JPS61239597A - High frequency heater with oven - 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
1. The present invention relates to a high-frequency heating device with a ceiling fire.
', which relates to automatic control of heating cooking.

In general, when cooking with an additional heat cooker, the so-called O7.7 is used.
To cooking and food. Browning occurs during cooking □
There are two types of so-called grill cooking. As shown in FIG. 6, only oven plate 1 is used during oven cooking.

On the other hand, when grilling, place the
Place one foot of high slatted grid 2 and place the object to be heated 3 on top of it.
By placing the electric heater 4 closer to the electric heater 4, the heating efficiency can be increased and the object 3 to be heated can be browned.

On the other hand, the operation panel 5 displays the cooking time and type.
1 display tube 6, key 7 for selecting high frequency control,
There are a key 8 for selecting oven cooking, a key 9 for selecting grill cooking, a time setting volume 10, and a cooking temperature setting volume 11 for inputting the control temperature of the heating chamber 12. To do so, select and input key 8, and then set the cooking time and cooking temperature using volume 10.11.In the case of grill cooking, select and input key 9. In addition to the conventional example shown in FIG. 6, there is also a conventional example in which the height of the oven dish 1 is appropriately changed without using the foot-height grating 2.

Problems to be Solved by the Invention However, with such conventional high-frequency heating cookers with a ceiling fire, the user must select and input whether to cook in the oven or on the grill. Furthermore, the user must perform an operation to change the height at which the open plate is placed, which makes the user feel complicated and bothered.

The present invention solves these conventional problems and realizes simplified operation, improved cooking performance, safety, and energy savings.

Means for Solving the Problems The high-frequency heating device with a skylight of the present invention includes a heating means disposed in the upper part of the heating chamber, a heating chamber partition plate that partitions the heating chamber into at least two lower chambers, and a heating chamber partition plate that divides the heating chamber into at least two lower chambers. A means for detecting temperature; a control section for controlling heating to the heating chamber based on information from the temperature detecting means;
and means for determining the presence or absence of the heating chamber partition plate and inputting the presence/absence information to the l-1 control section.

Function: The high-frequency heating device with a ceiling fire of the present invention detects the temperature rise value based on the temperature information from the temperature detection means of the heating chamber, thereby identifying the presence or absence of a heating chamber partition plate, and also identifying the type of cooking. The system automatically changes the cooking pattern and conditions to the optimum value based on the knowledge.

EXAMPLE Hereinafter, a high-frequency heating device with a ceiling flame according to an example of the present invention will be described with reference to the drawings. As shown in FIG. 1, the heating chamber is divided into two spaces, a two-part heating chamber 12a and a lower heating chamber 12b, by a heating chamber partition plate 14. A thermistor 5 attached to the heating chamber wall of the upper heating chamber 12a detects the atmospheric temperature within the heating chamber.

Now, let's talk about the operations when cooking on the grill. First, the heating chamber partition plate 14 is inserted into the heating chamber by passing through the support rails 24 formed at the center of both side walls of the heating chamber. As a result,
The heating chamber is divided into two, the above-mentioned upper heating chamber 12a and lower heating chamber 12b.

Next, the object to be heated 3 is placed on the heating chamber partition plate 14 . After this, the key 8 for selecting oven cooking on the operation panel 5
Press , set the cooking time using the cooking time setting volume 11, and then start cooking. Once cooking starts,
The cooking time displayed on the display tube 8 is counted down in 1 second or 1 minute increments. Just then, the electric heater 4 starts to generate heat... Bow 1. Ru. The change in the atmospheric temperature inside the heating chamber at this time is shown in Figure 2, □. Graph □ shows the temperature change when the heating chamber partition □ and 1'' cutting plate 14 shown in FIG.

As shown in Fig. 2, the time it takes for the atmosphere in the heating chamber to reach 150°C is approximately 7 minutes when the heating chamber partition plate 14 is installed, and approximately 11 minutes when it is not installed. I understand that. Therefore, the difference in time required for the atmospheric temperature in the heating chamber to reach 150°C will vary.

The cooking mode can be automatically identified by determining the presence or absence of the heating chamber partition plate 14.

Based on this, in the above-mentioned cooking, since the heating chamber atmospheric temperature reached 150'C in about 7 minutes from the start of cooking, the control unit determined that the heating chamber partition plate 14 was installed in the grill cooking mode. After that, the control temperature is automatically set to 250° C. and the heating of the object to be heated is continued. Then, for a certain period of time after the ambient temperature reaches 250° C., cooking is performed using both high frequency heating and heating using an electric heater.

