JPS6142382Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a high-frequency heating device equipped with a kneader used for fermentation cooking of bread.

Conventionally, in the case of this type of high-frequency heating device, such as a microwave oven, a kneader is installed in the heating chamber, bread dough is stored in the kneader, and the dough is kneaded and heated with a low output of the heater. By doing so, bread can be fermented and cooked.
However, in such microwave ovens, the cook has to switch between the kneading operation and the heating operation and set the operation time each time, which is not only very troublesome but also depends on the cook. Things will be very different. Moreover, it is difficult for inexperienced cooks to reliably judge the progress of cooking, which can sometimes lead to cooking failures.

This idea was devised in view of the above circumstances, and its purpose is to be able to automatically set the kneading and heating operations, while also maintaining the operating times in an optimal state. It is an object of the present invention to provide a high-frequency heating device which is capable of easily and reliably determining the progress of fermentation heating operation, and which is convenient and can improve reliability.

An embodiment of this invention will be described below with reference to the drawings. In Figures 1 and 2, 1
1 is a main body of a microwave oven, and a door 2 is pivotally supported on the front surface so as to be openable and closable, and an operation panel 3 is provided. A heating chamber, that is, a cooking chamber 4 is provided in the main body 1 corresponding to the door 2. One end of a waveguide 5 is communicated with the ceiling surface of the cooking chamber 4, and a high frequency generator such as a magnetron 6 is provided around the other end of the waveguide 5. Here, the antenna ₆₁ of the magnetron 6 is connected to the waveguide 5
has been introduced within. Furthermore, an upper heater (output 800 W) 7 is disposed in the upper part of the cooking chamber 4, and an upper heater (output 400 W) 8 is disposed inside the upper heater 7. In addition, cooking room 4
A lower heater (output 400W) 9 is disposed in the lower part of the chamber. Further, on the back side of the bottom of the cooking chamber 4, a kneader 20 (and a rotating shelf board 3), which will be described later, is provided.
0) is provided, and the rotating shaft ₁₀₁ of this motor 10 penetrates the bottom surface of the cooking chamber 4 and is introduced into the cooking chamber 4. In addition, mounting holes 4 ₁ , 4 ₁ for mounting a kneader 20 (described later) are formed on the bottom surface of the cooking chamber 4, and a shelf board for rotatably supporting a rotary shelf board 30 (described later) is formed. Receiving rollers 15, 15 are provided.

In the cooking chamber 4, a kneader 20 used for fermentation of bread can be appropriately installed. This kneader 20 is formed, for example, in the shape of a flower pot, and has fixing pieces 2 inserted into mounting holes 4 ₁ , 4 ₁ in the bottom of the cooking chamber 4 at its lower part.
0 ₁ and 20 ₁ are formed. A spatula 21 for mixing and kneading bread dough, for example, is provided at the inner bottom of the kneading device 20, and the rotation receiving portion ₂₁₁ of this spatula 21 is connected to the bottom surface of the kneading device 20 and the cooking chamber 4.
It is designed to penetrate the bottom of the. in this case,
The rotation shaft ₁₀₁ of the motor 10 is adapted to engage inside the rotation receiving portion ₂₁₁ . Further, fixing claws 20 ₂ are provided at predetermined locations on the fixing piece 20 ₁ .
is formed, and when the kneader 20 is inserted into the bottom of the cooking chamber 4 and rotated by a predetermined angle, the claws ₂₀₂ catch on the back side of the bottom of the cooking chamber 4, and the kneader 20 is moved against the cooking chamber 4. This allows for secure installation. When the kneader 20 is securely installed in the cooking chamber 4, the claws ₂₀₂ come into contact with the actuator of the micro switch 25 provided on the back side of the bottom of the cooking chamber 4, and the micro switch 25 is turned on. It's getting old. Note that the opening of the kneader 20 can be closed with a lid ₂₀₃ .

Further, as shown in FIG. 3, a rotary shelf board 30 can be installed in the cooking chamber 4 as appropriate.
In this case, a rotation receiving part ₃₀₁ formed on the back side of the rotating shelf board 30 passes through the bottom surface of the cooking chamber 4, and the rotation shaft ₁₀₁ of the motor 10 is installed inside the rotation receiving part ₃₀₁ . is engaged. Furthermore, the back side of the peripheral edge of the rotating shelf board 30 is connected to the shelf board receiving roller 1.
5 and 15 so as to be rotatable.

