JPH045921Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Technical Field> The present invention relates to a cooking device having an oven heating function, and more particularly, to one that shortens oven heating time.

<Prior Art> In a conventional cooking device having an oven heating function, such as an oven range, once a set temperature is reached after starting oven heating, the set temperature is maintained for a set heating time to perform oven cooking.

<Problems to be solved by the present invention> The conventional method had the disadvantage of requiring a long oven cooking time.

<Means for solving the problem> A temperature sensor 8 that detects the internal temperature of the oven, and a timer that measures the first time (T ₁ ) from the start of oven heating until the set heating temperature A°C is reached. ,
a calculation means for calculating a second time (T ₂ ) from an arithmetic expression that is a function of the time (T ₁ ); and a calculation means for calculating a second time (T 2 ) from a calculation formula that is a function of the time (T 1 ), and a set heating during the second time (T ₂ ) after reaching the set heating temperature A°C. Heating is controlled to a predetermined temperature α℃ higher than the temperature A℃, and the remaining time (T ₀ - T ₁ ) of the set heating time (T ₀ ) is
-T ₂ ), a heating control means is provided to control heating to a set heating temperature A°C.

<Function> During the second time _T2 calculated by the calculation means after reaching the set heating temperature A°C, heating is controlled to a predetermined temperature α°C higher than the set heating temperature A°C for oven cooking, so that the surface is You can shorten the oven cooking time without over-burning.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

Fig. 1 is an internal temperature time chart for explaining the present invention, Fig. 2 is a schematic front view of a microwave oven which is an embodiment of the present invention, and Fig. 3 is a main electrical part of the microwave oven shown in Fig. 2. Circuit block diagram, 4th
The figure is a flowchart of oven heating control according to the present invention.

An operation panel 1 disposed on the front side of the microwave oven shown in FIG. 2 is provided with an oven key 2, a heating temperature setting key 3, a timer 4 for setting a heating time, and a heating start key 5.

In FIG. 3, numeral 6 is a microcomputer consisting of RAM, ROM, and CPU, and performs timekeeping processing, arithmetic processing, comparison judgment processing, etc. based on a programmed heating sequence, and numeral 7 is an interface. 8 is a thermistor that detects the temperature inside the oven, and 9 is an A/D converter that converts an analog signal output from the thermistor 8 into a digital signal. Reference numeral 10 denotes a heater energization relay that controls the energization of the heater 11, and the microcomputer 6 inputs the internal temperature detection signal of the thermistor 8 and compares and determines the internal temperature with the heating standard temperature, so that the internal temperature becomes the heating standard temperature. The energization is controlled as follows.

Next, oven heating control according to the present invention in the microwave oven having the above configuration will be explained based on the flowchart shown in FIG.

First, put the object to be heated into the oven, and press the oven key 2, heating temperature setting key 3, and timer 4 on the operation panel 1.
Enter the set heating temperature A°C and set heating time (T ₀ ) for oven cooking determined by the menu and quantity. When the heating start key 5 is pressed to start oven heating, the heater 11 and the convection fan (not shown) are energized and the timer in the microcomputer 6 starts measuring time. Eventually, the temperature inside the refrigerator rises, and the microcomputer 6 compares and determines whether the temperature detected by the thermistor 8 has reached the set heating temperature A°C, and if it has reached the set heating temperature A°C, the time required from the start of heating to reach the set heating temperature A°C is determined. First time (T ₁ )
is measured and memorized. Then _, the first time (T 1 ) is substituted into the calculation formula T ₂ =aT ₁ +b stored in advance in the microcomputer 6, and the second time (T ₂ ) is calculated by the calculation means in the microcomputer 6. Ru. Then, based on the oven heating sequence in the microcomputer 6, the internal temperature is heated to a temperature higher than the set heating temperature A°C by α°C for the second period of time ( _T2 ). When the temperature inside the refrigerator is controlled to (A+α℃) and (T ₂ ) time has elapsed, the remaining time (T ₃ = T 3 ) of the set heating time (T ₀ )
T ₀ −T ₁ −T ₂ ) is calculated, and during the remaining time T ₃ ,
The temperature inside the refrigerator is controlled to be the set heating temperature A°C.
Then, when the remaining time (T ₃ ) has elapsed, the oven heating cooking ends.

In addition, the constant a of the above calculation formula (T ₂ = aT ₁ + b),
b, and the temperature α°C higher than the set heating time A°C.
is the internal temperature (A + α) ℃, change α every 10℃,
This temperature is a predetermined value determined through an experiment conducted using this temperature as a parameter while checking the degree of scorching, swelling, etc. of the object to be heated, as shown in FIG.

During the time _T2 in Fig. 5, the object to be heated is heated while checking the degree of burntness and swelling of the object.
This is the time taken to achieve a finish of 80-90%.

As mentioned above, by increasing the temperature during the first half of oven cooking, the heating time can be shortened without further burning the surface of the food.

For example, in the case of cream puff, when cooking was conventionally done at a set heating temperature of 190°C, the set heating time was about 25 minutes, but if it is made with the present invention, the set heating time is as shown in Figures 6 and 7. As shown in the figure, first heat at the set heating temperature of 190°C for about 10 minutes and 30 seconds, then heat at the set heating temperature of 210°C for about 7 minutes, and finally set the heating temperature at 210°C.
Cream puff is created by heating at 190℃ for about 4 minutes, and the total heating time is about 21 minutes and 30 seconds, which is shorter than conventional methods.

In addition, in the case of roll bread, the conventionally set heating temperature
When cooking at 180℃, the set heating time is approx.
If the product that takes 18 minutes is the one of this invention, first set the heating temperature as shown in Figures 6 and 8.
Heat at 180℃ for about 8 minutes 30 seconds, then set heating temperature 200
℃ for about 5 minutes, and finally at the set heating temperature of 180℃ for about 1 minute, the rolls are completed, and the total heating time is about 14 minutes and 30 seconds, which is shorter than conventional methods. be able to.

<Effects> According to the oven heating control of the present invention, the oven cooking time can be shortened without excessively burning the surface of the food.

[Brief explanation of the drawing]

Fig. 1 is an internal temperature time chart for explaining the present invention, Fig. 2 is a schematic front view of a microwave oven which is an embodiment of the present invention, and Fig. 3 is a main electrical part of the microwave oven shown in Fig. 2. Circuit block diagram, 4th
The figure is a flowchart showing the oven heating control of the present invention, and Figure 5 is the calculation formula of the present invention (T ₂ = aT ₁ + b)
Fig. 6 is a relational diagram showing the set heating temperature and setting heating time when heating the cream puff and roll bread according to the present invention. Internal temperature time chart showing when cooking.
FIG. 8 is a time chart showing the internal temperature during cooking of the bread roll according to the present invention. Code, 6...Microcomputer, 8...Thermistor, 1
0...Relay for energizing the heater.

Claims (1)

[Scope of utility model registration request] In a cooker having an oven heating function, a temperature sensor that detects the internal temperature, a timer that measures a first time (T ₁ ) from the start of oven heating until reaching a set heating temperature A° C., and the above-mentioned a calculation means for calculating a second time (T ₂ ) from a calculation formula that is a function of time (T ₁ ); and a set heating temperature A°C.
During the second time period (T ₂ ) after reaching , the heating is controlled to a temperature that is a predetermined temperature α°C higher than the set heating temperature A°C, and the remaining time (T ₀ −T ₁ − ) of the set heating time (T ₀ ) is maintained.
A cooking appliance characterized in that it is equipped with heating control means for controlling heating to a set heating temperature A° C. during the period T ₂ ).