JP2599215B2 - Cooker - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a heating cooker such as an oven toaster capable of adjusting the heat power in a plurality of stages.

[Prior Art] For example, a thermal power control structure conventionally proposed in an oven toaster or the like switches the wattage of a heater, and is configured as shown in FIG. 12, for example.

That is, the power supply indicated by 81 in FIG.
And a series circuit of a heater 83 and a second switch 84, and a diode 85 is connected to the first switch 82 in parallel. The heater 83 is connected in parallel with another heater 86 and a series circuit of a common terminal 87a of the changeover switch 87 and a first changeover terminal 87b. The second switch terminal 87 c of the switch 87 is connected to the power supply 81. The heater 8
One of 3, 86 is arranged at the upper part of the heating chamber, and the other is arranged at the lower part of the heating chamber.

In such a circuit configuration, the first switch 82
Common terminal 87 of the second switch 84 and the changeover switch 87
a and the first switching terminal 87b are turned on, and the common terminal 87a and the second switching terminal 87c of the changeover switch 87 are turned off, the heaters 83 and 86 are energized in parallel. The power mode is set.

Further, the second switch 84, the common terminal 87a and the first switching terminal 87b of the changeover switch 87 are turned on, respectively, and the first switch 82 and the common terminal 87a and the second changeover terminal 87c of the changeover switch 87 are turned off. Then, since the diode 85 is connected in series to the parallel circuit of the heaters 83 and 86, the heating mode is “medium fire”.

Further, the common terminal 87a and the first switch terminal 87b of the switch 87 are turned off, and the first switch 82 is turned off.
And the common terminal 87a of the changeover switch 87 and the second changeover terminal 8
When each of the heaters 7c and 7c is turned on, the heaters 83 and 86 are connected in series and energized, so that the heating mode is "low heat".

[Problems to be Solved by the Invention] However, conventionally, in order to perform thermal power control, the diode 85 and the three switches 82, 84, 87 are required as described above, so that the number of parts is large and the configuration is complicated. There was a problem. In addition, conventionally, in any thermal mode,
Since cooking is performed in accordance with the amount of electric power fixed for each mode, the lower the heat power, the more time is required for the temperature in the heating chamber to rise to the set temperature range in the mode. Therefore, there has been a problem that the cooking time is long and the power consumption is large accordingly.

In the low heat mode, it is conceivable to raise the temperature of the heating chamber to the set temperature range in a short time by continuously energizing the heater from the start of energization. As a result, there is a problem that an object to be cooked with low heat is exposed to high heat and adversely affects the object to be processed.

It is an object of the present invention to be able to adjust the heating power in multiple stages with a simple configuration without using many parts,
Heating that can prevent high heating power when cooking with low heating power, raise the temperature in the cooking chamber to the set temperature range in a short time, shorten cooking time and reduce power consumption The idea is to get a cooker.

[Means for Solving the Problems] In order to achieve the above object, in the heating cooker of the present invention, the ratio between the heater provided in the heating chamber and the energization time to the heater and the non-energization time are mutually different. A heat power mode control means in which a plurality of different heat power modes are set, and a control device having a timer means, a heat power selection means for selecting any one of the plurality of heat power modes, and a cooking time in the timer means. A timer to be set, and an opening / closing means that is operated by the control device within the cooking time, has an opening / closing switch inserted into an energizing circuit for the heater, and opens / closes the switch in the selected heating mode. In addition to the above, the low thermal power mode among the above thermal power modes is the initial mode in which the power is intermittently energized and the subsequent thermal mode. And the energization time in the intermittent energization in the initial mode is longer than the energization time in the intermittent energization in the mode.

[Operation] In the present invention, the cooking time is set in the timer means of the control device by operating the timer, and the heating cooking is completed when the cooking time elapses. In addition, the heating power selecting means,
By this operation, one of the plurality of heating modes set in the heating mode control means of the control device is selected.

