel switch 37 and an operation display LED 38 that lights up for each bread making process.
a, 38b, 38c, 38d, 38e, and 38f are provided.

Fully automatic switch 33 and semi-automatic switch 34
is a start switch for starting the sequence control operation according to the control program written in the ROM 23 of the microcomputer 21. The former automatically performs all processes from kneading to baking and cooling, and the latter The process from kneading to molding and fermentation is performed automatically, and subsequent steps are continued only when the feed switch 35 is pressed.

The feed switch 35 is a switch for moving from one bread making process to the next process and for storing the time required for the previous process in the RAM 24.

The memory switch 36 is a switch for storing the time required for a series of bread making processes stored in the RAM 24 by the feed switch 35,
Cancellation switch 37 is a switch for canceling it.

Next, the control operation during manual operation of the automatic bread maker having the above configuration will be explained with reference to the flowcharts shown in FIGS. 5 to 7.

When the power is turned on, the microcomputer 2
1, as shown in FIG. 5, determines whether the memory switch 36 is pressed down in step 1,
If it is pressed down, move on to step 5.
A reproduction mode of the previous bread making process stored in the RAM 24 is executed. If the memory switch 36 has not been pressed down, it is determined in step 2 whether the feed switch 35 has been pressed down. Here, if the feed switch 35 is not pressed down, it waits until it is pressed down, and if it is pressed down, after starting the timer 25 in step 3, the kneading operation of the bread ingredients is started.

After the kneading operation starts, the microcomputer 21
As shown in FIG. 6, it is determined in step 12 whether or not the feed switch 35 has been pressed down.
Continue kneading in step 11 until it is pressed down. Then, when the feed switch 35 is pushed down, the time required for the kneading operation is determined in step 13.
After storing it in the RAM 24, the process shifts to the next mode, the primary fermentation operation. Similarly, each operation from primary fermentation, primary degassing, secondary fermentation, secondary degassing, molding fermentation, and baking to cooling, which is the final bread making process, is performed according to steps 11 to 14.

When the cooling operation, which is the final mode, is completed, the microcomputer 21 performs termination processing such as buzzer notification, and as shown in FIG.
At step 23, it is determined whether the memory switch 36 has been pressed down and whether 5 minutes have elapsed or not, and the end mode state (input waiting state) of step 21 is continued until the memory switch 36 is pressed down. If the memory switch 36 is pressed down within 5 minutes, the time required for each mode of operation from kneading to cooling, that is, the entire sequence, is stored in the RAM 24 in step 24, and the process ends. Also, even after 5 minutes have passed, the memory switch 36
If is not pressed down, the time required for each mode operation is not memorized and ends.

Next, the operations of each bread making process executed according to the flowchart will be explained.

First, put yeast into bread container 3,
Next, flour and other ingredients are added so as to cover the yeast, and finally water is added so that the yeast and water are separated by the bread ingredients.

In this state, if you want to bake bread by reproducing the same process as the previous bread-making process, press the memory switch 36, and if you want to bake bread in a new bread-making process this time, press the feed switch 35. Here, it is assumed that the feed switch 35 is pressed down.

When the operator determines the end time of each process and presses down the feed switch 35, the internal heater 7, fan heater 9, and mixing motor are activated according to the flowcharts shown in FIGS. 5 to 7 as described above. 6. The fan motor 8a is controlled and bread is made. Although not shown in Figure 4,
Operation display LED corresponding to each process
38a, 38b, 38c, 38d, 38e, 38
f is now lit.

When the feed switch 35 is pressed down for the first time, the transistor Tr ₂ is turned on by the signal from the microcomputer 21 and the relay Ry ₂ is excited, so the drive circuit of the mixing motor 6 is closed by the contact, and the mixing motor 6 is started,
The rotary blades 5 are driven via the pulley 19, drive belt 18, pulley 17, and drive shaft 4, and kneading of the bread ingredients is started.

Next, the operator determines when the bread ingredients are sufficiently kneaded and presses the feed switch 35. Then, the time required for the kneading operation is stored in the RAM 24, and at the same time, the transistor Tr ₂ is turned off by a signal from the microcomputer 21, and the relay Ry ₂ is demagnetized, so the mixing motor 6 is stopped and the primary fermentation process is started. Proceed to.

Here, the operator presses the feed switch 35 when fermentation has been carried out to a certain extent. Then, the rotating blade 5 is driven again by the mixing motor 6 to perform primary degassing. The operator then presses the feed switch 35 when he/she judges that this degassing has been sufficiently performed. Similarly, secondary fermentation,
After performing secondary gas venting and molding fermentation, when the feed switch 35 is pressed, the microcomputer 21
The signal from turns on transistor Tr ₄ ,
Since a negative gate trigger voltage is applied to the gate, the triax 27 is turned on, energization to the internal heater 7 is started, and baking is performed.

