JPS6062511A - Method of controlling temperature in oven of heating cooker - Google Patents

Abstract

PURPOSE:To control the temperature in an oven, so that cooking can be started at the predetermined cooking temperature from the beginning, by connecting a temperature detecting sensor to a controller, and by controlling the preheating temperature to be set in the oven by the controller, so that temperature is always kept higher than the cooking temperature before cooking is started. CONSTITUTION:The temperature in an oven 1 is controlled by connecting a temperature detecting sensor 7 to a controller 8 in a heating cooker. The controller 8 controls the oven 1 by setting the preheating temperature which is always higher than the cooking temperature. The preheating temperature is determined by the temperature detecting sensor 7, with the chillness of raw food 10 and of a plate 11 on which the food is placed, and the flow of heat escaping from the oven when the door is opened, taken into account. After cooking is started, the temperature in the oven is controlled so that the cooking time is not lengthened by the fall of the temperature, as well as to control to keep the inside of an oven at the predetermined cooking temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a temperature control method in a heating oven for cooking food.

[Technical background of the invention]

As shown in FIG. 1, a heating cooking device such as a microwave oven of this type that has already been proposed includes an oven frame 2 that forms an oven l't in a case body (cabinet), and this oven frame. Encouragement 1 Tatsuguchi 3 on top plate 2a of body 2
A waveguide 4 is attached to the top plate 2a above the excitation port 3 so as to cover it, a magnetron 5 is installed at one end of the waveguide 4, and a magnetron 5 is installed at one end of the waveguide 4. A through hole 6 is bored in the top plate 2a near the excitation port 3, and a temperature detection sensor 7, such as a thermistor, for detecting the temperature inside the oven 1 is provided above the through hole 6, and the temperature detection sensor 7 is installed above the through hole 6 to detect the temperature inside the oven 1. The sensor 7 is electrically connected to a control device 8 incorporating a microcomputer. f, f, :F6, Inside the oven 1, a shelf board 11 on which the food to be cooked 10 is placed is removably installed. 1 includes a pair of upper and lower heaters 123.
, 12b are provided (Iro.

Therefore, in the oven temperature control method for the heating cooking apparatus described above, in oven cooking, the cooking time and cooking temperature T are set in advance in the control device 8 by an operation panel (not shown), and the control device When cooking operation button 9 linked to 8 is pressed.

In the cooking device stage starting from preheating (also called preheating mode), as shown in the graph of FIG.

The preheating temperature (preheating control temperature) T1 and the cooking temperature (cooking control temperature) To are set to be the same temperature.

That is, the preheating temperature in the oven 1 is the same as that of the magnetron 5.
The temperature is raised by the output of the magnetron 8, which is detected by the temperature detection sensor 7, and the detection signal detected by the temperature detection sensor 7 is controlled by the control device 8. Based on this, the output of the magnetron 8 is adjusted to the preheating temperature. and the cooking temperature to the same temperature.

[Problems with background technology]

However, in the oven temperature control method in the heating cooking apparatus described above, when the inside of the oven 1 reaches the preheating temperature, as shown in FIG. 2, the door opens and closes? When the opening force is applied, the food to be cooked 10 is placed inside the oven 1, and the air flows out of the oven 1, and the cold food 10 and shelf board 11 are removed.
As a result, the preheating temperature inside the open l suddenly decreases, and even if you close the door and immediately perform a cooking start operation to bring the cooking temperature to
It takes a considerable amount of time to store the hot air that flows out when the door, shelf board 11, and door are opened and raise it to the cooking temperature, and the time required is measured as the cooking time.
There are disadvantages such as not being able to maintain an accurate cooking temperature, resulting in a so-called goo-like cooking result.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and includes setting the preheating temperature higher than the cooking temperature during open cooking,
The purpose of this is to control the temperature in anticipation of the outflow of cold air from buried items and shelves, and hot air that accompanies opening the door, and to control the internal heating at a predetermined temperature A after cooking begins. The present invention provides an oven temperature control method for a heating cooking device.

[Summary of the invention]

The present invention is an open temperature controlled 8-temperature cooking device in which a temperature detection sensor is connected to a control device, and the oven is heated and controlled by always setting the preheating temperature higher than the cooking temperature.

) Implementation of the Invention <'AJ) Hereinafter, the present invention will be described with reference to an illustrated embodiment. Explanation - 4"A1), 751 and 3"6, the oven temperature control method in the heating cooking apparatus of the present invention in 46 is a method for controlling the oven temperature in the heating cooking apparatus in which the temperature detection sensor 7 is connected to the control device 8. d, the cooking time is set in advance to the control device 8.1. ? The degree T is set using the operation panel.

