JPS63277021A - Oven toaster - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a toaster oven that is used to bake toast, gratin, pizza, kutsky, and other foods, or to heat cooked foods. be.

(Prior Art) With this type of toaster oven, attempts have been made to successfully achieve various types of cooking through automatic control.
The automatic control is broadly divided into cases of toasting and cases of other cooking.

Conventionally, in the case of toast, the cooking time for each successive batch is determined based on the count of the time required for the previous cooking after the previous cooking was completed, and the internal temperature is determined by the elapsed cooking time. It corresponds to the temperature increase according to the temperature. For other types of cooking, the actual cooking time is automatically set after the time when the internal temperature reaches the saturation point, depending on the type of cooking.

(Problems to be Solved by the Invention) In the conventional toasting control described above, the internal temperature at the start of toasting is not taken into account, so if the internal temperature does not reach a predetermined temperature, the toast obtained each time is The toast will be undercooked, and if the internal temperature is higher than the specified temperature, the toast you get each time will be overcooked. Moreover, since the cooking time must be constantly counted during each cooking and processed as data for setting the next cooking time, control becomes complicated.

Furthermore, regarding the control for other types of cooking mentioned above, although it is suitable for cooking at high temperatures, low-temperature heating is desired for warm foods that require sufficient temperature to reach the inside rather than browning. Such heating cannot be performed.

In short, in the conventional method, control is roughly divided depending on the type of cooking, but the control is not sufficient (means for solving the problem). As shown in the figure, means B for detecting the internal temperature of the toaster oven A, means C for setting the type of cooking, means for setting the cooking time, and controlling the cooking heater F according to inputs from these means. and a control means E, which controls cooking for a cooking time set corresponding to the specific cooking based on the internal temperature-required cooking time characteristic and the current internal temperature when a specific cooking is selected. and when another cooking is selected, cooking is performed for a cooking time set by a cooking time setting means at a predetermined internal temperature corresponding to that cooking. It is.

(Function) The detection signal from the chamber temperature detection means B, the setting signal from the cooking type setting means C and the cooking time setting means are controlled by the control means E.
given to.

When a specific cooking is set by the cooking time setting means, the control means E controls the characteristics of the internal temperature-required cooking time, that is, the required cooking time gradually becomes shorter due to the temperature increase change in the internal temperature as the cooking time elapses. The cooking time necessary for the specific cooking is set based on the relationship between the current temperature in the refrigerator and the current temperature in the refrigerator given by the temperature in the refrigerator B, and the cooking is controlled to be performed for the specified cooking time.

Thereby, the cooking time for a specific cooking can be specified and appropriately set from the internal temperature-required cooking time characteristic based on the current internal temperature. Once set, the control means E that receives the setting signal controls the heater F based on the internal temperature information from the temperature detecting means B so as to maintain the predetermined internal temperature corresponding to the set cooking. At the same time, cooking is performed for the cooking time set by the cooking time setting means.

As a result, cooking other than specific cooking can be done properly at the corresponding internal temperature, and the presence or absence of browning and the state of browning can be arbitrarily set by setting the cooking time.

(Example) The first embodiment of the present invention shown in FIGS. 2 to 6 will be explained. This example is a specific cooking method, such as regular toast for toasting regular bread or frozen toast for toasting frozen bread. Or do other cooking such as gratin, pizza,
This figure shows a toaster oven that can be used to bake kutsky and warm cooked foods.

As shown in FIGS. 2 to 4, the container 1 has an operation/control section 3 on one side of a cooking chamber 2. As shown in FIGS. A door 4 with a transparent window 4a is provided at the front of the cooking cabinet 2, and its lower edge is connected to the container body 1 by a hinge 5 so that it can be opened and closed. Inside the cooking chamber 2, heaters 6.7 are provided vertically in a horizontal position. A net-shaped cooking table 8 for receiving food is provided between the heaters 6 and 7, and is moved in and out of the cooking cabinet 2 in conjunction with the opening and closing of [4] by a mechanism (not shown).

At the bottom of the operation/control unit 3, there is a power supply board 12 equipped with a power supply circuit 35 that drives the heater 6, 7, etc., and its peripheral electrical equipment.
A synthetic resin base 14 is placed under the ceiling of the case 13 facing downward.
It is installed via. An operation panel 15 is provided on the front side of the operation/control section 3. From the bottom of the operation panel 15 are a power switch button 16, a browning adjustment knob 17,
A cooking start and end button 18, a timer setting button 19 for setting the cooking time, and a menu setting button 20 for setting the type of cooking are provided.
timer) display section 21, normal toast display section 22 and frozen toast display section 23 according to the type of cooking to be set.
, a gratin display section 24, a pizza display section 25, a cookie display section 26, and a hot food display section 27 are provided, respectively.

