JP3123382B2 - Toaster oven - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oven toaster used in ordinary households.

[0002]

2. Description of the Related Art Conventionally, a mechanical timer such as a mainspring timer and a CR timer have been generally used for setting a cooking time and a roasting time in an oven toaster. Recently, an oven toaster having a configuration in which time is displayed by using an electric display means has come to be produced due to the development of electronic technology.

FIG. 7 shows a configuration of such an oven toaster.
Shown in In FIG. 7, an operation unit provided on the right side of the main body 1 is provided with a numeric display unit 2 composed of a liquid crystal display, a light emitting diode or the like for displaying a time, The time is set in advance, and the heater in the refrigerator 5 is energized for this time to bake the food 6 and the like in the refrigerator 5.

[0004] When such an oven toaster is toasted or the like, the toast is selected by means for selecting the type of cooking in step 7, and when the start switch 8 is pressed, the internal temperature of the oven is detected, and There is also a configuration in which the optimal toasting time is determined from the internal temperature and the cooking operation is automatically terminated. Reference numeral 9 denotes a display unit composed of a light emitting diode or the like for displaying the type of cooking selected, and reference numeral 10 denotes a level setting unit for setting a finished cooking level such as the color of the toast.

[0005]

However, in the above configuration, when the user sets the time setting of the timer and turns on the heater for the set time, both the cooking time and the elapsed time are read from the numeric display. However, in the case of cooking where the time is determined after starting a toast etc., the time cannot be set in advance, so the cooking time cannot be set in advance and the user does not know until the cooking time is automatically determined. I had to use it.

For this reason, as shown in FIG. 8, a part of the segment of the numeral display section is partially lit sequentially so as to indicate the progress of the cooking operation and allow the user to estimate the time until the end. And so on. Also in this case, the actual time is not displayed, and the user has a bad use of the actual time because the actual time is unknown.

The present invention has been made to solve the above problems, and
The estimated time is displayed immediately after the start, and the time changes over time.After the cooking time is determined, the determined cooking time is displayed, and the time changes over time. user from it and go with it, and purpose to make it cooking can be grasped at any time when to end.

[0008]

One aspect of the present invention in order to achieve the above object, according to an aspect of includes a heater for heating the inside the refrigerator, heat
Relay contacts that turn the data on and off, and
Drive circuit and a temperature detection means for detecting the temperature inside the refrigerator.
To determine the step and the temperature rise rate of the internal temperature over a certain period of time
Temperature rise detecting means, cooking time determining means and storage means
Microcomputer equipped with and select the type of cooking
And the level of completion of cooking.
Level setting means for marking the heater and
Power supply voltage detection means for detecting the applied voltage and time
And first display means for indicating the cooking time.
Setting means, the temperature detecting means and the temperature rise detecting means,
The power supply voltage detecting means and the finished level setting means
From the output of the optimal cooking selected by the selection means
Determining a first cooking time, wherein the storage means stores the type of cooking;
Or at least one of the finished levels
The second cooking time determined in advance is stored in advance and cooking is started.
At times, the microcomputer may have
When the relay is operated to energize the heater,
In both cases, the type or completion of cooking is displayed on the first display means.
The storage means according to at least one of the levels
Select and read and display the second cooking time stored in
Until the first cooking time is determined by the cooking time determining means.
Now, the second cooking time is changed according to the passage of time.
And the cooking time determination means displays the first key.
After determining the processing time, the first display means displays the first
And an oven toaster for displaying the cooking time .

[0009]

According to the above means, even when a cooking operation in which the cooking time is determined after a certain time has elapsed after the start is performed, the predicted time is displayed immediately after the start, and the time changes with the lapse of time. After going and the cooking time is determined, the determined cooking time is displayed,
Since the time changes with the passage of time, the user can know when cooking is finished.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of an oven toaster showing an embodiment of the present invention. Inside of a chamber 12 of an oven toaster 11 is a heating pipe made of a coiled nichrome wire passed through a ceramic pipe. The heaters 13 and 14 are disposed, and the food placed on the grill 15 provided at an intermediate position between the heaters 13 and 14 is heated and cooked for a certain period of time. Numeral 16 is a temperature detecting means for detecting the temperature inside the refrigerator, which comprises a negative temperature coefficient thermistor.
In order to determine the cooking time, the inside temperature is detected.

