JP3023639B2 - 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 In recent years, even in ordinary households, Japanese Patent Application Laid-Open No. 63-158
Baking is easily performed with an automatic bread maker as disclosed in Japanese Patent No. 026.

FIG. 6 shows a conventional automatic bread maker.
This will be described with reference to FIG.

FIG. 6 is a partially sectional side view of an automatic bread maker. In FIG. 6, 1 is a firing chamber, 2 is a heater, 3
Is a bread baking mold detachably mounted, 4 is a motor, 5
Is a belt for transmitting the power of the motor 4 and 6 is a motor 4
The baking blades driven by the baking pan 7 are in contact with the outer surface of the baking pan 3 to detect the temperature of the baking pan 3 for process determination and temperature control, 8 is a lid, and 9 is all control of the baking pan. Control device that performs
, A display unit for displaying the state of the control device 9, and 12 a yeast container.

In an automatic bread maker having such a configuration,
As shown in the cooking process diagram of FIG. 7, in the kneading process after the start, after a certain kneading time t1 has elapsed, the temperature detected by the bread baking type temperature detector 7 in order to suppress the temperature rise of the dough. The kneading is stopped when the temperature becomes equal to or higher than the constant temperature θ1, whereby the kneading time is shortened when the room temperature is high, and the kneading time is lengthened when the room temperature is low. When the kneading time reaches t2, kneading is stopped even if the temperature has not reached θ1, which is equal to the power supply frequency of 5%.
It was the same regardless of 0 Hz and 60 Hz, and the power supply to the motor was full power supply.

[0006]

However, in such a method, when the power supply frequency is 60 Hz, the output of the motor is larger than at 50 Hz, so that the temperature of the bread dough rises quickly, and as a result, the kneading time is shortened. However, there is a problem that a difference occurs in the finished bread.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is an object of the present invention to reduce the half cycle of an alternating current to be supplied to a motor at a constant rate so that no difference occurs in the finished bread. I have.

[0008]

The present invention SUMMARY OF] is in <br/> the SUMMARY, the baking chamber having a heater, a bread-type which can be detachably attached to said firing chamber, the inner bottom portion of the bread-type , A dough blade driven by a motor, a baking type temperature detector in the vicinity of the baking type, for detecting the temperature thereof, and performing a baking control by detecting the temperature with the baking type temperature detector. With a control device,
The control device has a power supply frequency detection circuit. When the detected power supply frequency is 50 Hz, the power supply to the motor is set to full power supply, and when the detected power supply frequency is 60 Hz, the half cycle of the AC power supply to the motor is reduced to six times. A thinning-out temperature detector is provided in addition to thinning out in the range of 1 to 10 times.
However, the temperature from the baking type temperature detector
When it goes up, the half cycle of the alternating current
In this case , thinning is performed in a range from once every three times to once every ten times .

[0009]

As another means for solving the problem , a heater
And a firing chamber having a
A roasted baking mold, provided on the inner bottom of the baking mold.
And the dough impeller driven by a motor
Bread mold temperature that is near the mold and detects its temperature
Temperature detector and the baking type temperature detector
And a control device for controlling the baking of the bread.
The device has a power frequency detection circuit, and detects the detected power frequency.
When the number is 50 Hz, the power to the motor is
When the frequency is 60 Hz, the AC
Thinning out the half cycle from once in six to once in ten
In addition , it has a room temperature detector, and when the temperature from the room temperature detector exceeds a certain temperature, the half cycle of the alternating current to energize the motor ranges from once every three times to once every ten times. It is intended to be thinned out.

As another means for solving the problem , a heater
And a firing chamber having a
A roasted baking mold, provided on the inner bottom of the baking mold.
And the dough impeller driven by a motor
Bread mold temperature that is near the mold and detects its temperature
Temperature detector and the baking type temperature detector
And a control device for controlling the baking of the bread.
The device has a power frequency detection circuit, and detects the detected power frequency.
When the number is 50 Hz, the power to the motor is
When the frequency is 60 Hz, the AC
Thinning out the half cycle from once in six to once in ten
In addition, a power supply voltage detecting circuit is further provided , and the half cycle of the alternating current to be supplied to the motor is thinned out in the range of once every six times to once every ten times in accordance with the detected power supply voltage.

[0012]

DETAILED DESCRIPTION OF THE INVENTION The present invention in SUMMARY, detects the power supply frequency by a power supply frequency detecting circuit, if the total power energizing current to the motor in the case of 50 Hz, in the case of 60Hz the half cycle of the AC energizing the motor Apply electricity at a fixed rate and thin the bread with a baking type temperature sensor.
Mold temperature is detected, and when the temperature exceeds a certain
Thins out the AC half-cycle at a fixed rate
By applying electricity , the kneading characteristics are adjusted.

