JPS5860127A - Heating cooker - Google Patents

Abstract

PURPOSE:To shorten cooking time by properly controlling a gas burner in the composite cooker. CONSTITUTION:With the cooker 1, a micro-computer 9 is used, a material to be heted is strongly heated by the total output of the gas burners 6a, 6b at 250- 300 deg.C and weakly heated by the output of one 6a of the gas burners at 250 deg.C according to the heating temperature of the material, and the state of finish of the cooking of the material to be heated is improved. When a door 10 is opened on the midway of heating even at 250 deg.C or lower and temperature in a heating chamber drops, temperature is rapidly recovered by the total output of the gas burners 6a, 6b, and cooking time can be shortened. Heating and cooking time can be shortened similarly because rise heating is conducted positively by the total output of the burners 6a, 6b even at any set temperature. Accordingly, cooking time can be shortened extremely because a cold starting is enabled and preheating time is omitted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a particularly effective internal temperature control device for cooking appliances such as electric open, gas open, or heater-equipped microwave ovens.

For example, in the conventional gas open system, which controls proportionally to the set temperature inside the refrigerator, the amount of gas burnt is reduced from the start of combustion, and even if the rate of rise of the temperature inside the refrigerator is adjusted somewhat, the cooking after the set temperature is not completed. The focus was on performance. For this reason, the time it takes for the inside of the refrigerator to reach the set temperature is 1, and the oven is baked as a preheating period without putting food to be heated, so that the temperature can reach the set temperature in as short a time as possible. In this example, preheating time is required, which naturally increases the cooking time.

Additionally, if the door is opened in the middle of cooking, the set temperature will drop rapidly, and heating to the set temperature will take time, which was a problem with conventional methods. .

The present invention aims to solve the above-mentioned conventional problems.

The present invention provides a heating chamber that accommodates an object to be heated, a heating device that heats the inside of the heating chamber, a heating temperature setting device that sets a heating temperature of the object to be heated, and an output that quickly controls the output of the heating device. and a control device, when the set temperature of the heating temperature setting device is set to a yeast fermentation value or higher, heating is performed at the full output of the heating device until the initially set temperature is reached;
Thereafter, in the higher range of the set temperature, heating is performed with the full power, and in the lower range, heating is performed with a part of the power,
When heating with a part of the power, the heating device is configured to heat with the full power of the heating device only when the temperature drops by a certain range from the set temperature during heating, which has an excellent effect of shortening the cooking heating time. It is something that you have.

An embodiment of the present invention will be described below based on the drawings.

In the figure, a composite cooking device 1 that has a gas open function and a microwave oven function is provided with a partition 4 on the rear wall side of a heating chamber 2 via a partition wall 3, in which hot air circulates 7 am. 6
Equipped with The gas burner 6 is provided below the hot air circulation fan 6. A magnetron 7 is installed at the top of the heating chamber 2.
is provided to supply high frequency energy into the heating chamber 2 via a waveguide 8. This composite cooking device 1 can be used as a microwave oven or as a gas open oven, and can be used simultaneously or in conjunction with each other.

Next, Figure 3 shows an outline of the gas and electricity control circuits.

In this example, during gas open heating, when setting and fixed temperature scale (not shown) is set to 2ε6℃ or less, and when 2t
The microcomputer 9 of the control device is set in advance so that the combustion control patterns of the gas burners ea and sb are differentiated depending on whether the temperature is set between 0.degree. C. and 300.degree. The configuration is such that this microcomputer 9 performs all combustion control for the gas burners 6a and 6bO.

Next, the operation at a setting of 300° C. when grilling potatoes or fish will be explained with reference to FIG.

When the object to be heated is initially put into the heating chamber 2 and the door 10 is closed, the door switch is turned on and the control device becomes operational.

Turn on the gas open switch (not shown) and! ! 11
Set the processing time and heating temperature (300°C).

Next, when the gas cock 11 is opened, the power switch 12 is turned on and the first solenoid valve 13 is turned on via the microcomputer 9.
Open for seconds. During this 40 seconds, gas flows through the gas passage 14 to the first burner 6a, and the ignition spark 16 is continuously discharged by the igniter 16, thereby igniting the first burner 6a. If the ignition does not occur within these 40 seconds, the power switch 12, the igniter 16. The first solenoid valve 13 and other components are all turned off, a buzzer is used to notify the user of this, and the user must return to the beginning and perform the operation again.

When M1 burner 8a is ignited, flame rod 1
7 to detect and display. The user then turns on a cooking start button (not shown). Then hot air circulation fan 6
starts rotating, the second solenoid valve 18 opens, and the second burner 6b is ignited from the first burner 6a, causing both the gas burners 6a and 6b to burn. The temperature inside the heating chamber 2 is the set temperature T shown in Figure 4 (outside of Figure 4).
When the thermistor 19 turns on to indicate that the temperature has reached 1, the two gas burners 6a and 6b are extinguished. When the temperature in the heating chamber 2 drops to T2 while extinguishing the fire, the ignition spark 1e starts to ignite continuously as shown in FIG.
As shown in Figure (6), first the first solenoid valve 13 opens and the first solenoid valve 13 opens.
The burner 6a is ignited, and then, after a slight time lag, the second electromagnetic valve 1a is opened, the second burner 6b is ignited, the temperature inside the heating chamber 2 is increased, and the above-described operation is repeated thereafter.