Therefore, by operating the timer after the operation of the heating power selecting means, heating cooking for the set cooking time is performed in the selected heating power mode. The opening / closing means operated by the control device at the time of this cooking opens and closes the on / off switch according to the selected heating mode. Thereby, the energization time to the heater to which the open / close switch is connected in series and the non-energization time are controlled. For this reason, for example, in the case where control is performed so that a longer energizing time is secured within the cooking time, it is possible to perform heating cooking with a strong heating power, and more non-heating cooking is performed within the cooking time. If energizing time is secured,
You can cook with low heat.

As described above, the thermal power is controlled by controlling the amount of power supplied to the heater within a certain heating time (cooking time) while keeping the calorific value of the heater itself constant, so that the wattage of the heater is controlled. There is no need to switch between.

Moreover, in the thermal power mode in which the non-energizing time is set to a time other than zero, that is, in the mode with a low thermal power, cooking is performed with a lower thermal power than the thermal power mode in which the non-energizing time is set to zero. In this mode, the initial mode in which the intermittent power is supplied is executed, and thereafter, the main mode in which the intermittent power is supplied continuously is executed. Therefore, the temperature inside the heating chamber can be raised to the set temperature range with the strong thermal power obtained in the initial mode in which the energization time within a unit time is longer than the energization time in this mode, so that the setting can be made in a shorter time than when the energization starts The temperature in the heating chamber can be raised to the temperature range, and since the intermittent energization is performed at the time of the start-up, it is possible to prevent a high heating power which adversely affects the cooked food with a low heating power.

Embodiment An embodiment in which the present invention is applied to an oven toaster will be described below with reference to FIG. 1 to FIG.

In FIG. 10, reference numeral 1 denotes a case constituting an outer shell of the oven toaster, and an opening / closing door 3 is rotatably attached to a front panel 2 of the case 1. Open / close door 3 in case 1
A heating chamber 4 having a front opening which is opened and closed by
In the heating chamber 4, heaters 6 are provided along with the grill 5, respectively, above and below the grill 5. These upper and lower heaters 6 are connected in parallel or in series. The heater 6 is connected to a commercial AC power supply 7 (see FIG. 1) via a plug 1a.

A timer storage chamber 8 (see FIG. 3) is formed in the case 1 so as to be separated from the heating chamber 4. The storage chamber 8 is provided with a timer 9 for setting a power supply time to the heater 6. I have. The timer 9 has a frame 10, as shown in FIGS. Front 10a of frame 10
A bracket 11 is attached to the front panel 2, and the bracket 11 is screwed to the surface of the front panel 2.

An operation shaft 12 is rotatably supported on the upper part of the frame 10. The front end of the operation shaft 12 penetrates the front panel 2, and a timer knob 40 is attached to the penetrating end. Operation axis
Numeral 12 is manually rotated together with the timer knob 40 in the timer winding direction and the rewinding direction. When the operating shaft 12 is rotated in the timer winding direction, a mainspring (not shown) is wound in conjunction therewith, and the operating shaft 12 is reversed in the timer rewinding direction (see FIG. 8) by the return force of the mainspring. (The direction of the arrow A).

As shown in FIG. 3, the operation shaft 12 is provided with a large gear 13 which rotates integrally therewith. Large gear 13 is frame 10
The escape wheel & pinion 15 is coaxially fixed to one end surface of the small gear 14. Escape wheel 15
A balance 16 is arranged below the balance. The balance 16 is rotatably supported on the frame 10 via a pivot 17 (see FIGS. 8 and 9). Are provided with a pair of engaging claws 19a and 19b which are detachably engaged at two places separated from each other.

A solenoid 21 for rotating the balance 16 via a bracket 20 is attached to a lower rear surface 10b of the frame 10. Solenoid 21 is connected to a stabilized power supply 23 for solenoid (see FIG. 1) for exchanging AC current from commercial AC power supply 7 to DC and adjusting the voltage appropriately.
The power supply 23 is magnetized to magnetize the iron core 24.

