JPH0351971B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a toaster oven equipped with a reheating function, which is generally used for home use.

Configuration of conventional example and its problems First, the reheating function will be explained. When the first timer, which is the main timer for roasting bread, etc., roasts bread, etc., if the bread is browned lighter than desired, the heater is energized again to darken the browned color. The second timer function provided for this purpose is called the reheating function. This second timer numbers the bread in order from lightest to darkest, with bread that is barely browned as number 2 and bread that is almost completely black as browned. This is a timer that energizes the heater for the baking time that corresponds to the one step difference in the baking color number (color number 15), that is, the baking color difference of one rank, and is used in ovens that have heaters with a total output of about 800 watts on both sides of the bread. In a toaster, the baking time corresponding to the first rank is about 15 seconds. here,
For example, if the desired bread color is 7 (a golden brown color on almost all sides), the user can set the timer based on experience. The roasting time is set at an appropriate time, but the resulting bread's browning color rarely deviates by a wide margin from the desired browning color, and is about 2 ranks.
That is, taking the above-mentioned baking number 7 as an example, baking number 5
It falls within the range of ~9. In addition, the user can check the degree of baking from the outside while baking the bread, so even if there is time left on the timer, the timer can be manually turned off when the bread reaches browning number 7. It rarely burns darker than color number 7.
However, if the baked color that is baked due to the timer operation is light and the browning number is about 5 to 6, the user must set the timer again and energize the heater, but the color corresponding to 1 rank of browning will be reduced. of time, i.e. about 15
Since it is extremely difficult to set the time in seconds, a functional member for short-term energization that can be easily operated is required in addition to the main timer. A timer provided for this purpose that operates for approximately 15 seconds is a reheating timer.

A conventional toaster oven equipped with this reheating function is configured as shown in Figure 1.
In the figure, 1 is an AC power supply, 2 is a heater, 3 is a main first timer, and 4 is a second timer for reheating.
This is the timer. In the toaster oven having this configuration, the user uses the first timer 3 to empirically set the time corresponding to the desired browning color to toast the bread. If the roasting result is lighter than the desired roasting color as described above, the user can use the second timer 4 to darken the roasting color. The toaster oven having the configuration shown in FIG. 1 has such a reheating function. Furthermore, if the second timer 4 is configured to operate for 15 seconds with only a switch operation, the reheating operation described above can be performed with a very simple operation. However, in the case of the toaster oven having the configuration shown in Fig. 1, in order to add the reheating function, a second timer that operates for 15 seconds must be provided separately from the main first timer, and multiple Since multiple timers are required, the structure is complicated and has the drawbacks of being expensive. Although not shown in the figure, the setting section for roasting time, etc. is configured with a rotary variable resistor, and the timer section is equipped with a microcomputer, etc., with a main first timer and a second timer for additional roasting. There was also a device with a simple configuration by combining timers, but this type of configuration required a display unit as shown in Figure 2.
When the user performs the additional roasting operation after roasting bread, etc. using the main first timer, the user must first set the timer knob to the additional roasting portion and turn on the separately provided start switch, so it is difficult to operate. It had the disadvantage that it became a nuisance.

OBJECTS OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned drawbacks and to realize a reheating function of a toaster oven that has a simple structure and is easy to operate.

Structure of the Invention The present invention includes a heater, a first timer that controls the energization time of the heater, and energization of the heater only when the first timer is operated within a certain period of time after energization of the heater is turned off. a second timer that performs a second timer; and switching means for selecting the second timer, and when the first timer is started again within a certain period of time after the heater is turned off, performs a reheating operation regardless of the setting of the first timer, Others are operated by the first timer.

DESCRIPTION OF THE EMBODIMENTS FIG. 3 is a block diagram showing a specific configuration of an embodiment of the present invention, in which 1 is an AC power source, 2 is a heater, and 5 is a device that controls the energization time of the heater 2 and roasts the food to be cooked. A first timer 6 that uses heating is a second timer that energizes the heater 2 for about 15 seconds for additional heating, and is provided in parallel with the first timer 5. The timers 6 operate in conjunction with each other, and when the first timer 5 receives a start input, the second timer 6 also operates. Reference numeral 7 denotes an energization storage means which stores electricity when the heater 2 is energized and outputs a signal for a certain period of time after the energization ends, and is composed of a C/R or a latch circuit, etc.; 8 a first timer 5 or a second timer 5; This switching means connects the second timer 6 when the output signal is output from the energization storage means 7, and connects the first timer 6 when no signal is output from the energization storage means 7. Connect 5.