On the other hand, the operation panel 3 includes a cooking function switch 41, a temperature controller 42, a pilot lamp 43 for displaying whether the kneader 20 is installed in the cooking chamber 4, and a pilot lamp 43 for controlling the cooking time. A short-time timer (maximum 15 minutes) 44, a long-term timer (maximum 120 minutes) 45, a cooking switch 46, and a pilot lamp 47 for displaying whether or not cooking is being performed are sequentially provided from the upper part to the lower part. It is being Here, FIG. 4 shows the configuration and display contents on the operation panel 3 in detail. That is, the cooking function changeover switch 41 is
The magnetron 6
And the operations of the heaters 7, 8, and 9 are selected as appropriate. The temperature controller 42
The temperature inside the cooking chamber during oven cooking can be adjusted as shown in the figure, and the operation of the heaters 7, 8, and 9 can be appropriately selected depending on the setting state. In this case, the lowest scale of the temperature controller 42 corresponds to "fermented cooking", the middle scale corresponds to "oven cooking", and the highest scale corresponds to "grill cooking". The long-time timer 45 has a display section on which a bread making procedure (automatic course) Y is written corresponding to the time scale X,
The cooking time is controlled according to the setting state, and when the kneader 20 is installed in the cooking chamber 4, the fermentation cooking heater (upper heater 8) is The drive of the motor 10 is selectively controlled. In this case, bread making procedure Y is 120 minutes to 100 minutes.
Kneading operation "Knead" for minutes, primary fermentation operation "Fermentation 1" for 100 minutes to 40 minutes, kneading operation "Knead" for 40 minutes to 37 minutes, and secondary fermentation operation "Knead" for 37 minutes to 0 minutes (off). It's more like "Fermentation 2".

FIG. 5 shows the control circuit. The pilot lamp 4 is connected to the AC power source 50 through a fuse 51 and the micro switch (normally open type) 25 in series.
3 is connected to the lamp 43, and a relay 52 is connected in parallel to this lamp 43. Furthermore, the power supply 50 includes
An interior light 53 is connected to the fuse 51 and the normally open contact of the timer switch 44 ₁ of the short-time timer 44 in parallel with the timer switch 45 ₁ of the long-term timer 45 . The interior light 53 illuminates the interior of the cooking chamber 4.
Further, a relay 54 is connected to the power supply 50 via the fuse 51, the normally closed contacts of the timer switch ₄₅₁ and the timer switch ₄₄₁ in series. Furthermore, the power supply 50 includes the fuse 5
1. A normally open side contact of the timer switch 44 ₁ is connected to the timer switch 45 ₁ in parallel, and a short switch 56 is connected through the door switch 55 . This short switch 56 is interlocked with the door switch 56 at a predetermined timing, and is intended to ensure safety in the event of a failure of the door switch 56.

One end of a relay 57 is connected to the connection point between the door switch 55 and the shutter switch 56 via the cooking switch 46.
The other end of 7 is connected to the other end of power supply 50 . A normally open contact _57a1 of this relay 57 is connected in parallel to the door switch 46, so that a self-holding circuit for the relay 57 can be formed. Further, the movable contact of the switching contact 541 of the relay 54 is connected to the connection point between the door switch 55 and the shutter switch 56 through a normally open contact _57a2 of the relay 57 and a magnetron thermoswitch ₅₈ in series. One end of the timer motor 44M of the short time timer 44 is connected via the normally closed contact of the switching contact ₅₄₁ , and the other end of the timer motor 44M is connected to the other end of the power source 50. _Furthermore , the timer motor 45M of the long time timer 45 is
One end of the timer motor 45M is connected to the other end of the timer motor 45M, and the other end of the timer motor 45M is connected to the other end of the power source 50. Further, one end of the pilot lamp 47 is connected to the connection point between the thermoswitch 58 and the switching contact ₅₄₁ , and the other end of this lamp 47 is connected to the other end of the power source 50. Here, the normally open contact 52a of the relay 52 is connected in parallel to the contact _57a2 .

