JPH0728831B2 - toaster - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a toaster, such as an oven toaster, which cooks normal toast and frozen toast in one refrigerator.

(Prior Art) In the case of an oven toaster, the baking color is adjusted depending on how the toast cooking time is set.

In this case, the toast cooking time is freely set and the baking color is set so that the baking color can be adjusted according to the taste of the cook.

(Problems to be Solved by the Invention) However, in the actual toast cooking, the baked color as set may not be obtained.

When the toast cooking is continuously performed, the baking color changes due to the increase in the inside temperature, and the baking color also changes depending on the season and the region when the inside temperature at the start of the toast is different.

It is necessary to adjust the burn color sufficiently corresponding to the difference in the internal temperature. In addition, even when a frozen toast other than the normal toast is heated, it is desirable to control the heating of the heater so as to maintain a predetermined low temperature heating state predetermined for a certain period of time.

The present invention, regardless of such continuous baking, discontinuous baking, can achieve toast cooking according to the set baking color depending on the difference in the internal temperature at the start of the toast, and even when the frozen toast is heated, it is frozen. It is an object to provide a toaster that can be heated at a temperature corresponding to toast.

(Means for Solving the Problems) In order to achieve the above object, as shown in FIG. 1, an in-compartment temperature detecting means for detecting the in-compartment temperature and cooking of normal toast and frozen toast are individually set. Means, a baking color setting means for setting the baking color of the toast, and a cooking time preset according to the current inside temperature detected by the inside temperature detecting means at the start of the normal toast and the baking color setting means. Automatically set, toast heating control means for performing toast cooking while energizing the heater at full power for the set cooking time, and when the frozen toast is set, the heater is set in the same manner as the normal toast corresponding to the frozen toast. Defrosting heating control means for heating and controlling the heater so as to maintain a predetermined low temperature heating state for a certain period of time before energizing with full power is provided. Is.

(Operation) In the above-described configuration of the present invention, when performing normal toast cooking, the burn color desired by the cook can be set by the burn color adjusting unit A, and the control unit C can be used when starting toast cooking.
Depending on the inside temperature detected by the detection means E and the burn color information set by the burn color adjusting means A,
A preset cooking time is automatically set, and the toast cooking is performed by energizing the heater at full power for the set time. It is possible to prevent the set color from being affected. Moreover, since the influence of improper setting is eliminated by eliminating the artificial setting of the cooking time, the toast cooking as described above can be performed without the trouble of operation and erroneous operation, and the capacity of the heater can be supplied by the full power supply. This can be achieved with a full energization.

In particular, even when the frozen toast is heated, the heater is controlled so as to maintain a predetermined low temperature heating state for a certain period of time before starting the normal baking in which the heater is energized at full power. As in the case of normal toast, it is baked from full power by energizing from the beginning, and it is possible to eliminate the inconvenience that the surface burns before it is thawed and heat does not easily reach the inside. be able to.

(Embodiment) A first embodiment of the present invention shown in FIGS. 2 to 6 will be described. This embodiment shows the case of performing either normal toast for cooking normal bread or frozen toast for frozen bread. Note that the baking of gratin, pizza, cookies, and the heating of cooked foods can be done automatically by the control of a microcomputer (hereinafter referred to as "microcomputer") for cooking. It also shows the case of an oven toaster in which microcomputer control is performed so that a toast according to the baking color setting can be obtained separately according to the setting of 1 or 2 sheets.

As shown in FIGS. 2 to 4, the body 1 is provided with an operation / control section 3 on one side of a cooking cabinet 2. A door 4 having a transparent window 4a is provided at the front of the cooking cabinet 2, and a lower edge of the door 4 is connected to the body 1 by a hinge 5 so as to be opened and closed. Inside the cooking cabinet 2, heaters 6 and 7 are provided in an upside down state. A net-like cooking table 8 for receiving food is provided between the heaters 6 and 7, and a mechanism (not shown) interlocks with the opening and closing of the door 4 to move in and out of the cooking cabinet 2.