[0013]

In another means for solving the problems , a power supply
The power supply frequency is detected by the frequency detection circuit.
Hz, the energization of the motor is assumed to be full power energization,
In the case of Hz, the half cycle of AC
The kneading characteristics are adjusted by energizing the thinning at a constant rate , further detecting the room temperature by the room temperature detector, and energizing the half cycle of the alternating current to energize the motor at a constant rate when the temperature exceeds a certain temperature.

In another means for solving the problems , a power supply
The power supply frequency is detected by the frequency detection circuit.
Hz, the energization of the motor is assumed to be full power energization,
In the case of Hz, the half cycle of AC
The kneading characteristics are adjusted by applying a thinning-out current at a constant rate , further detecting a power supply voltage by a power supply voltage detection circuit , and performing a thinning-out current at a constant rate for a half cycle of an alternating current to be applied to the motor according to the detected power supply voltage. Things.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG.

The structure of the main body is the same as that shown in FIG.
Therefore, the same components are denoted by the same reference numerals and the description thereof is omitted.

In the circuit diagram of FIG. 1, the heater 2, motor 4, bread-baking-type temperature detector 7, and control device 9 correspond to the members having the same numbers in FIG. The heater 2 is on / off controlled by a relay 14 controlled by a heater control circuit 13, and the motor 4 is controlled by zero-cross switching by a triac 16 controlled by a motor control circuit 15.

The microcomputer 17 receives signals from the power supply frequency detection circuit 18, the power supply voltage detection circuit 19, the room temperature detection circuit 20, and the baking type temperature detection circuit 21 through the heater control circuit 13 and the motor control circuit 15 to control the heater 2 and motor 4. To control the bread making process. Reference numeral 22 denotes a room temperature detector for detecting a room temperature.

The operation of the above configuration will be described. First, immediately after cooking is started, the power supply frequency is detected by the power supply frequency detection circuit 18 shown in the circuit diagram of FIG.
It is determined whether it is z or 60 Hz.

If the frequency is 50 Hz, in the kneading process, the voltage applied to the motor 4 is set to the full power supply as usual as shown in FIG.

If the frequency is 60 Hz, the triac 1 for controlling the motor 4 is used in the kneading step and the gas releasing step.
6 is controlled so that the half cycle of the alternating current shown in FIG. 3 is turned off once every seven times.

Thus, the motor 4 at 60 Hz
Can be matched with the case of 50 Hz, and the finished bread can be equally good.

In this embodiment, the thinning rate is set to 1/7. However, the thinning rate can be selected in the range of 1/6 to 1/10 depending on the characteristics of the motor. A sufficient effect can be expected even if an intermittent operation of ON / OFF is performed for the first few minutes and then energization of the thinning is performed instead of performing the thinning. Further, this thinning energization can also be used in the degassing step.

Further, when the room temperature is low, the kneading step is carried out with the entire power supply from the beginning to the end as in the conventional case, and a sufficient kneading time can be taken.

When the room temperature is high, if the temperature of the dough rises in the kneading process, the temperature in the subsequent fermentation process will increase and the quality of the finished product will deteriorate. When the temperature is detected by the temperature detecting circuit 15 and reaches a temperature θ2 lower than θ1 described in FIG. 7 of the conventional example, a half cycle of the alternating current as shown in FIG.
It is a thinning energization that is turned off at the rate of the number of times.

As a result, the bread baking mold temperature reaches θ1 in a shorter time if full power is supplied, and the kneading time is not sufficient, and the bread is insufficiently kneaded. This makes it possible to increase the kneading time without increasing the temperature of the dough, so that good bread can be obtained.

In this embodiment, the thinning rate is set to 1/5, but the thinning rate is selected in the range of 1/3 to 1/10 depending on the characteristics of the motor.

Also, when the room temperature is high and flour or water as a cooking material is cooled in a refrigerator, the thinning current is applied to prevent the dough temperature in the fermentation process from rising too much. In this case, the temperature α from the room temperature detector 22 is set so that the thinning rate becomes lower when the room temperature is high.

That is, the voltage applied to the motor in the kneading process shown in FIG. 7 is changed according to the room temperature detected at the start of kneading.
When the room temperature α ≧ 30 ° C., the thinning current of 1/5 of FIG.
When 7 ° C. ≦ α <30 ° C., 1/7 of FIG.
When α <27 ° C., the entire power is supplied as shown in FIG.

Thus, after the kneading is completed even when cold water is used when the room temperature is high, the fermentation temperature does not become too high due to the high room temperature, and the bread which is not sufficiently finished due to overfermentation is prevented. It is.

Also in this embodiment, the thinning rate is set to 1/5 or 1 /
7, but 1/3 to 1 depending on motor characteristics
/ 10.

In the continuous kneading process shown in FIG. 5, the thinning rate is further increased when the baking mold temperature reaches θ2 after the thinning current is applied at room temperature in the continuous kneading process shown in FIG. Temperature θ2 at which thinning takes place
The same effect can be obtained by changing the temperature at room temperature.