When the operator judges that the bread is baked, he presses the feed switch 35 and the transistor
Tr ₄ is turned off, the triax 27 is turned off, and the supply of electricity to the internal heater 7 is stopped. and,
The transistor Tr ₁ is turned on by a signal from the microcomputer 21, and the relay Ry ₁ is excited, so that the fan 8 is driven and the bread is cooled by the air blown from the fan motor 8a. Then, the operator determines when the bread has cooled to the appropriate temperature and presses the feed switch 35, then presses the memory switch 36 if he wants to memorize the above bread-making process, and leaves it alone if it is not necessary. . This completes the manual bread making by the operator.

In the case of fully automatic or semi-automatic operation, the above operations are automatically performed according to a predetermined program, and the explanation thereof will be omitted.

FIG. 8 shows a display/operation panel 10b of an automatic bread maker according to a second embodiment of the present invention, in which a kneading/degassing switch 39, a fermentation It is substantially the same as the panel 10a, except for the provision of four types of switches: a switch 40, a baking switch 41, and a cooling/end switch 42, and corresponding parts are given the same numbers and explanations will be omitted.

These four types of switches 39, 40, 41,
42 are switches for starting the kneading/degassing process, fermentation process, baking process, and cooling/finishing process, respectively, and at the same time storing the time required for the previous process in the RAM 24.

Therefore, in the automatic bread maker according to the second embodiment, the four types of switches 39, 40, 41, 4
By pressing 2 in sequence, bread can be made according to the standard bread-making process from kneading bread ingredients to baking and cooling. Further, by alternately pressing the kneading/degassing switch 39 and the fermentation switch 40 several times, it is possible to carry out tertiary fermentation or even quaternary fermentation, thereby making it possible to sufficiently prepare the bread dough. Furthermore, with this automatic bread maker, you can ferment the bread dough and then take it out and bake it in an oven, or you can knead and ferment the bread ingredients outside the machine and only bake it with this automatic bread maker. It is possible.

The internal heater 7 is mainly used to bake bread dough, but if the yeast comes into contact with cold water during kneading, it will not ferment sufficiently in the subsequent process. It is also used to preheat the material to a predetermined temperature before starting. In this case, the temperature inside the refrigerator is detected by the refrigerator temperature sensor 32, and upon receiving the signal, the CPU 22 controls the driver transistor Tr ₄ on and off to maintain the temperature inside the refrigerator at a predetermined temperature, for example, 40°C. Preferably, the material temperature is detected by a material temperature sensor 31 disposed inside the drive shaft 4, and kneading is started after the material temperature reaches a predetermined temperature, for example, 25°C.

As mentioned above, the fan heater 9 is mainly used to cool the finished bread after baking, but when the material temperature tends to drop during kneading, such as in winter, it can be used to supplementally heat the bread materials. May be used for In this case, after a predetermined period of time, for example, 1 minute, has passed after the start of kneading, a signal is received from a counter that starts counting at the same time as the start of kneading.
Turn on transistor Tr ₁ with CPU22 and relay
While Ry ₁ closes the drive circuit of the fan motor 8a, the transistor Tr ₃ is turned on and the triax 28 starts energizing the fan heater 9. After heating the air inside the refrigerator with the fan heater 9, it is directed to the bread ingredients. What is necessary is to spray from the discharge port 21 once.

(Effect of the invention) As is clear from the above explanation, according to the invention, the user can freely adjust, change and set each bread making process. Not only can you make bread, but you can also change the hardness, rise, etc. of the same bread, for example.
This has the effect that it is possible to make bread according to the user's preference with different degrees of baking, and it is possible to make a variety of breads.

[Brief explanation of the drawing]

Figure 1 is a front view of the display and operation panel of the automatic bread maker according to the present invention, Figure 2 is a schematic sectional view of the automatic bread maker, Figure 3 is a block diagram of the control device, and Figure 4 is the control circuit. Figures 5, 6, and 7 are flowcharts of the bread making process, with Figure 5 showing the process up to the start of kneading, Figure 6 showing the intermediate mode of operation, and Figure 7 showing the end mode. FIG. 8 is a front view of a display and operation panel of an automatic bread maker according to a second embodiment of the present invention. 21...Microcomputer, 22...Central processing unit, 23...Read-only memory, 24
...Reading memory. 35...Forward switch, 36
...Memory switch.

Claims (1)

[Scope of utility model registration request] For each bread-making process, an operator determines the end point of the process and sets the time required for the process based on an on signal of a switch operated at that time, and a series of settings set by the setting unit. 1. An automatic bread maker comprising: a storage means for storing the time of the process; and a reproduction means for performing sequence control according to the time of the process stored by the storage means.