1J Figure 3 is a block diagram of an example of the control circuit.
Indicated by ゛. The chamber atmosphere detection thermistor 22 constitutes a voltage dividing circuit with a voltage dividing resistor 23, and uses a resistance change corresponding to a temperature change as a voltage signal to be transmitted to the microcomputer 1.
Enter 7. The microcomputer 17 has a built-in analog-to-digital conversion function, and converts the input voltage signal into a constant digital signal. This digital signal is processed according to a processing procedure stored in advance to determine the presence or absence of the heating chamber partition plate 14, and also determine and control subsequent cooking patterns. A relay driver 18 drives an electric heater relay 19, a high frequency oscillation control relay, etc. (not shown in the figure) according to signals from the microcomputer 7. The display tube 21 and the key input device 20 are strobed by a strobe signal from the microcomputer 7, and time-division display and time-division input are checked.

FIG. 4 shows a processing procedure program stored inside the microcomputer 7. That is, this is an example of a program in which, after starting cooking, it is determined whether or not there is a heating chamber partition plate, and the process is branched to each cooking mode. This program memorizes the cooking time until the ambient temperature reaches 150°C, and then when it reaches 150°C,
Grill cooking or oven cooking is determined by calculating the monthly value of the temperature from the start of cooking divided by the required time and comparing and determining whether the value is 20 or more or less than 20.

On the other hand, FIG. 5 shows an embodiment in which two thermistors are installed. In other words, the ambient temperature in the partial heating chamber 12a partitioned by the heating chamber partition plate is detected by the upper heating chamber thermistor 15a, and
The ambient temperature is detected by a thermistor 15b for the lower heating chamber.

An embodiment of the present application has been described above, but in the case of grill cooking using the heating chamber partition plate 14, the atmospheric temperature between the upper heating chamber and the lower heating chamber can be adjusted without setting the cooking temperature or time. By detecting the difference, it is possible to recognize the cooking mode and automatically execute cooking. Note that in the above description, parts necessary for high-frequency heating are not shown in the drawings.

Effects of the Invention As described above, according to the structure of the present invention, the following effects can be achieved.
□9 You can get the following effects.

(1) The presence or absence of a heating chamber partition plate is automatically determined based on the magnitude of the temperature rise change value of the heating chamber temperature, and as a result, the cooking mode of oven cooking or grill cooking is also identified,
Depending on the cooking mode, the heating pattern can also be changed to perform cooking. Therefore, at the setting operation stage, optimal grill cooking can be performed without the need for key operations and setting of cooking conditions for grill cooking, and it is also possible to simplify the operation and reduce costs by omitting the setting operation means. It is.

(2) The presence or absence of a heating chamber partition plate is determined by knowing its temperature change, and as a result, cooking conditions such as control temperature and control time are automatically adjusted, eliminating overheating and improving safety performance. is measured.

(3) By installing a thermistor in each of the upper and lower heating chambers, it becomes possible to determine the presence or absence of a heating chamber partition plate with very high accuracy, and a heating device with higher cooking performance can be realized.

[Brief explanation of the drawing]

10,・l Fig. 1 is a front view showing a state in which the door of the overhead heating device according to an embodiment of the present invention is opened, Fig. 2 is a drawing showing an increase in the temperature inside the refrigerator, and Fig. 3 is a diagram showing a change in temperature inside the refrigerator. Block diagram of the four control parts,
Fig. 4 is a flowchart of the program processing procedure inside the control unit, Fig. 5 is a front view of a ceiling additional heating device according to another embodiment, and Fig. 6 is a front view of a conventional high frequency heating device with a ceiling. . 3...Object to be heated, 4...Electric heater, 12
a... Upper heating chamber, 12b... Lower heating chamber, 14... Heating chamber partition plate, 15...
thermistor. Name of agent: Patent attorney Toshio Nakao and 1 other person A
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Claims (3)

[Claims] (1) A heating chamber that stores an object to be heated, a means for heating the object provided above the heating chamber, a heating chamber partition plate that partitions the heating chamber into at least two upper and lower chambers, and a heating chamber that partitions the heating chamber into at least two upper and lower chambers; a control unit that controls power supply to the heating means based on the information from the temperature detection means; and a control unit that controls the presence or absence of the heating chamber partition plate based on the information from the temperature detection means; A high-frequency heating device with a ceiling flame, comprising: an identification means for identifying a partition plate, and a heating pattern is variable according to partition plate presence information from the identification means. (2) The high-frequency heating device with a ceiling flame according to claim 1, wherein the heating chamber partition plate also serves as a table for placing an object to be heated. (3) Claims (1) or (2) characterized in that the ambient temperature detection means is configured to detect the ambient temperature of each of the upper and lower chambers partitioned by a heating chamber partition plate.
A high-frequency heating device with a ceiling fire as described in .