The magnetic metal plate 25 is opposed to the
Is pivotally locked at one end. The other end of the magnetic metal plate 25 extends through the through hole 26 provided in the frame 10 toward the balance 16, and the locking portion 27 provided at the other end is hooked on the locking arm 31 of the balance 16. I have. The magnetic metal plate 25 is urged by a tension spring 28 in a direction away from the iron core 24. This urging pushes up the locking portion 27 of the magnetic metal plate 25, so that the balance 16 is rotated counterclockwise as shown by the arrow B in FIG. Therefore, of the hooking claws 19a, 19b of the balance 16,
One hooking claw 19 located on the rear side in the rotation direction of the escape wheel 15
“a” is hooked on the tooth portion 18 to prevent the rotation of the escape wheel & pinion 15 due to the returning force of a spring (not shown).

When the magnetic metal plate 25 is attracted to the iron core 24, the locking portion 27 of the magnetic metal plate 25 is pulled down as shown in FIG.
The balance 16 is rotated clockwise as shown by the arrow C in FIG. Then, one of the hooking claws 19a hooked on the escape wheel 15 is disengaged from the escape wheel 15 and the rotation regulation of the escape wheel 15 is released. Hook claw
19b enters between the tooth portions 18 of the escape wheel & pinion 15. Therefore,
When the escape wheel 15 is rotated by a certain angle due to the release of the rotation regulation, the other tooth portions 18 are engaged with the engaging claws 19b, and the rotation of the escape wheel 15 is stopped again. I have.

That is, the escape wheel 15 rotates by one pitch of the tooth portion 18 every time the balance 16 rotates once. This rotation is performed by the operation shaft 12 through the small gear 14 and the large gear 13. The operating shaft 12 is intermittently driven to rotate in response to the excitation of the solenoid 21. Therefore, in the present embodiment, the driving means 29 for driving the operation shaft 21 is constituted by the large gear 13, the small gear 14, the escape wheel 15, the balance 16, the magnetic metal plate 25, and the solenoid 21.

On the front panel 2 of the case 1, a scale 30 for displaying the cooking time, which is located around the timer knob 40, is displayed every 30 minutes.
The cooking time is set by aligning the indicator protrusion 40a of the timer knob 40 with the scale 30.

Also, as shown in FIG. 3, the operation shaft 12 has a first plate cam.
47 and a second plate cam 48 are fixed. At positions facing the cam surfaces 47a, 48a of the plate cams 47, 48, a timer switch, that is, a normally-open enlarged switch 49 and a normal switch 50 for switching a solenoid drive mode of the control device 41 described later are provided. . These switches 49, 50
Are provided with cam followers 49a and 50a that are in contact with the cam surfaces 47a and 48a, and when the operation shaft 12 is turned in the winding direction via the timer knob 40, the cam followers are driven according to the shapes of the cam surfaces 47a and 48a. The child 49a, 50a is pushed up, and each switch 49, 50 is individually closed.

That is, in this embodiment, the index protrusion 40 of the timer knob 40 is used.
When a is in the off position, both switches 49 and 50 are both open. Among them, the enlargement switch 49 closes when the indicator projection 40a is set for a short time from 1 minute to 15 minutes, The switch 50 sets the indicator protrusion 40a from 15 minutes to 3
It closes when set for a long period of 0 minutes. Therefore, the rotation angle of the operation shaft 12, that is, the set cooking time is detected by the switches 49 and 50, and the solenoid control means of the control device described later sends an operation pulse to the solenoid 21 at an interval of 30 seconds. The mode is switched to either one driving mode or a second driving mode in which operation pulses are transmitted at one-minute intervals.

When the cooking time is set to a short time zone in such a driving mode, the driving speed of the driving means 29 is doubled as compared with the case where the cooking time is set to a long time zone. distance L ₁ of the scale 30 which displays the time zone, is enlarged to twice the distance L ₂ of the scale 30 of the long band.