In this way, when the set temperature is between 250 and 300°C, the gas burner maintains the heating chamber at the set temperature with the maximum combustion amount. At the end of the cooking time, the gas circuit and electric circuit are automatically cut off, and the user is informed by the end buzzer.
) After confirming the completion, close the gas cock 11 and complete the cooking.

Next, when cooking cakes and the like at temperatures below 260°C (100°C to 250°C), the two gas burners 6a and 6b are first used to raise the temperature in the heating chamber 2, as described above, between 260°C and 30°C. The operation until the temperature is increased is exactly the same, but the operation after reaching the set temperature is different as follows.

That is, in heating at a set temperature of 250 DEG C. or lower, maximum combustion is achieved by the two gas bars 6a and 8b only at the first rise, and thereafter the inside of the heating chamber 2 is maintained at the set temperature by only one first burner 6a. This is as shown in FIGS. 7 to 9. In this case as well, heating will automatically stop when the cooking time ends, but if the door 10 is opened during heating, the burner 6a and timer will be temporarily interrupted, then the door 10 will be closed and the cooking will start. When you turn on the start button again, the timer will continue to count the remaining time, but
If the temperature inside the heating chamber 2 drops below the set temperature, both the gas burners 6a and eb are configured to burn at full capacity. In other words, it has a configuration that allows for extremely quick recovery. Even in this case, once the set temperature is reached, only the gas burner 6a repeats the combustion start and stop, as in the normal case.

As is clear from the above explanation, depending on the heating temperature of the object to be heated, at 260°C to 300°C, strong heating is performed using the full output of the gas burner, and at 260°C, weak heating is performed using a part of the output of the gas burner. It is possible to improve the finished state of cooking. This is because there is a difference of about 60 degrees Celsius between the hot air circulation fan's blowing temperature between strong and weak, and the texture of the surface of the heated object will be completely different for cakes, sea cream, etc. This is an effective solution.

Furthermore, if the door is opened during heating to lower than 260°C, causing a drop in the temperature inside the heating chamber, the full output of the gas burner is quickly restored, reducing cooking time.

Furthermore, at any set temperature, the initial heating is performed with the full power of the gas spanner, so the cooking time can be similarly shortened. This makes it possible to perform a so-called cold toss sheet in which the object to be heated is placed in the heating chamber before heating starts and then heating is started as in this embodiment, and the conventional preheating time can be omitted. Since the cooking time can be saved by this amount, the cooking time is greatly shortened.

Furthermore, since there is a time difference between the ignition of the first burner 6a and the ignition of the second burner 6b, a slow ignition operation is performed, and the ignition noise is low, giving the user a sense of security.

As described above, according to the present invention, regardless of the set temperature, heating is performed with the full power of the heating output at the time of initial rise, and for subsequent set temperature control, all or part of the heating output is used depending on the height of the set temperature. Since it is configured to control heating by force, even if the object to be heated is placed in the heating chamber from the beginning and a so-called cold start is performed, the rising speed is high and the overall cooking time can be shortened2. It is possible to provide an excellent heating cooker that can shorten the cooking time by 10 degrees in such a case because even if the temperature drops from the set temperature even if the temperature of the donor is opened, it will be heated with all the power. can.

[Brief explanation of the drawing]

Figures 1 and 2 are sectional views of essential parts of a composite cooker that is an embodiment of the present invention, Figure 3 is a basic configuration diagram of a control circuit consisting of a gas circuit and an electric circuit, and Figure 4N) , (B)
, (C) is an explanatory diagram of combustion control operation at the same set temperature of 260 to 300'C, Fig. 6 1/L), (B),
(C) is an explanatory diagram of the combustion control operation at the set temperature of 260° C. or lower. 2... Heating chamber, 6a, 6b... Gas burner (heating device), 9... Microcomputer, 10...
····door. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 14 Figure 5 Control ten minutes - one minute

Claims (2)

[Claims] (1) A heating chamber that accommodates an object to be heated, a heating device that heats the inside of the heating chamber, a heating temperature setting device that sets the heating temperature of the object to be heated, and an output control device that controls the output of the heating device. When the set temperature of the heating temperature setting device is set above the yeast fermentation value, heating is performed at the full output of the heating device until the set temperature is reached for the first time,
Thereafter, in the higher range of the set temperature, heating is performed at the full power, and in the lower range, heating is performed at a part of the power, and when heating is performed at a part of the power, the temperature is lower than the set temperature during heating. A heating cooker configured to apply the full output of the heating device only when the temperature range light falls. (2) When the set temperature is in the range of approximately 100°C to 250 t::, the heating device will heat at full output until the set temperature is reached for the first time, then it will heat at a partial output of the heating device, and during heating 2. The cooking device according to claim 1, wherein the cooking device is configured to heat the heating device using the full power of the heating device only when the temperature drops by a certain range from the set temperature.