A microcomputer (hereinafter referred to as microcomputer) 51 that controls the heater 6.7 and a microcomputer board 52 equipped with peripheral electrical equipment are arranged on the back of the operation panel 15, and are integrated into a back plate 53 on the back of the operation panel 15. It is attached via a resin base 54.

As shown in the control circuit of FIG. 6, these operation parts and display parts on the operation panel 15 are used as an operation circuit block 31, a 7-segment 4-digit cooking time display circuit block 32, a menu display circuit block 33, and a browning color display circuit block 33. Adjustment knob 1
The color baking adjustment volume 34 interlocked with 7 is individually connected to the microcomputer 51. Furthermore, the microcomputer 51 is also connected to a power supply circuit 35, a clock oscillation circuit 36, a control circuit 37 for the heaters 6 and 7, a temperature sensor 38 for detecting the temperature inside the cooking chamber 2, and a buzzer 46.

As shown in FIGS. 2 and 4, this temperature sensor 38 is held in a lower end cylindrical portion 41a of an aluminum sensor holder 41, and this sensor holder 41 is held by both pieces 42a, 42c of an elastic clip 42 folded in half. Side plate 43 of cooking cabinet 2 between
It is held elastically in close contact with the back surface of the navel. For this purpose, a slit 44 is provided in the side plate 43 of the cooking chamber 2 so that the piece 42c of the clip 42 can be inserted into the cooking chamber 2 from the back side of the side plate 43. In this inserted state, the bulge 42b of the bifold part is inserted into the slit 4 of the side plate 43.
One piece 42C is in contact with the back surface of the upper wall 43a on top of 4.
It is designed to be more stable by bringing it into close contact with the surface of the lower wall 43b. Thereby, the heat in the cooking chamber 2 is easily conducted to the temperature sensor 38 through the side plate 43 and the sensor holder 41.

A series of controls will be explained below. When the menu setting button 20 is operated, the type of cooking changes sequentially from normal toast, frozen toast, etc. under automatic control. This change in the type of cooking is externally displayed by changing the lighting position of each display section corresponding to the change. Therefore, a predetermined cooking setting is made by operating the menu setting button 20 so that the corresponding display section lights up.

If all normal toast is set, the microcomputer 51 sets the cooking time for normal toast based on the temperature information in the cooking chamber 2 at that time and the internal temperature-required cooking time characteristic, and presses the cooking start/end button 18. After the cooking start operation (start and end change alternately each time the button is pressed), the heater 6.7 is kept on for a set time to perform normal toasting for the set time. By operating the end button 18, automatic cooking can be ended artificially.

The internal temperature-required cooking time characteristic is known in advance as shown in the graph shown in FIG. Therefore, by storing this in the ROM of the microcomputer 51, you can know the required cooking time at that time depending on the current temperature inside the refrigerator, and you can successfully make the set regular toast based on the current temperature inside the refrigerator. It is possible to easily and appropriately set the required cooking time to achieve a good result. The cooking time is set in this manner,
To obtain regular toast with the same degree of doneness regardless of whether the internal temperature conditions are different each time, whether baking only once or baking many times in succession.

The operating position of the browning adjustment knob 17 determines the set value of the browning adjustment volume 34. In the state shown in the figure, knob 1
By moving 7 to the left side of FIG. 3, the degree of baked clay becomes lighter, and by moving it to the right side, it becomes darker.

In this case, the amount of heat consumed differs depending on whether only one piece of toast or two pieces of toast are baked, which affects the density of the toasted state.

Therefore, for the browning adjustment knob 17, there is a shade adjustment scale 55 for single-layer baking and a shade adjustment scale 56 for double-layer baking.
(Fig. 3), and the setting position can be changed in order to achieve the same browning color when baking one sheet and when baking two sheets.

Next, if frozen toast is set, the microcomputer 51
During the automatic control flow in the case of normal toast, control is performed to maintain a low-temperature heating state for thawing frozen bread for a certain period of time before starting normal toasting.

This is shown in a simple flowchart as shown in FIG.

By performing such a treatment, it is possible to eliminate the disadvantage that when frozen bread is baked at normal temperature from the beginning, the surface that thaws quickly becomes burnt, making it difficult for heat to reach the inside.

As for such thawing processing, when frozen toast is performed at the beginning of use of the open toaster, the thawing processing time is taken from the start of cooking until the internal temperature rises to a predetermined cooking temperature. As one example of this, as shown in the graph of FIG. 9, the heater 6.
By turning on and off 7 for a certain short period of time, a wavy temperature rising state is obtained, and thawing is completed before the internal temperature exceeds the thawing upper limit temperature T0, and after the thawing processing time has elapsed, heater 6.7 is turned on at full power. Leave it on from beginning to end and let it bake like normal toast.

As another example, as shown in Fig. 10, at a temperature rise point suitable for thawing during bread baking, the heater 6.
It is also possible to control on and off.