Furthermore, the lamp 47 is connected to the relay 52.
1 of the transformer 62 via the normally closed side contact of the switching contact 52 ₁ , the switching switch 60 that responds to the cooking function switching switch 41, and the defrosting switch 61.
The next winding ₆₂₁ is connected. This transformer 6
The anode and cathode of the magnetron 6 are connected to the secondary winding ₆₂ of the transformer 62 through a rectifier circuit consisting of a capacitor C and a diode D, and the heater of the magnetron 6 is connected to the secondary winding of the transformer 62. 62 ₃ is connected. The anode is grounded. Here, the defrosting switch 61
The on-off operation is repeated at regular intervals depending on the operation of the motor 10, for example.
A series body of a switch 63 responsive to the cooking function changeover switch 41 and a timer switch ₄₄₂ of the short time timer 44 is connected in parallel to the defrosting switch 61. One end of a blower motor 64 is connected to the connection point between the changeover switch 60 and the defrosting switch 61, and the other end of the blower motor 64 is connected to the other end of the lamp 47. This blower motor 64 drives a fan (not shown) for sending cooling air to the magnetron 6.

Further, at one end of the lamp 47, the switching contact 52 is connected.
One end of the upper heater 7 is connected to the normally closed side contact of ₁ , a changeover switch 60, a thermoswitch 70, and an upper heater turn-on switch 71, and the other end of the upper heater 7 is connected to the other end of the lamp 47. ing. Here, the thermo switch 70 responds to the temperature inside the cooking chamber 4, and the thermo switch 70 responds to the temperature inside the cooking chamber 4.
The operating point is made variable according to the setting position of 2. In addition, the upper heater input switch 71 is
It responds to the set position of the temperature regulator 42. And thermo switch 70 and switch 71
One end of each of the upper heater 8 and the lower heater 9 is connected to the connection point with the upper/lower heater changeover switch 72, and the other ends of the heaters 8 and 9 are both connected to the other end of the lamp 47. There is. The upper/lower heater changeover switch 72 is connected to the temperature controller 4
It responds to the setting position of 2. Further, at one end of the lamp 47 is a switching contact 5 of the relay 52.
One _end of the motor 10 is connected through a normally closed contact 522 of the motor 10, and the other end of the motor 10 is connected to the other end of the lamp 47 through a capacitor 80 and a switching contact ₅₂₃ of the relay 52. Here, the motor 10 is equipped with a main winding m and an auxiliary winding a as shown in FIG. 6, and rotates at high speed (200 rpm) by the action of the capacitor 80 based on the switching state of the switching contact ₅₂₃ . pm to 400r.pm) or low speed rotation (8r.pm to 15r.pm). In this case, when the switching contact ₅₂₃ is actuated, the motor 10
becomes a high-speed rotation. Further, the movable contact 90C of the timer switch 90 of the long time timer 45 is connected to the normally open fixed contact of the switching contact ₅₂₁ . This timer switch 90 is
The movable contact 90C and the fixed contact 90 are connected only for 20 minutes from 120 minutes to 100 minutes and for 3 minutes from 40 minutes to 37 minutes, that is, the period corresponding to "knead" in bread making procedure Y.
₂ is closed, and in other periods, the movable contact 9
The connection between 0C and the fixed contact ₉₀₁ is closed. Therefore, the fixed contact 9 of the timer switch 90
0 ₂ is connected to the normally open side contact of the switching contact 52 ₂ . In addition, the fixed contact 9 of the timer switch 90
0 ₁ is the changeover switch 60 and thermo switch 70
connected to the connection point.

Next, the operation in the above configuration will be explained. First, zero-stage fermented bread dough, milk at about 40°C, sugar, eggs, flour, salt, water, etc. are put into a kneader 20. Then, this kneader 20 is installed in the cooking chamber 4. At this time, if the kneader 20 is securely attached, the micro switch 25 is turned on, the pilot lamp 43 is lit, and
Relay 52 operates. Here, due to the closing of the contact 52a based on the operation of the relay 52, the start and stop of cooking depend on the opening/closing operation of the door 2. Furthermore, the cooking function switch 41 is set to "grill/oven cooking" and the temperature cooking chamber 4 is set to "grill/oven cooking".
Set 2 to "Fermentation". Also, long time timer 4
Set 5 to the 120 minute to 100 minute position, that is, "knead". In this way, when the preparation for cooking is completed, the door 2 is closed. Then, the timer motor 45M
operates, and the pilot lamp 47 lights up. Furthermore, the motor 10 rotates at high speed by the operation of the switching contacts 52 ₁ , 52 ₂ , 52 ₃ based on the operation of the relay 52, and the bread dough and various ingredients in the kneader 20 are mixed and kneaded.