In this case, by setting the cooking time and cooking temperature,
As shown in the graph of FIG. 3, the control device 8 equipped with a microcomputer always maintains the preheating temperature T at the cooking temperature when the heating means starts from the preheating mode. #s The memory is set so that 71 Ishi-Pun 1 Shi Kabato City 11 Monument is written in J-Kan/ni. That is, the preheating temperature T8 is the cooking temperature T. The temperature is set higher than that by ΔT. Therefore, even if the open door 1 reaches the preheating temperature, the food to be cooked 10 or the shelf board 11 is inserted, and some of the hot air inside the oven 1 flows out due to the door opening, the temperature inside the oven 1 will remain the same. As is clear from the graph of FIG. 3, the cooking temperature is maintained.

The graph shown in FIG. 4 shows the preheating temperature T1 and the cooking temperature T. Which relationship is shown, and the cooking temperature T0
The higher the value of 1 is, the wider the temperature difference (ΔT, ,=T1-To) between the preheating temperature T1 and the cooking temperature becomes.

That is, this is because the temperature drop due to the outflow of the food to be cooked 10, shelf board 11, and hot air from the oven is too large, for example, the cooking temperature T. The temperature is set at about 250°C, and the preheating temperature T is set at about 270°C.

Therefore, in the present invention, the cooking time and cooking temperature T are set in advance in the control device 8. Set 1 on the operation panel as heating cooking starting from preheating mode.

Next, create a cooking operation button 9 that is linked to the control device 8.
When cooking starts from the preheating mode, the preheating temperature r is the cooking temperature T, as shown in the graph of FIG. The inside of the oven is preheated at a temperature △T higher than 1" to 5.

In this case, the preheating temperature T1 in the oven 1 is increased by the output of the magnetron 5, and this is detected by the temperature rise sensor 7, and furthermore, the preheating temperature T1 in the oven 1 is
], 1-The detection signal detected by the sensor 7 is transmitted to the side 11.
As mentioned above, the output preheating temperature T1 by the magnetron 8 is controlled by the cooking temperature 'ro
7 to raise the temperature by heating it to a temperature higher than △T.
;I'm in C.

In this way, when the inside of the oven 1 reaches the preheating temperature, the opening/closing door can be opened and closed (411) as shown in FIG.
If you insert a shelf board 11 into the oven 1, the cooking temperature will be maintained at T even if the hot air inside the oven 1 flows out. It is designed to be kept at a temperature that is acceptable.

Next, the flowchart shown in FIG. 5 shows the MTh deviation of the operation process of the present invention.

〔Effect of the invention〕

As described above, according to the present invention, the preheating temperature T is used in the heating cooking apparatus in which the temperature detection sensor 7 is connected to the control device 8° to control the open temperature.

Always cook at a temperature higher than T1%f,I,',,l
Set to 7 and open 1 to control heating 5 to 7. C
Therefore, even if hot air flows out due to the insertion of the cold object 10 or shelf board 11 or the heating, the inside of the oven 1 is maintained at the cooking temperature, allowing accurate heating and cooking. In addition, it has excellent effects such as eliminating the risk of prolonging the cooking time due to temperature drop in the oven 1 (σ).

[Brief explanation of the drawing]

Figure 1 shows the already proposed IJl heat: I'd]
! Figure 2 is a graph for explaining the method of controlling the oven temperature of the heating cooking apparatus described in H. Figure 3 is a sectional view of the neck of the heating cooking apparatus. FIG. 4 is a graph showing the relationship between cooking temperature and preheating temperature of the present invention, m 5
The figure is a diagram illustrating a φ flowchart according to the present invention. DESCRIPTION OF SYMBOLS 1...Oven, 2...Open frame body, 5...Magnetron, 7...Temperature detection sensor 8...Magnetron, 1()...To be cooked, 11...Shelf board. Applicant's agent Kiyoshi Inomata

Claims (1)

[Claims] 1. In a heating cooking device that controls the temperature of an oven by connecting a temperature detection sensor to the control device, the heating temperature of the oven is always set higher than the cooking temperature to control the heating of the oven. An oven temperature control method for a heating cooking device, characterized in that: 2. The oven temperature control method for a heating cooking apparatus according to claim 1, wherein the temperature difference between the preheating temperature and the cooking temperature increases as the cooking temperature increases.