[0012] Figure 2 is a block diagram of a toaster oven control apparatus according to an embodiment of the present invention, the temperature detecting means 16 for detecting the internal temperature, output to set the degree of browning of toast coming up Level setting means 17, cooking selection means 18 for selecting the type of cooking, and heaters 13 and 14 are marked.
Power supply voltage detecting means 19 for detecting a voltage to be pressurized
Is a microcomputer 2 including cooking time determination means.
0 are connected to, such as determining the cooking time is realized by a microcomputer program. Inside the microcomputer 20, there is a storage means 21,
The cooking time to be displayed in advance is stored. 22 is
Numerical display consisting of light emitting diode and liquid crystal display, etc.
This is a first display unit for displaying a time by a number. 23
Denotes a driving means for a relay connected to the output of the microcomputer, and 24 denotes a control device. Relay contact 25,
Reference numeral 26 is connected to the heaters 13 and 14, and controls energization of the heaters by turning on and off relay contacts.

FIG. 3 is a flowchart of a program showing a first embodiment of the present invention, which will be specifically described with reference to this flowchart.

In the main body configuration shown in FIGS. 1 and 2, cooking such as toast is selected by the cooking selection means 18, and when it starts, first, the relay contacts 25 and 26 are closed and the heaters 13 and 14 are energized in the first step. Next, in a second step, the temperature detecting means 16 detects the temperature t0 of the inside of the refrigerator 12 and inputs it to the microcomputer 20. In the third step, the output of the finished level setting means 17 is input.
Then, in the fourth step, the setting level of the completion level setting means 17 and the second cooking time stored in the storage means 21 corresponding to the cooking selected by the cooking selecting means 18 are read out, The read value is displayed on the display means 22 in the fifth step. In the sixth step, over time,
The cooking time displayed on the display means 22 is subtracted and displayed again. In the seventh step, it is determined whether or not 60 seconds have elapsed to measure the rate of temperature rise. After 60 seconds have elapsed, the temperature detected by the temperature detecting means 16 is input again in the eighth step, and the temperature rise detecting means 27 calculates the temperature rise rate dt in the ninth step. That is, the temperature rise rate dt is calculated based on the temperature gradient detected by the temperature detecting means. In a tenth step, the power supply voltage detecting means 19 is input, and in a eleventh step, the first cooking time Tx is set to a power supply voltage,
It is determined by calculating from the temperature rise rate and the internal temperature at the start.
Then, in the twelfth step, the determined first cooking time Tx is displayed again on the first display means 22. In the thirteenth step, similarly to the sixth step, the display time is subtracted according to the elapsed time, and the display is performed again. In the fourteenth step,
It is determined whether or not the current cooking time T has reached Tx. If the current cooking time T has reached Tx, the relay contacts 25 and 26 are opened in a fifteenth step to stop energizing the heaters 13 and 14, and then the display means 22 is displayed in a sixteenth step. Is turned off to end the cooking operation.

FIG. 4 is a flowchart of a program showing a second embodiment of the present invention, which will be specifically described below.