The solenoid 21 of the timer 9 is controlled by a control device 41 composed of a microcomputer.
As shown in FIG. 1, the control device 41
2, solenoid control means 43, and thermal power mode control means 4
At least 4. The control device 41 converts an AC current from the commercial AC power supply 7 into a direct current and is driven by a microcomputer power supply 36 that appropriately adjusts the voltage.

The cooking time is set in the timer means 42 via the timer 9, and the set time is determined by counting the number of pulses obtained by the oscillation circuit 45 connected to the control device 41 with a counter. Is to be measured.

The timer control means 43 is connected to a solenoid control means 43. This means 43 includes, for example, once every 30 seconds when the timer knob 40 is set to a short time period of 15 minutes from the off (off) state, and the timer knob 40 for 15 to 30 minutes. Each of the two solenoid drive modes for sending an operation pulse to the solenoid 21 at a rate of once a minute when adjusted to a long time zone is programmed and set in advance. For this reason, when the timer control 40 is set to a short time period, the solenoid control means 43 sets the energization interval to the solenoid 21, that is, the non-energization interval from one energization time to the next energization time to 30 seconds, and conversely According to the time zone,
The non-energization interval is one minute, and the energization to the solenoid 21 is controlled in such two solenoid drive modes.

The thermal power mode control means 44 is connected to the timer means 42. The control means 44 supplies a unit time (30
A plurality of thermal power modes having different ratios of the energizing time and the non-energizing time per second) are set in advance, for example, each of a “high heat” heat mode, a “medium heat” heat mode, and a “low heat” heat mode.

The “strong fire” power mode is a setting in which the fire energizing time is zero and the energizing time is continuous. In the “medium fire” power mode, the energizing time and the non-energizing time are both set to 15 seconds, and are alternately repeated. "Low heat"
The thermal power mode has an initial mode performed at an early stage of the mode execution, and a main mode subsequently performed. In the initial mode, the energizing time is set to 20 seconds, the non-energizing time is set to 10 seconds, and the cycle is repeated twice. In this mode, the energizing time is set to 8 seconds and the non-energizing time is set to 22 seconds, and these are alternately repeated.

A relay 46 as opening / closing means is connected to the control device 41. The relay 46 is formed to have a normally open type open / close switch 46a as a relay contact, and the open / close switch 46a is inserted into an energizing circuit for the heater 6 described above. The relay 46 opens and closes the open / close switch 46a in accordance with a selected one of the plurality of heating modes set in the heating mode control means 44. Thereby, the energizing time and the non-energizing time to the heater 6 are controlled.

A printed wiring board 71 is mounted on the back side of the front panel 2 as shown in FIG. The substrate 71 is provided with a heat switch 72 as a heat selection means, and light-emitting elements 73 to 75 for displaying heat, each of which is exposed on the surface of the front panel 2. In the case of the present embodiment, the heating power switch 72 is formed by a push-button switch of an automatic return type, and any one of the plurality of heating power modes can be selected by the number of times of the pressing operation. .

Each of the light emitting elements 73 to 75 is formed of a light emitting diode or the like, the upper light emitting element 73 is for displaying a `` high heat '' heating mode, the middle light emitting element 74 is for displaying a `` medium heating '' heating mode, and The lower light emitting element 75 is used for displaying a "low heat" heating mode. And the light emitting element 73
All of 75 to 75 are made to blink and light continuously by the control device 41.

Reference numeral 38 in FIG. 1 denotes a buzzer for notifying completion of cooking.

Next, the operation of this embodiment will be described with reference to FIG.