As another example, as shown in the graph of Figure 11, the heater 6.7
It is also possible to obtain a temperature range T, ~T2 suitable for thawing by a wave-like temperature increase state by turning on and off each time for a fixed short period of time.

Furthermore, as shown in FIG. 12, the heater 6.7 may be turned off only once when the upper limit thawing temperature T0 is reached, thawing is accomplished while the temperature is falling, and the phosphorus is then raised again.

Next, whether the frozen toast is for the second or subsequent time or immediately after the regular toast, if the internal temperature is higher than the upper limit temperature T0 suitable for thawing shown in Fig. 13, turn the heater 6. 7 is kept in an off state to lower the internal temperature, the necessary time is controlled to maintain the temperature range T, ~T2 suitable for thawing, and after thawing, the toast is baked in the same way as normal toast. The required time in this case naturally includes the time for the temperature inside the refrigerator to fall to a temperature range suitable for thawing, and any of the above-mentioned control methods may be used to maintain the thawing temperature.

Next, when the menu setting button 20 is operated to set a cooking other than the specific cooking, that is, usually, gratin, pizza, kutsky, or hot food other than frozen toast,
The microcomputer 51 controls the heaters 6 and 7 from the time of the cooking start operation so that the temperature inside the refrigerator reaches a predetermined temperature corresponding to the cooking that has been set. cooking is done automatically.

This can be shown in a graph as shown in FIG. 1st
In Figure 2, line P is for gratin, Q is for pizza,
R indicates the heating curve for Kutsky, and S indicates the heating curve for hot food.

Here, the cooking time for these types of cooking is determined by operating the timer setting button 19 to set the timer value. The timer value is set so that the set value increases or decreases depending on the time and number of times the button 19 is pressed, and this status is displayed on the cooking time display section 21, and the final displayed value is the timer set value. During that time, the microcomputer 51 controls the heaters 6.7 to perform each cooking process according to the predetermined internal temperature conditions. Therefore, the degree of cooking, such as the presence or absence and degree of browning, can be arbitrarily determined.

The elapse of the cooking time is displayed as a change in the remaining time by counting down the display value.

(Effects of the Invention) According to the present invention, there is a means for detecting the internal temperature, a means for setting the type of cooking, a means for setting the cooking time, and a means for controlling the cooking device according to inputs from these means. and a control means, when a specific cooking is selected, the control means causes the cooking to be performed for a cooking time set corresponding to the specific cooking based on the internal temperature-required cooking time characteristic and the current internal temperature. , when another cooking is selected, cooking is performed at a predetermined internal temperature corresponding to that cooking for a cooking time set by a cooking time setting means, the control means When a specific cooking is set by the cooking time setting means, the cooking time required for the specific cooking is determined from the relationship between the internal temperature-required cooking time characteristic and the current internal temperature given by the internal temperature detecting means. The cooking time for a specific dish can be specified and set appropriately based on the internal temperature-required cooking time characteristic based on the current internal temperature. , - Regardless of whether it is the first toast or the second toast, and regardless of the temperature inside the oven, it is possible to always successfully toast the dough.

Further, when a cooking other than a specific cooking is set by the setting means, the control means that receives the setting signal controls the heater to maintain the predetermined internal temperature corresponding to the set cooking using the temperature detection means. Since the cooking is controlled based on the internal temperature information from the cooking time setting means and the cooking is performed for the cooking time set by the cooking time setting means, cooking other than specific cooking can be done properly at the corresponding internal temperature. However, depending on the setting of the cooking time, the presence or absence and state of burntness can be arbitrarily set.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the present invention, FIG. 2 is a vertical side view of a toaster oven showing an embodiment of the present invention,
Figure 3 is a front view of a half of the one in Figure 2, Figure 4 is a vertical sectional view taken at a different position from Figure 2, Figure 5 is an exploded perspective view of the temperature sensor mounting part, and Figure 6. is the control circuit diagram, 7th
The figure is a graph showing the internal temperature of a toaster oven versus the required cooking time. Figure 8 is a flowchart showing the outline of each type of toast cooking, including normal and frozen toast that can be thawed in the case of frozen toast. Figures 9 to 13 are graphs showing the temperature control status in the case of cooking with separate thawing processes,
FIG. 14 is a graph showing the temperature control state when various types of cooking other than frozen toast are normally performed.

Claims (2)

[Claims] (1) The control means includes a means for detecting the internal temperature, a means for setting the type of cooking, a means for setting the cooking time, and a control means for controlling the cooking heater according to inputs from these. When a specific cooking is selected, cooking is performed for a cooking time set corresponding to the specific cooking based on the internal temperature-required cooking time characteristic and the current internal temperature,
A toaster oven characterized in that when another cooking is selected, cooking is performed at a predetermined internal temperature corresponding to that cooking for a cooking time set by a cooking time setting means. (2) Claim 1 that the specific cooking is toast
Toaster oven as described in section.