In the main body configuration shown in FIGS. 1 and 2, when cooking other than toast is selected by the cooking selecting means 18 and cooking is started, the relay contacts 25, 2 are set in a first step.
6 is closed and the heaters 13 and 14 are energized. Next, in a second step, the temperature detecting means 16 detects the temperature t0 of the inside of the refrigerator 12 and inputs it to the microcomputer 20. In the third step, the finished level setting means 17 is input. Then, in the fourth step, the setting level of the completion level setting means 17 and the second cooking time stored in the storage means 21 corresponding to the cooking selected by the cooking selecting means 18 are read out. The read values are displayed on the first display means 22 in five steps. In the sixth step, over time,
The second cooking time displayed on the first display means 22 is subtracted and displayed again. In the seventh step, it is determined whether or not a constant temperature determined by cooking during operation has been reached. If not, it returns to the level before the sixth step. When the temperature in the refrigerator reaches the determination level, in an eighth step, the optimum first cooking time Tx determined by cooking is stored in the storage means 2.
Read from 1 and determine the cooking time. In the ninth step, the determined first cooking time is displayed again on the first display means 22. In the tenth step, similarly to the sixth step, the display time is subtracted according to the elapsed time, and the display is performed again. In an eleventh step, it is determined whether or not the current cooking time T has reached Tx. If the current cooking time T has reached, the relay contacts 25 and 26 are opened in a twelfth step, and the energization of the heaters 13 and 14 is stopped. First display means 22 in step
Is turned off to end the cooking operation.

Further, a step is provided between the fourth step and the fifth step in the flow chart of FIG. 4 where the cooking time read from the storage means 21 is immediately set as the fixed time when the internal temperature is higher than the predetermined temperature. Is also good.

Further, a step of blinking the display may be provided between the sixth step and the seventh step, which are the periods during which the scheduled time in the flowcharts of FIGS. 3 and 4 is displayed.

FIG. 5 is an external view of a display section of an oven toaster showing one embodiment of the present invention. Second display means 2
Reference numeral 8 denotes light emitting diodes 23 and 24. When displaying the second cooking time first <br/> display unit 22 turns on the light emitting diode 23 in the vicinity that displays the expected time.
When the determined cooking time is displayed, the light emitting diode 24 near the displayed cooking time is turned on. Characters such as the estimated time and the determined time may be displayed at each time using a liquid crystal display other than the light emitting diode. This light emitting diode or the like is referred to as status display means.

FIG. 6 is a partial sectional view of a display section of an oven toaster showing an embodiment of the present invention. Light emitting diodes 25 and 26 of different colors are arranged behind the first display means 22 composed of a transmissive liquid crystal display, and when the predicted second cooking time is displayed, light emission is performed. When the diode 25 and the determined first cooking time are displayed, the light emitting diodes 26 are respectively turned on, and the colors of the display of the estimated time and the determined time are made different. Emitting diodes, lamps, may be used a surface fluorescent emitters, the first display unit 22 itself 2
It may be a light emitting diode of a color.

[0021]

According to the present invention, even when a cooking operation in which the cooking time is determined after a certain time has elapsed after the start is performed, the predicted time is displayed immediately after the start,
That the time changes over time,
After the cooking time is determined, the determined cooking time is displayed, and the time changes with the elapse of time, so that the user can know when cooking is finished.

The cooking time displayed in advance is displayed in a blinking manner, and is displayed separately from the determined cooking time, thereby increasing the user's awareness of the time up to the end of cooking and improving the usability. Goes up.

[0023] Then, when the cooking schedule time to be displayed in advance, to display that it is a scheduled time, when the determined cooking time, by displaying that it is a definite time,
The user's awareness of the time until the end of cooking deepens,
Usability rises.

Furthermore, by displaying the color of the display of the estimated cooking time displayed in advance and the color of the display of the determined cooking time as different colors, the user can recognize the time until the end of the cooking. Deepens and increases usability.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an oven toaster according to one embodiment of the present invention.

FIG. 2 is a block diagram of an oven toaster according to one embodiment of the present invention.

FIG. 3 is a flowchart of a program according to the first embodiment of the present invention.

FIG. 4 is a flowchart of a program according to a second embodiment of the present invention;

FIG. 5 is an external view of a display unit of an oven toaster according to a third embodiment of the present invention.

FIG. 6 is a partial sectional view of a display unit of an oven toaster according to a fourth embodiment of the present invention.

FIG. 7 is an external view of a conventional oven toaster.