When the plug 1a is connected to the outlet, the power is turned on, and the control device 41 executes step 1 to blink only the light emitting element 73 for “high heat” heating mode display, and indicates that the power is turned on. Execute step 2 and set the thermal power switch
It is determined whether 72 is on. If this determination is NO, the control device 41 automatically selects the "high heat" heating mode and proceeds to step 3 to determine whether the timer 9 has been operated. When the timer 9 is operated and the determination in step 3 is YES (established), it is determined in step 4 whether or not at least one of the contacts of the timer 9, that is, at least one of the switches 49 and 50 is closed. Is established, step 5 is executed to excite the relay 46. Thereby, the open / close switch 46a is closed. Next, step 6 is executed to continuously light only the light emitting element 73 for displaying the "high heat" heat mode, thereby indicating that cooking is performed in the "high heat" heat mode.

In step 7, which is executed subsequently, the control device
41 starts the timer operation of the timer means 42, controls the relay 46 in accordance with the “high heat” heating power mode by the heating power mode control means 44, and controls the excitation of the solenoid 21 by the solenoid control means 43.

Accordingly, in the case of the “high heat” heating mode, since the open / close switch 46a of the relay 46 is kept closed continuously, the heater 6 is continuously energized, and the heating of the high heat by the heater 6 is performed. Done. Also, the solenoid 21 is intermittently excited according to the operation pulse,
The magnetic metal plate 25 is intermittently sucked to rotate the balance 16. Therefore, every time the balance 16 rotates, the escape wheel 15
The spring is rotated by one pitch of the tooth portion 18 by the return force of the mainspring, and the operation shaft 12 is gradually rewound.

Thereafter, at step 8, the index protrusion 40 of the timer knob 40 is set.
It is determined whether or not a has rotated to the off position, that is, whether or not the timer contact (the enlargement switch 49 in this embodiment) has been turned off. When the determination is made, the solenoid 21
Then, the energization to the relay 46 is interrupted by executing the next step 9. Accordingly, the open / close switch 46a is opened, the power supply to the heater 6 is cut off, and the cooking is completed, and the completion is sounded by the buzzer 38. After the completion of the cooking, the process returns to step 1. As a result, only the light emitting element 73 blinks again to indicate that the power is on.

If the determination in step 2 above is YES, step 1
Proceeding to 1, it is determined whether the thermal power switch 72 has been pressed once and turned on. When this determination is made, the control device 41 automatically selects the "medium fire" power mode, proceeds to step 12, and blinks only the light emitting element 74 for "medium fire" power mode display. Thereby, the selection of the “medium heat” power mode is displayed. This is followed by timer 9 in step 13.
It is determined whether or not has been operated. When the timer 9 is operated and the determination in step 13 is YES (established), in step 14, the contacts of the timer 9, that is, the switches 49 and 5,
It is determined whether at least one of 0 is closed. When the determination is made, the process proceeds to step 15, where the relay 46 is excited, and the open / close switch 46a is closed. Next, step 16 is executed to continuously light only the light emitting element 74 for displaying the "medium fire" power mode to indicate that cooking is to be performed in the "medium fire" power mode. Then, in step 17 executed subsequently, the control device 41 starts the timer operation by the timer means 42 and controls the relay 46 according to the `` medium heat '' heat mode by the heat mode control means 44, In addition, the excitation of the solenoid 21 is controlled by the solenoid control means 43.

Accordingly, in the "medium fire" mode, the open / close switch 46a of the relay 46 is opened and closed every 15 seconds, so that the heater 6 is intermittently energized every 15 seconds. Is cooked. At the same time, the intermittent excitation of the solenoid 21 is carried out in the same manner as in the above-mentioned “high heat” heating mode, and the magnetic metal plate 2
5, balance 16, escape wheel 15, escape wheel 1 through the mainspring
The operation shaft 12 is gradually rewound by one pitch of the fifth tooth portion 18. Thereafter, the process returns to step 1 via steps 8 and 9 described above.