At the bottom of the operation / control part 3, a power supply circuit 12 equipped with a power supply circuit 35 for driving the heaters 6, 7 and the like and peripheral electric devices is attached to a downward facing case 13 through a synthetic resin base 14 under a ceiling part. is there. The operation panel 15 is on the front of the operation / control unit 3.
Is provided. From the bottom of the operation panel 15, a power switch button 16, a baking color adjustment knob 17, simultaneous baking number setting buttons 28, 29, a cooking start / end button 18, a timer setting button 19 for setting the cooking time, and a cooking type are set. A menu setting button 20 is provided, and a cooking time (timer) display unit 21 and a normal toast display unit 22 and a frozen toast display unit according to the type of cooking to be set are further provided above the menu setting button 20.
23, gratin display 24, pizza display 25, cookie display
26 and a warming object display section 27 are provided respectively.

At the back of the operation panel 15, a microcomputer 51 for controlling the heaters 6 and 7 and a microcomputer board 52 equipped with its peripheral electric equipment are arranged, and a back plate 53 on the back of the operation panel 15 is provided with a synthetic resin base.
It is attached via 54.

As shown in the control circuit of FIG. 6, the operation section and the display section on the operation panel 15 are an operation circuit block 31, a 7-segment 4-digit cooking time display circuit block 32, a menu display circuit block 33, and a toast. In this case, the burn color adjustment volume 34 linked with the burn color adjustment knob 17 and the simultaneous burn number setting buttons 28 and 29 are individually operated by a microcomputer.
Connected with 51. Furthermore, the microcomputer 51 has a power supply circuit 3
5, clock oscillation circuit 36, control circuit 37 for heaters 6 and 7,
A temperature sensor 38 for detecting the temperature inside the cooking cabinet 2 and a buzzer 46 are also connected.

As shown in FIGS. 2 and 5 , the temperature sensor 38 is held on the lower end tubular portion 41a of a sensor holder 41 made of aluminum, and the sensor holder 41 is folded into two pieces 42a, 42c of an elastic clip 42. It is elastically sandwiched between the side plates 43 of the cooking cabinet 2 in close contact with the back surface thereof. For this sandwiching, a slit 44 is opened in the side plate 43 of the cooking cabinet 2 and a piece 42 of the clip 42 is formed.
The c can be inserted into the cooking cabinet 2 from the back side of the side plate 43. In this inserted state, the bulged portion 42b of the two-folded portion is contacted with the back surface of the upper wall 43a above the slit 44 of the side plate 43 so that the one piece 42c is brought into close contact with the surface of the lower wall 43b to further stabilize the insertion state. is there. As a result, the heat in the cooking cabinet 2 passes through the side plate 43 and the sensor holder 41, and the temperature sensor 38
It is easy to be transmitted to.

A series of controls will be described below. Menu setting button
When 20 is operated, the type of cooking changes to normal toast, frozen toast, ... with automatic control. This change in the type of cooking is displayed externally by changing the lighting position of each display unit corresponding to them. Therefore, the predetermined cooking setting is performed by operating the menu setting button 20 so that the corresponding display section lights up.

If the normal toast is set now, the microcomputer 51 sets the cooking time of the normal toast from the temperature information in the cooking cabinet 2 at that time and the characteristics of the internal temperature-necessary cooking time, and the cooking start / end button 18 is pressed. After the cooking start operation (start and end change alternately with each press), the heater 6,
7 is kept in the ON state, that is, the heaters 6 and 7 are kept in the full-power energized state with the full capacity, and the normal toast cooking for the set time is performed.

The characteristics of the in-compartment temperature-required cooking time are known in advance as shown in the graph of FIG. So this is
It is stored in ROM and the cooking time required at that time can be known depending on how many times the temperature inside the storage cabinet is, and it is necessary to successfully achieve the set normal toast from the temperature conditions inside the storage cabinet. The cooking time can be set easily and appropriately. The cooking time is set in this way,
In the case of baking only once or in case of baking many times in succession, it is possible to always obtain the same normal toast regardless of different temperature conditions in the refrigerator.

Here, the operating position of the burn color adjustment knob 17 determines the set value of the burn color adjustment volume 34. In the state of the figure, moving the knob 17 to the light display side on the left side of FIG. 3 makes the baked state lighter, and moving it to the dark display side on the right side makes the baked state darker.

For this reason, the microcomputer 51 corrects and uses the characteristics of the inside temperature-necessary cooking time according to the burning color setting by the burning color adjustment knob 17, and when set to the light side, the required cooking time becomes short,
When it is set to the dark side, control is performed so that the required cooking time becomes longer.