FIG. 8 is an external view of a display section of a conventional oven toaster.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 12 Inside compartment 13, 14 Heater 16 Temperature detection means 17 Completion level setting means 18 Cooking selection means 19 Power supply voltage detection means 20 Microcomputer 21 Storage means 22 First display means 25, 26 Relay contact 27 Temperature rise detection means 28 Second Display means

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24C 7/04 301 A47J 37/08

Claims (6)

(57) [Claims] A heater for heating the inside of the storage ;
Relay contacts and drive circuits that operate the relays
And a temperature detecting means for detecting a temperature in the refrigerator, and a constant
On the temperature to determine the temperature rise rate of the internal temperature over time
It has rise detecting means, cooking time determining means and storage means.
Microcomputer and selection of cooking type
Selection means and an output for setting the finished cooking level
An incoming level setting means, and an electric power applied to the heater.
Power supply voltage detecting means for detecting voltage and for displaying time
And the first display means, wherein the cooking time determination means,
The temperature detecting means, the temperature rise detecting means, and the power supply
The output of the pressure detection means and the completion level setting means
The first cooking optimal for the cooking selected by the selection means.
Determine the time, and the storage means stores the type or
Determined according to at least one of the up levels
The second cooking time is stored in advance, and when cooking is started,
The microcomputer uses the drive circuit to control the relay.
Operating the heater to control the energization of the heater,
The first display means indicates the type of cooking or the level of completion.
At least one of the storage means according to one of the storage means
A second cooking time is selected, read out and displayed, and
Until the first cooking time is determined by the interval determining means.
Table while changing the cooking time of 2 according to the passage of time
The cooking time determination means determines the first cooking time.
After the setting, the first display means displays the first cooking time.
Oven toaster to display . 2. A heater for heating the inside of the refrigerator, and a heater for turning the heater on and off.
Relay contacts and drive circuits that operate the relays
And temperature detection means for detecting the temperature in the refrigerator, and cooking
Microcomputer provided with time determination means and storage means
And a selection means for selecting the type of cooking, and
Finishing level setting to set the finishing level
Means and a power supply for detecting a voltage applied to the heater.
Pressure detection means, and first display means for displaying time.
And the cooking time determining means includes the temperature detecting means
The power supply voltage detecting means and the finished level setting means
From the output of the optimal cooking selected by the selection means
Determining a first cooking time, before Symbol storage means, the type of cooking
Or at least one of the finished levels
The second cooking time determined in advance is stored in advance and cooking is started.
At times, the microcomputer may have
When the relay is operated to energize the heater,
In both cases, the type or completion of cooking is displayed on the first display means.
The storage means according to at least one of the levels
Select and read and display the second cooking time stored in
Until the first cooking time is determined by the cooking time determining means.
Now, the second cooking time is changed according to the passage of time.
And the cooking time determination means displays the first key.
After determining the processing time, the first display means displays the first
Oven toaster that displays cooking time . 3. The method according to claim 1 , further comprising the steps of:
Selection from the detection means and the output of the completion level setting means.
First cooking time determined by cooking selected by the selection means
Is stored in the storage means in advance, the cooking time determination
When the stage immediately reads the first cooking time from the storage means,
The first display means displays the first cooking time.
The oven toaster according to claim 2, wherein 4. The second cooking time is displayed blinking and is confirmed.
The display of the first cooking time is a lighting display.
The oven toaster according to claim 2 . 5. The method according to claim 1 , wherein the cooking time is a second cooking time or a first cooking time.
The second display means for displaying whether or not is displayed
The second display means has a first key and a second key.
When displaying the actual time, indicate that it is the scheduled time,
Confirm when the first display means displays the first cooking time
Claim 1 or claim to indicate that it is time
Item 2. The oven toaster according to item 2 . 6. A first display means for displaying a second cooking time.
And when displaying the determined first cooking time
Means that the display color of the first display means is made different.
The oven toaster according to claim 1 or claim 2 or claim 4 .