After that, when the timer 45 reaches the 100 minute position, corresponding to "fermentation 1", the movable contact 90C of the timer switch 90 and the fixed contact ₉₀₁
The relationship between the two is closed. At this time, the upper heater 8 has already been selected by operating the temperature regulator 42, and the upper heater 8 is operated in accordance with the switching operation of the timer switch 90. In this way, the dough in the kneader 20 is heated by the heat generation action of the upper heater 8, and the dough undergoes primary fermentation. In this case, the operating point of the thermoswitch 70 is set to approximately 38°C by operating the temperature regulator 42, and thereby the temperature within the cooking chamber 4 is maintained at approximately 38°C.

Then, when the timer 45 reaches the 40 minute position, that is, when it corresponds to "kneading", the movable contact 90C and the fixed contact ₉₀₂ of the timer switch 90 are closed, and the motor 10 is operated. thus,
The dough in the kneader 20 is mixed and kneaded again, and the dough is degassed. In this case, it is also possible to open the door 2, stop the operation of the motor 10, and add water, eggs, etc. into the kneader 20.

Further, when the timer 45 reaches the 37 minute position, that is, when the time is "fermentation 2", the movable contact 90C and the fixed contact ₉₀₁ of the timer switch 90 are closed, and the upper heater 8 is activated to make dough. Secondary fermentation is carried out. And timer 45 is 0
The timer switch 4 corresponds to the minute (off) position.
5 ₁ is opened and fermentation cooking ends.

Therefore, the operation of the motor 10 and the operation of the upper heater 8 can be automatically switched, and the operation time can be maintained in an optimum state, which is very convenient. Moreover, since the progress of cooking is displayed along with the time display of the long timer, it is possible for inexperienced cooks to judge in advance the time to add flour or water to the dough in the kneader 20. However, it becomes possible to ferment bread without failure. Furthermore, the speed of the motor 10 is changed according to the attachment and detachment of the kneading device 20, so that normal "cooking/reheating", "defrosting/egg cooking", "stewing cooking", "grilling/oven cooking", etc. Appropriate cooking can be done without adversely affecting the food.

It should be noted that this invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without changing the gist.

As described above, according to this invention, the driving motor of the kneading machine and the heater for fermentation heating are selectively driven and controlled by the long-term timer at each set time, and the time scale of the long-term timer is Since we have written a bread-making procedure corresponding to It is possible to provide a high-frequency heating device that can easily and reliably determine the above conditions, is convenient, and can improve reliability.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
The figure is an overall configuration diagram, Figure 2 is a configuration diagram of the internal mechanism and kneading machine, Figure 3 is a configuration diagram of the internal mechanism and rotating shelf, and Figure 4 shows the detailed configuration and display contents on the operation panel. FIG. 5 is a block diagram of the control circuit, and FIG. 6 is a diagram showing the structure of the windings of the drive motor of the kneader and its peripheral circuits. 4... Heating chamber (cooking chamber), 6... High frequency generator (magnetron), 7, 8... Upper heater, 9...
...Lower heater, 10...Kneader drive motor, 2
0...Knead machine, 45...Long time timer, X...Time scale, Y...Bread making procedure.

Claims (1)

[Scope of utility model registration request] a heating chamber, a high-frequency generator that supplies high-frequency waves into the heating chamber, a heater provided within the heating chamber, a rotary shelf plate that is detachable within the heating chamber, and a kneader that is detachable within the heating chamber; It has a drive motor that drives these rotary shelves and the kneading device, a detection means that detects whether the kneading device is attached or removed, and a display section on which bread-making procedures are written in accordance with a time scale,
means for selectively switching energization to the heater and energization to the drive motor as time elapses when the kneader is attached; and means for switching the speed of the drive motor in accordance with the detection result of the detection means. A high frequency heating device characterized by: