JPH0710684Y2 - Automatic bread machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to an automatic bread maker.

2. Description of the Related Art A conventional automatic bread maker of this type, as shown in FIG.
If the motor 13 is overloaded, the temperature detector 14 built in the coil connected in series with the coil of the motor 13
However, the circuit was opened due to the temperature rise of the coil, and the power supply to the motor 13 was stopped. Further, when the coil temperature returns to the normal temperature, the circuit is automatically closed to energize the motor 13.

Therefore, in the case of such a structure, even if an overload is applied to the motor 13 by the blades and the rotation is stopped, the user does not know that it is a failure and the product is used as it is. Then, the satisfactory performance cannot be obtained, or the coil of the motor 13 is automatically restarted when cooled, so that there is a danger that the user suddenly rotates and the user's fingers are caught.

Means for Solving the ProblemsThe present invention has been made in order to eliminate the above-mentioned drawbacks, and an abnormal temperature detector is provided in series with a container switch or a container sensor to sound a buzzer at the time of abnormality and to display an abnormality on the display unit. A control circuit is provided to keep the same state until the start button is pressed without turning on the motor switch even if the temperature is displayed and returns to the normal temperature.

Action With the above-mentioned configuration, when an overload is applied to the motor by the blades and the temperature of the coil rises and the abnormal temperature detector detects it and opens the circuit, the case where the container switch or container sensor opens Similarly, a buzzer sounds by the control circuit and an abnormality is displayed on the display unit. Moreover, once this abnormal state occurs in the control circuit, it does not automatically recover even if it is cooled to a normal temperature. For this reason, the user can easily know the abnormality of the overload, and since there is no sudden return (rotation), there is no risk of pinching a finger in an investigation or the like.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3.

In the figure, reference numeral 1 is a main body in which a bread container 3 for storing bread dough is mounted. 2 is a blade and is the bread container 3
It is provided on the bottom and is rotationally driven by a motor 4 via a rotary shaft 5. 6 is a heater for heating the bread dough, which is attached to the lower portion of the bread container 3 with a space therebetween.
Reference numeral 8 denotes a control circuit including a microcomputer, which controls the motor 4 and the heater 6 for kneading and fermenting the bread dough, degassing and baking. Reference numeral 7 denotes a container switch which is closed when the bread container 3 is attached to the main body 1 and is opened when the bread container 3 is detached. The signal is also sent to the control circuit 8. An abnormal temperature detector 9 is provided in close contact with the coil portion of the motor 4 and detects a rise in temperature of the motor 4 such as when the rotation of the motor 4 is restricted. A signal is sent to the control circuit 8, whereby the drive signal to the motor switch 10 of the motor 4 is stopped, the motor 4 is de-energized, and the temperature rise of the motor 4 is stopped. Further, when the temperature of the motor 4 decreases, the abnormal temperature detector 9 closes. Reference numeral 11 denotes a container sensor which is provided inside the main body 1 in contact with the lower portion of the bread container 3 to detect the temperature of the bread dough and sends a signal to the control circuit 8. Reference numeral 17 denotes a motor drive circuit, which is composed of a series circuit of the motor 4 and the motor switch 10 and is connected to the control circuit 8. Reference numeral 16 is an abnormal temperature detection circuit, which is composed of a container switch 7 or a series circuit of a container sensor 11 and an abnormal temperature detector 9, and is connected to the control circuit 8. The motor drive circuit 17 and the abnormal temperature detection circuit 16 are separately connected to the control circuit 8. A display unit 10 displays cooking time or an abnormal state and is connected to the control circuit 8. Reference numeral 19 is a buzzer which is used for warning of the completion of cooking or an alarm, and is connected to the control circuit 8. A start button 12 sends a cooking start signal to the control circuit 8.