Immediately after the start of cooking, the power supply voltage is detected by the power supply voltage detection circuit 19 in FIG. 1 and the voltage applied to the motor in the kneading process in FIG. 7 is changed according to the detected power supply voltage. When the voltage is 107 V or more, 1/7 of FIG. 3 is thinned, and when the voltage is 93 V to 107 V, 1/9.
When the voltage is 93 V or less, the entire power is supplied as shown in FIG.

As a result, when the power supply voltage is high, the thinning rate becomes large, and when the power supply voltage is low, the thinning rate becomes small, so that the torque of the motor 4 changes due to the fluctuation of the power supply voltage, so that there is no difference in the finished pan.

The above-described setting of the thinning rate based on the power supply frequency, the baking temperature, the room temperature, and the power supply voltage can be arbitrarily combined, and the effect can be further enhanced by the combination.

[0037]

As is apparent from the above description, according to the present invention, the difference in the power supply frequency is reduced by thinning out the voltage applied to the motor at a constant rate, so that the difference in the pan quality is caused by the difference in the power supply frequency. It does not occur, and a uniform finish can be realized.

Further, by detecting the temperature of the baking mold and thinning out the voltage applied to the motor at a constant rate according to the detected temperature, a longer kneading time can be secured without raising the dough temperature, and even when the room temperature is high, the process is completed. Bread that is better in condition can be made.

Further, even when the temperature of the bread baking mold is low by using cold water when the room temperature is high, the temperature rise of the bread dough after the kneading process is reduced by energizing the thinning according to the room temperature, and the finish is good. You can make the perfect bread.

Also, by detecting the power supply voltage, the voltage applied to the motor when the voltage is high is thinned out at a constant rate, so that the temperature rise of the bread dough is reduced and the kneading time is lengthened, so that the power supply voltage is reduced. This makes it possible to make a good bread by eliminating the difference in the finished product.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of an automatic bread maker according to an embodiment of the present invention.

FIG. 2 is a diagram showing a waveform of a voltage applied to a motor when all electric power is supplied.

FIG. 3 is a diagram showing a waveform of a voltage applied to a motor when 1/7 thinning is applied.

FIG. 4 is a diagram showing a waveform of a voltage applied to a motor when 1/5 thinning is applied.

Fig. 5: Cooking process diagram

FIG. 6 is a side sectional view of a part of the automatic bread maker.

FIG. 7 is a diagram showing a conventional cooking process.

[Explanation of symbols]

 2 Heater 4 Motor 7 Bread type temperature detector 9 Controller 18 Power frequency detection circuit 19 Power supply voltage detection circuit 22 Room temperature detector

Claims (3)

(57) [Claims] 1. A baking chamber having a heater, a baking mold removably mountable in the baking chamber, a kneading blade provided on an inner bottom of the baking mold and driven by a motor, and a vicinity of the baking mold. In, there is provided a baking type temperature detector for detecting the temperature, and a control device for performing baking control by detecting the temperature by the baking type temperature detector, the control device has a power supply frequency detection circuit, When the detected power supply frequency is 50 Hz, energization of the motor is set to full power energization, and when the detected power supply frequency is 60 Hz, the half cycle of alternating current energizing the motor is changed from once every six times to once every ten times.
Thinning out in a range of times and baking type temperature detector
When the temperature from the
The half cycle of the alternating current to be energized is changed from once every three times to once every ten times.
An automatic bread maker that thins out the area . 2. A firing chamber having a heater, and said firing chamber.
Bread mold that can be detachably attached to
Dough that is provided on the inner bottom of the car and driven by a motor
Detect the temperature near the root and the baking mold
Baked mold temperature detector and this baked mold temperature detector
And a control device that controls the baking by detecting the temperature with a heater
The control device has a power supply frequency detection circuit,
If the known power frequency is 50Hz, go to the motor
Energization of all power, the motor at 60Hz
The half cycle of the alternating current to energize the
In a range of times and have a room temperature detector.
Then, according to the temperature from the room temperature detector, it passes through the motor.
The half cycle of the alternating current to be applied is in the range of once every three to once every ten times.
An automatic bread maker that thins out the area . 3. A firing chamber having a heater, and said firing chamber.
Bread mold that can be detachably attached to
Dough that is provided on the inner bottom of the car and driven by a motor
Detect the temperature near the root and the baking mold
Baked mold temperature detector and this baked mold temperature detector
And a control device that controls the baking by detecting the temperature with a heater
The control device has a power supply frequency detection circuit,
If the known power frequency is 50Hz, go to the motor
Energization of all power, the motor at 60Hz
The half cycle of the alternating current to energize the
And a power supply voltage detection circuit
And energizes the motor according to the detected power supply voltage .
The half cycle of the exchange is in the range of once every six times to once every ten times
An automatic bread maker that thins out .