The amount of heat consumed differs depending on whether only one toast or two are toasted, which affects the lightness and shade of the baked state. By operating either one of the simultaneous burning number setting buttons 28 and 29 with the saw, the microcomputer 51 is inputted whether to burn one or two. With this input, the microcomputer 51 further corrects the characteristics of the temperature inside the chamber-required cooking time and uses it so that the required cooking time becomes longer in the case of baking two sheets than in the case of baking one sheet.

As described above, the toast can be obtained with the burned color according to the setting regardless of whether one sheet is baked or two sheets are baked.

Note that the automatic toast as described above can be artificially stopped by ending the cooking start / end button 18. In the case of manual baking, take out properly while checking the degree of burning.

Next, when the frozen toast is set, the microcomputer 51 is in the automatic control flow as in the case of the normal toast,
Normally, the low-temperature heating state in which the frozen bread is thawed before starting the baking and heating is controlled so as to be maintained for a certain period of time.

By performing such a treatment, when the frozen bread is baked from the beginning with full power normal as in the case of normal toast, it is thawed quickly and the surface is burnt and heat does not reach the inside. can do.

As such a thawing process, when the frozen toast is performed in the early stage of use of the oven toaster, the thawing process time is set during the rise of the internal temperature to a predetermined cooking temperature from the start of cooking. The eighth as one of the forms
As shown in the graph of the figure, during the thawing time after the start of cooking, the heaters 6 and 7 are turned on and off for a certain short period of time to obtain a wavy temperature rise state, and while the temperature inside the refrigerator does not exceed the thawing upper limit temperature T _0. After the thawing process is completed and the thawing process time has elapsed, the heaters 6 and 7 are kept in the ON state with full power for the same time as in the normal toast.

Next, by operating the menu setting button 20, cooking other than the specific cooking, that is, normally, other than each frozen toast gratin,
When any of the cooking types other than pizza, cookies, and warm toast is set, the microcomputer 51 uses the means for detecting the temperature inside the oven used for adjusting the toast heating color to set the setting. Since the heaters 6 and 7 are controlled to start the cooking from the time when the cooking is started so as to reach the predetermined internal temperature corresponding to the type of cooking that has been performed, the temperature suitable for the cooking can be set only by setting the cooking. Cooking is done automatically.

This can be shown in a graph as shown in FIG.

In FIG. 9, the line P indicates the heating curve in the case of gratin, Q in the case of pizza, R in the case of cookie, and S in the case of warm food.

Here, the cooking time in the case of these cooking is performed by operating the timer setting button 19 and setting the timer value.
The set value of this timer value is set to up or down depending on the time and number of times while the button 19 is pressed, the state is displayed on the cooking time display section 21, and the final display value is the set value of the timer. For that time, the microcomputer 51 controls the heaters 6 and 7 so as to perform each cooking under the predetermined temperature condition in the refrigerator. Therefore, the degree of cooking can be arbitrarily determined, such as the presence or absence and the degree of browning.

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

In the second embodiment of the present invention shown in FIG. 10, the burn color setting knob 17 and the simultaneous burn number setting button 2 are used.
The CR timer circuit 61 obtains a predetermined cooking time corresponding to the setting of the number of simultaneous bakings by 8 and 29.

As shown in the figure, the CR timer circuit 61 has a capacitor 62 connected in series with a baking color adjustment variable resistor 63 that is adjusted by the baking color adjustment knob 17, and is further provided with a switch for the one-baking setting button 28 and for one-baking. 1-sheet baking adjustment circuit in which fixed resistors 64 of 2 are connected in series, and a 2-sheet baking setting button 29 switch and 2
A two-plate baking adjusting circuit in which a fixed resistor 65 for baking the plate is connected in series is connected in parallel as shown in the figure.

Thus, for example, when the one-baking setting button 28 is pressed, the resistors 63 and 64 are connected to the condenser 62 to form a CR timer circuit, and the CR for the required cooking time corresponding to the baking color setting and one-baking is set. Obtain the time constant and control the energization time of the heater. When the double-baking setting button 29 is pressed, the resistors 63 and 65 are connected to the condenser 62 to form a CR timer circuit, and the CR time constant for the required cooking time corresponding to the baking color setting and double baking is set. Then, the energization time of the heater is controlled.