Next, the operation of the above configuration will be described with reference to FIGS. When the ingredients for bread dough are put into the bread container 3, this is put on the main body 1, the power source 20 is turned on, and the start button is turned on, the control circuit 8 starts control. A motor drive signal is output from the control circuit 8, the motor switch 10 of the motor drive circuit 16 is turned on, the motor 4 is driven for a predetermined time (T), the dough kneading process is performed, and then the fermentation is sequentially performed.
Degassing and baking are performed and delicious bread is automatically prepared. During the process of kneading, etc., when the motor 4 is rotating, if the rotating shaft 5 is overloaded due to factors such as bread dough and the rotation of the motor 4 is stopped or slowed down, the temperature of the motor 4 rises and preset. When the temperature exceeds the specified temperature, the abnormal temperature detector 9 attached to the motor 4 detects it and opens the circuit. This detection signal is input to the control circuit 8 and the motor drive signal is no longer output from the control circuit 8, and the motor switch 10 of the motor drive circuit 17 remains open, and the energization of the motor 4 is stopped and the container switch 7 is opened. Similar to the case described above, an abnormal display (not shown) is displayed on the display unit 18, and the buzzer 19 is sounded to warn the user of the abnormality. In these abnormal states, even if the temperature of the motor 4 drops and the abnormal temperature detector 9 is closed, the motor switch
Until the start button 12 is pressed without turning on 10, the same state is maintained and it does not restart automatically. When the cause of the abnormality is eliminated, the control button 8 is initialized by pressing the start button 12, and the abnormality display and the buzzer are stopped and the system is restarted normally.

In the case of a series circuit of the container sensor 11 and the abnormal temperature detector 9, when the bread dough temperature abnormally rises and the container sensor 11 detects a predetermined abnormal temperature and inputs the signal to the control circuit 8, the control circuit 8 With the output of, the same operation as when the abnormal temperature detector 9 is activated is performed.

As described above, according to the present invention, an abnormal temperature detector is provided in series with the container switch or container sensor separately from the motor drive circuit, so that the motor and heater can be energized in the event of an abnormality. In addition to stopping, abnormal display and notification can be done through the control circuit, the user can quickly and accurately know the failure of the motor, and easily know the cause of poor product performance such as finished bread. Since it is possible to clarify the misuse of the material in terms of the quality and quantity of the material for the user, it will be easy to use, and the motor will automatically operate even if the abnormal temperature detector reaches the normal temperature and is closed. Since the blades rotate and the blades do not rotate, there is less risk of the user accidentally pinching a finger, and an extremely easy-to-use automatic bread maker can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view of an automatic bread maker showing an embodiment of the present invention, FIG. 2 is a flowchart of the control circuit, FIG. 3 is an electric circuit diagram of the same, and FIG. 4 is a conventional automatic bread maker. It is an electric circuit diagram of the machine. 1 ... Main body, 2 ... Blade, 3 ... Pan container, 4 ... Motor, 6 ... Heater, 7 ... Container switch, 8 ... Control circuit, 9 ... Abnormal temperature detector, 10 ... Motor Switch, 11 …… Container sensor, 12 …… Start button, 16…
… Abnormal temperature detection circuit, 17 …… Motor drive circuit, 18 ……
Display, 19 …… Buzzer, 20 …… Power supply.

Claims (1)

[Scope of utility model registration request] 1. A bread container (3) for storing bread dough in a main body (1), a heater (6) for heating the bread dough, a blade (2) for kneading the bread dough, and a motor (1) for rotating the blade (2). 4), the motor (4) and the heater (6)
Abnormal temperature detection that opens a circuit when a preset abnormal temperature is detected in an automatic bread machine that has a control circuit (8) for controlling the bread dough and automatically performs the kneading, fermentation, degassing and baking of bread dough. Install the device (9) on the motor (4),
The abnormal temperature detector (9) is a container switch (7) that is closed by mounting the bread container (3) in a circuit different from the motor drive circuit (17) that drives the motor (4), or a container sensor that detects the temperature of the dough. The control circuit (8) is provided in series with (11), and further, the control circuit (8) is provided with a display section (18) for displaying an abnormality by a detection signal of the abnormal temperature detector (9) and a buzzer (19) for giving an alarm. The automatic bread machine is characterized in that it does not automatically recover even when it returns to a normal temperature, and the same state is maintained until the start button (12) is pressed.