If the determination in step 11 is NO, step 21
Then, it is determined whether the thermal power switch 72 has been pressed twice and turned on. If this determination is made, the control device
41 automatically selects the “low heat” heat mode,
Proceed to 12 to flash only the light emitting element 75 for displaying the "low heat" heating mode. Thereby, the selection of the “low heat” heat mode is displayed. Thereafter, it is determined in step 23 whether the timer 9 has been operated. And this timer 9
Is operated, and the determination in step 23 becomes YES (established), the contact of the timer 9, that is, the switches 49 and 5 are determined in step 24.
It is determined whether at least one of 0 is closed. When the determination is satisfied, the process proceeds to step 25, where the relay 46 is excited, and the open / close switch 46a is closed. Next, step 26 is executed to continuously light only the light-emitting element 75 for displaying the "low heat" heat mode to indicate that cooking is to be performed in the "low heat" heat mode. Then, in step 27 executed subsequently, the control device 41 starts the timer operation by the timer means 42, controls the relay 46 according to the `` low heat '' heat power mode by the heat power mode control means 44, and The excitation of the solenoid 21 is controlled by the solenoid control means 43.

Therefore, in the case of the "low heat" heating mode, after the initial mode is first performed, that is, the opening and closing operation of opening and closing the switch 46a of the relay 46 for 20 seconds and then opening for 10 seconds is repeated twice, and subsequently, This mode, ie, open / close switch 46
The opening / closing operation of opening a for 22 seconds after closing a for 8 seconds is repeated. By performing such an intermittent energization to the heater 6, the heater 6 performs heating cooking of low heat.

Then, in the initial mode, the temperature of the heating chamber is increased in a short time by the intermittent energization for 20 seconds and the non-energization for 10 seconds, while the non-energized state for 10 seconds is provided, so that the heating power is weakened and thus low. The cooked food is not exposed to the high heat which has an adverse effect.

Simultaneously with the intermittent energization of the heater 6 as described above, intermittent excitation of the solenoid 21 is carried out in the same manner as in the above-mentioned "high heat" heating mode, and the magnetic metal plate 25, the balance 16, the escape wheel
15. The operation shaft 12 is gradually rewound by one pitch of the tooth portion 18 of the escape wheel 15 via the mainspring. Thereafter, the process returns to step 1 via steps 8 and 9 described above.

If the determination in step 21 is NO, the process proceeds to step 31 to determine whether the thermal power switch 72 has been pressed three times and turned on. If this determination is made, the control device 41 executes step 32 to turn off all the light emitting elements 73 to 75. In this case, even though the control device 41 is actually energized, by turning off the light emitting elements 73 to 75, the oven toaster can be brought into a state as if it were not energized. Step 31
If the determination in step is NO, step 33 is executed to determine whether the thermal power switch 72 has been pressed four times and turned on. When the determination is NO, the control device 41 executes the above-described step 32. When the determination is YES, the control device 41 determines that one selection cycle of the thermal power mode is completed, and returns to step 1 to return to the power supply mode. Is displayed by blinking of the light emitting element 73 for "high heat" heating mode display.

As described above, by operating the relay 46 based on each heating mode of the heating mode control means 44 determined in the control device 41, the open / close switch 46a of the relay 46 in series with the heater 6 is opened and closed. By controlling the energizing time and the non-energizing time to the heater 6, the heat generation of the heater 6 is increased.
Thermal power can be controlled to "medium" or "weak".

That is, while the heat generation amount of the heater 6 itself is kept constant, the amount of electricity supplied to the heater 6 per unit time within an arbitrary heating time set by the timer 9 is controlled by the selected heating mode of the control device 41. Thus, it is not necessary to switch the wattage of the heater in this thermal power control.

Therefore, since diodes and many switches conventionally required for controlling the heating power can be dispensed with, the cooking target can be heated and cooked by selecting a plurality of heating power levels with a simple configuration.

Moreover, in the "low heat" heat mode, the power supply amount in the initial mode is first increased in the initial mode, and then the power supply amount is controlled in two stages to shift to the main mode in which the power supply amount is smaller than the initial mode. In the initial mode, the temperature of the heating chamber 4 can be quickly raised near the set temperature range in the “low heat” heating mode, and thereafter, can be raised to the set temperature range in this mode. Therefore, it is possible to raise the temperature of the heating chamber 4 to the set temperature range in a short time from the start of energization, and to expose an object to be cooked with low heat by the intermittent energization in the initial mode to high heat, which is adversely affected. Can be prevented.