FIG. 11 shows the third embodiment of the present invention, and the second embodiment
In the case of the above embodiment, one of the resistors arranged in parallel is omitted to adjust the energization time in the case of one-sheet baking and two-sheet baking.

FIG. 12 shows a fourth embodiment of the present invention,
In the case of the embodiment described above, the two resistors arranged in parallel are replaced by two capacitors 71 and 72 having different capacities, the other capacitors are omitted, and one plate is burned by using the variable resistor 63 and the capacitor 71 or 72 in combination. And the energizing time in the case of baking two sheets is adjusted.

In the case of the above-described embodiment, the burn-up state depending on the color adjustment and one-sheet or two-sheet baking is adjusted only by the heater energization time. It can also be performed by adjusting the temperature inside the refrigerator. Moreover, it is also possible to use them together with the adjustment of the energization time. Further, the simultaneous baking number setting may be switched and set by one member.

(Effects of the Invention) According to the present invention, when starting toast cooking, a predetermined cooking time is automatically set according to the temperature inside the refrigerator and the set baking color information. The torch cooking is performed by energizing the heater with full power for a certain period of time, and when the toast is started, the difference in the temperature inside the chamber depending on the season, the region, or the number of continuous baking is prevented from affecting the set baking color. Therefore, it is possible to obtain the toast having the baked color according to the setting regardless of the reason why the temperature inside the refrigerator at the time of starting the toast is different for any reason. Moreover, since the influence of improper setting is eliminated by eliminating the artificial setting of the cooking time, the toast cooking as described above is not a cooking failure due to the setting time of the cooking time or an erroneous operation, Moreover, it is possible to achieve the shortest time by energizing the heater with the full capacity by energizing the full power.

In particular, even when the frozen toast is heated, the heater is controlled so as to maintain the predetermined low temperature heating state for a certain time during the normal baking in which the heater is energized at full power. As in the case of normal toast, it is baked from full power by energizing from the beginning, and it is possible to eliminate the inconvenience that the surface burns before it is thawed and heat does not easily reach the inside. be able to.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of the present invention, FIG. 2 is a vertical sectional side view of an oven toaster showing an embodiment of the present invention, and FIG. 3 is a front view of a half portion of the one shown in FIG. FIG. 4 is a vertical cross-sectional view taken at a position different from that of FIG. 2, FIG. 5 is an exploded perspective view of the temperature sensor attachment, FIG. 6 is a control circuit diagram, and FIG. 7 is a toaster oven. Fig. 8 is a graph showing the characteristics of the temperature inside the chamber-required cooking time, Fig. 8 is a graph showing the temperature control state of each normally frozen toast cooking that enables defrosting in the case of frozen toast, and Fig. 9 is a graph showing other than toast. Graphs showing the temperature control state in the case of performing various cooking, FIGS. 10, 11, and 12 are the second, third, and fourth aspects of the present invention.
A circuit diagram showing an embodiment of the above, in the figure, A ... Burning color setting means, C ... Control means, D ... Heater, E ... In-compartment temperature detection means

Continuation of the front page (56) References JP-A-60-145114 (JP, A) JP-A-60-145113 (JP, A) JP-A-47-4682 (JP, A) JP-A-61-138033 (JP , A) JP 61-265426 (JP, A) JP 61-291837 (JP, A) Actually opened 50-12963 (JP, U) Actually opened 61-192206 (JP, U) Actually opened 50-121859 (JP, U)

Claims (1)

[Claims] 1. An inside temperature detecting means for detecting an inside temperature,
Means for individually setting cooking of normal toast and frozen toast, and burn color setting means for setting the burn color of the toast,
Normally, a preset cooking time is automatically set according to the current inside temperature detected by the inside temperature detecting means at the start of the toast and the baking color setting means, and the heater is energized at full power for the set cooking time. While controlling the toast heating control means for performing toast cooking, and when a frozen toast is set, a predetermined low-temperature heating state corresponding to the frozen toast is kept constant before the heater is energized at full power as in the normal toast. A toaster, comprising: a thawing and heating control means for heating and controlling the heater so as to keep the time.