The operation of the toaster oven configured as above will be explained.

When bread is placed in the roasting chamber of the toaster oven, the roasting time is set using the first timer 5, and the timer is started, the heater 2 is energized and the bread is roasted for the time set by the first timer 5. Grilling takes place.
When the heater 2 is energized, the energization storage means 7 operates to memorize that the heater 2 has been energized, and when the energization of the heater 2 ends, it outputs a signal for a certain period of time after the end of the energization. This certain period of time has a width depending on the design, but in one embodiment of the present invention, it is set to 15 seconds. The meaning of these 15 seconds will be explained later, but
The energization storage means 7 is stored after the energization of the heater 2 is completed.
Outputs a signal for only 15 seconds. This signal causes the switching means 8 to switch from the first timer 5 to the second timer 6.
connection is switched. And energization storage means 7
If the first timer 5 is started again while the heater 2 is outputting the signal, that is, within 15 seconds after the heater 2 is energized, the switching means 8 has been switched to the second timer 6. A second timer 6 linked to the first timer 5 operates. Therefore, the heater 2 is energized not by the first timer 5 but by the second timer 6, and the heater 2 is energized for a short time (about 15 seconds) for additional heating and then turned off.

As described above, in one embodiment of the present invention, the energization time of the heater 2 is set normally, that is, the energization storage means 7
When no signal is output, the first timer 5
It is determined by the time setting of the energization memory means 7.
When the signal is output from the heater 2
When the first timer 5 is started again within 15 seconds after the first timer 5 is energized, the toaster oven performs a reheating operation. Therefore, if the user wants to continuously roast bread, etc., all that is required is to wait 15 seconds after the heater 2 is turned off and then start the timer again. , additional baking can be performed by starting the first timer 5 again within 15 seconds after the power supply to the heater 2 ends, and the first timer 5 roasts the bread etc. If the browning result is lighter than the desired browning color, additional baking is performed using the above procedure to increase the browning color by about one rank and obtain the desired browned bread.

In addition, in one embodiment of the present invention, the energization storage means 7
assumes that the signal is output for 15 seconds after the heater 2 is turned off, but this 15 seconds means that when baking bread etc. continuously, the user must set the first timer 5.
After the roasting process is completed, remove the bread, etc. from the toaster oven and replace the bread, etc.
This is the time required to set and start the first timer 5 again, and is about 15 seconds in normal operation. Therefore, when the user continuously uses the timer as a timer, the user does not need to be aware of this 15 seconds, which is the time that inevitably occurs when changing the food in the refrigerator. In addition, in the case of additional roasting, there is no need to replace the bread, etc., so it is easy to start the timer operation again within 15 seconds after the first timer 5 turns off. Since the user can immediately look into the inside of the refrigerator to check the degree of baking, the above operation can be easily performed without requiring any special operations.

As described above, according to one embodiment of the present invention, bread can be baked continuously if the user performs normal operations, and even when performing additional baking operations, the bread can be baked continuously without any special operations. Simply off after 15
It is only necessary to operate the first timer 5 within seconds, and reheating can be performed regardless of the setting of the first timer 5, so there is no need to set a timer.
A toaster oven capable of reheating can be realized with simple operation.

Next, still another embodiment of the present invention will be described.

FIG. 4 shows a specific circuit diagram in still another embodiment of the present invention. In the figure,
1 is an AC power supply, 2 is a heater, 10 is a switch with a self-holding function, 11 is a relay coil for turning off the switch 10, and 12 is a relay coil 1
a thyristor for controlling the current flowing to 1; 13;
15 constitutes gate control means for controlling the gate of the thyristor 12, 13 is a capacitor, and 14 and 15 are resistors. 16 is a variable resistor for the user to set the energization time to the heater 2, and 17 is an A/D converter that inputs the output of the variable resistor 16 and outputs a signal correlated to this input voltage. The setting input means 18 is a microcomputer, which configures the first timer 5, second timer 6, energization storage means 7 and switching means 8 shown in FIG. 3 according to a built-in program. be.

That is, when it is detected that the switch 10 is turned on, the set time set by the variable resistor 16 is determined, this established time is measured, and after this set time, a gate control signal for the thyristor 12 is generated and the switch 10 is turned on. A first timer is configured to turn off the heater 2, and when the heater 2 is energized, a energization storage means is configured to memorize the energization.
Switching to select the first timer or the second timer by determining whether it is within a preset certain period of time, for example, 15 seconds after the switch 10 is turned off, based on the contents of the energization storage means. and when it is detected that the switch 10 is turned on, within 15 seconds after said turning off,
Regardless of the setting of the variable resistor 16, the pre-programmed time suitable for reheating, e.g.
A second timer is configured to output a gate control signal for the thyristor 12 after 15 seconds so that the heater 2 is energized for only 15 seconds.