The fact is clarified by a comparative test performed by the applicant, and the results are shown in FIG. FIG. 11 shows temperature characteristics when the “low heat” heat mode is performed in a state where the heating chamber 4 is cold. In FIG. 11, X indicates the characteristics according to the “low heat” heat mode, and Y in FIG. Therefore, the temperature characteristic when the thermal power mode of only this mode is performed is shown. As apparent from FIG. 11, in the case of the present embodiment, the temperature reaches the lower limit temperature of the set temperature range (about 140 ° C. to 190 ° C.) in 1 minute and 30 seconds. Takes five minutes and thirty seconds.

Therefore, the cooking time can be shortened and the power consumption can be reduced accordingly. Incidentally, cooking of gratin and pizza, which is generally cooked over low heat, usually requires a cooking time of about 12 minutes. However, when the oven toaster of the present embodiment was used, cooking was completed in about 9 minutes.

Although the above-described embodiment is configured as described above, in the present invention, the timer 9 may have a single drive mode, or may be a mechanical timer or a digital timer. Also, at least two thermal power modes are required. The heating mode in which continuous energization is performed may be omitted, and all the heating modes in which intermittent energization is performed may be configured to have the initial mode and the main mode. Further, the present invention is not limited to the oven toaster, and it is needless to say that the present invention can be applied to an oven, a range with a heater, and the like.

[Effects of the Invention] As described above, according to the heating cooker of the present invention, the amount of electricity supplied to the heater within a certain heating time is controlled by the control device while maintaining the calorific value of the heater itself at a plurality of stages. Therefore, it is not necessary to switch the wattage of the heater in the heating power control, and therefore, the heating power can be adjusted in a plurality of stages with a simple configuration without using many parts. In addition, the amount of energization due to intermittent energization per unit time in the low heat mode is not always constant throughout the certain heating time, and the amount of energization is large only at the beginning of energization, so that the temperature of the heating chamber reaches the set temperature. Therefore, the cooking time can be shortened, the power consumption can be reduced, and a high heating power which adversely affects the cooking of the object to be cooked with a low heating power can be prevented.

[Brief description of the drawings]

1 to 11 show one embodiment of the present invention, FIG. 1 is a block diagram, FIG. 2 is a flowchart showing a control procedure in a thermal power mode, FIG. 3 is a sectional view of a timer, and FIG. Third
FIG. 5 is a front view of the operation panel of the oven toaster, FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5, FIG. 7 is a timer knob and a scale. 8 and 9 are operation explanatory views showing the operation of the drive mechanism, respectively, FIG. 10 is a perspective view of the entire oven toaster, and FIG. 11 is a graph showing the rise in the temperature of the heating chamber of the oven toaster. It is a temperature characteristic diagram which shows a change. FIG. 12 is an electric circuit diagram showing a thermal power control structure of a conventional oven toaster. 4 ... heating room, 6 ... heater, 9 ... timer, 41 ...
Control device 42 Timer unit 44 Thermal mode control unit 46 Relay 46a Open / close switch 72 Thermal switch (thermal power selecting unit).

Claims (1)

(57) [Claims] 1. A control system comprising: a heater provided in a heating chamber; heating mode control means for setting a plurality of heating modes in which a ratio of an energization time to the heater to a non-energization time is different from each other; An apparatus, a heating power selecting means for selecting any one of the plurality of heating power modes, a timer for setting the cooking time in the timer means, and the heater operated by the control device within the cooking time. And an opening / closing means for opening / closing the switch in the selected heating mode. The heating mode having a lower heating power among the heating modes is intermittently energized. It has an initial mode and a main mode that is performed subsequently to the initial mode. Cooking device is characterized in that longer than the energization time in the intermittent energization over de.