Specifically, although not shown, there is a storage unit that stores programs, time data, etc., an input unit that inputs signals from the setting input means 17, etc., and an output that outputs gate control signals for the thyristor 12. and an arithmetic control section that controls the storage section, input section, and output section, and performs comparisons and calculations of each data. Further, 19 is a switch state input means that outputs a signal when the switch 10 is turned on.

The operation of this embodiment configured as described above will be explained.

FIG. 5 shows the main part of a flowchart in one example of control by the microcomputer 18.

Generally, a user puts the food to be cooked into the toaster oven, sets the variable resistor 16 for time setting, and turns on the switch 10. switch 1
0 is turned on, a signal is transmitted to the microcomputer 18 via the switch state input means 19 that the switch 10 has been turned on. When the microcomputer 18 receives the signal, it detects in step 21 that the switch 10 has been turned on. In step 21, it is determined whether 15 seconds have passed since the switch 10 was turned off, and if 15 seconds have not elapsed, it is determined that the switch 10 was turned on again within 15 seconds after the switch 10 was turned off last time. Therefore, proceed to step 25 to carry out the reheating operation and turn off the switch 10. Further, if 15 seconds have elapsed after the switch 10 was turned off, the microcomputer 18 proceeds to step 22, inputs the time set by the variable resistor 16 via the setting input means 17, and completes the set time. After the time has elapsed, proceed to step 24 and turn off the switch 10. As described above, according to the configuration of this embodiment, if the switch 10 is turned on after 15 seconds have passed after the switch 10 is turned off,
It can be used as a timer that always energizes the heater 2 for the time set by the variable resistor 16, and if the switch 10 is turned on again within 15 seconds after the switch 10 is turned off, it can be used as a reheating operation. A toaster oven is configured. Moreover, in this case, there is no need to make any adjustments to the variable resistor 16 or the like in order to carry out the reheating operation, and a very simple operation such as turning on the switch 10 is sufficient.

In the description of the above embodiment, the first timer is a timer that energizes the heater 2 for a set time, but it can be replaced with an automatic roasting device for bread, etc. After roasting with the device, if the roasted color becomes lighter, it is possible to carry out additional roasting operation, and in this case, the additional roasting operation can be performed without changing the settings of the automatic roasting device, etc. This toaster oven is excellent in that it can perform additional heating, and is also excellent in that it does not require any separate switch for additional heating, making it an even more convenient toaster oven.

Effects of the Invention As described above, the toaster oven of the present invention includes a first timer that energizes the heater, and a first timer that energizes the heater when the first timer is operated within a certain period of time after the heater is turned off. a second timer for performing the above-mentioned operation, an energization storage means for storing the fact that the heater was energized for a certain period of time after the energization was turned off, and a second timer for storing the energization within or outside the certain period of time stored by the energization storage means. Alternatively, the second timer may be selected as a switching means, and the reheating operation may be performed by simply turning on the first timer again when it is determined that the brown color is light after turning off the power to the heater. be able to. Moreover, when using it as a normal timer, all you have to do is wait for the above-mentioned fixed period of time and then turn on the first timer. If you set it to the required minimum time, you won't have to consciously wait for a certain amount of time before turning on the switch when you normally change the food and cook, making it a very easy-to-use toaster oven. can be realized.

[Brief explanation of drawings]

Figure 1 is a block diagram showing the configuration of a conventional example;
3 is a block diagram showing the configuration of the present invention, FIG. 4 is a circuit diagram of another embodiment of the present invention, and FIG. 5 is an implementation of FIG. 4. This is a flowchart of an example program. 2... Heater, 5... First timer, 6... Second timer, 7... Energization storage means, 8... Switching means, 10... Switch, 11... Relay coil, 12... Thyristor, 16...variable resistor,
17...Setting input means, 18...Microcomputer, 19...Switch status input means.

Claims (1)

[Claims] 1 a heater, a first timer that controls the energization time of the heater, and a second timer that energizes the heater when the first timer is operated within a certain time after the energization to the heater is turned off; , an energization memory means for storing that the heater was energized for a certain period of time after the energization was turned off;
a timer or a switching means for selecting the second timer.