JP2001340232A - Gas cooking apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure the safety of a heating chamber of a gas cooking apparatus and improve the convenience of the apparatus. SOLUTION: The gas cooker is provided with a temperature sensor 6 in the heating chamber 1 for storing a food 3 to be heated, and a control unit 7 for controlling a gas cooking unit 8 which varies the gas amount or the gas shut-off temperature by the output of the temperature sensor 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking device using gas as a heat source.

[0002]

2. Description of the Related Art Generally, as means for preventing overheating of a heating chamber such as a grill, when cooking time reaches a preset gas shutoff time, gas supplied to a gas burner is shut off, or the temperature of the heating chamber is reduced to a temperature. Means for shutting off gas when a gas is detected by a sensor and reaches a preset gas shutoff temperature is used alone or in combination.

[0003]

However, when the amount of gas supplied to the gas burner is constant and does not change with the conventional means, the change in the internal temperature of the refrigerator depends on the temperature at the start of cooking, the size and the number of objects to be heated. Are very different. For example, if an object to be heated having a small heat load is cooked in a state of a large amount of gas, the temperature in the refrigerator rises rapidly, so that the gas reaches the gas cutoff temperature even during the cooking and the cooking is interrupted.

[0004] Further, if cooking is performed continuously, the initial temperature in the refrigerator is high, so that the gas shut-off temperature can easily be reached quickly, and similarly, there arises a problem that cooking is interrupted.

On the other hand, when an object to be heated having a large heat load is cooked with a small amount of gas, the temperature rise to a temperature suitable for cooking is slowed, and the quality of cooking deteriorates.

[0006] In addition, the ignition time of the object to be heated is related to the heating time in addition to the temperature. If the heating time is long, the ignition may occur at a lower temperature.

As described above, a heating chamber such as a grill is required to have an easy-to-use configuration such that cooking is not interrupted during actual cooking.

[0008]

In order to solve this problem, the present invention is configured to vary the amount of gas from a gas control section based on the temperature output of a temperature sensor.

When the difference between the temperature output of the temperature sensor during cooking and the gas shut-off temperature becomes equal to or less than a predetermined value, the gas amount is reduced by the gas adjusting section.

[0010] Further, the gas amount at the start of cooking is varied based on the temperature output of the temperature sensor at the start of cooking.

[0011] Further, the constitution is such that the amount of gas thereafter is varied according to the amount of change in the temperature output of the temperature sensor during cooking for a certain period of time during cooking.

According to the present invention described above, safety can be ensured even if the initial temperature in the heating chamber or the size and quantity of the cooked food varies, and further, it is possible to prevent usability such as shutting off gas during cooking. Can be.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The first aspect of the present invention is a configuration in which the amount of gas from a gas control section is varied by the temperature output of a temperature sensor. When the temperature is low, the heating can be performed strongly, and when the temperature is high, the heating can be performed weakly, so that the variation in the temperature of the heating chamber can be suppressed.

According to a second aspect of the present invention, the amount of gas at the start of cooking is varied by the temperature output of the temperature sensor at the start of cooking. If the temperature in the room is low, it will heat more than at the start of cooking. If the temperature of the heating chamber at the start of cooking is high, the heating can be weaker than at the start of cooking, so that the time until the temperature of the heating chamber becomes stable after the start of cooking can be constant.

According to a third aspect of the present invention, when the difference between the temperature output of the temperature sensor during cooking and the gas shut-off temperature becomes equal to or less than a certain value, the gas amount is reduced by the gas adjusting section. According to the embodiment, when the temperature output of the temperature sensor during cooking approaches the gas cutoff temperature, heating can be suppressed, so that the heating chamber temperature does not easily reach the gas cutoff temperature.

According to a fourth aspect of the present invention, there is provided a configuration in which the amount of gas thereafter is varied by a temperature gradient of the temperature output of the temperature sensor during cooking for a certain period of time. By estimating the heat capacity of the object to be heated from the temperature change per unit time of the temperature output of the temperature sensor during cooking and changing the heating conditions, even if the object to be heated is small and the number is small, the temperature of the heating chamber will be gas. It becomes difficult to reach the cutoff temperature.

[0017]

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

FIG. 1 is a schematic sectional view of a heating chamber according to the present invention.
A gas burner 2 is provided on the upper surface of the heating chamber 1 opened in front of the appliance. The article to be heated 3 is mounted on the juice receiving tray 4 and is taken in and out of the heating chamber 1. A temperature sensor 6 is provided on the rear wall 5 of the heating chamber, and a temperature output from the temperature sensor 6 is transmitted to the control unit 7. Gas burner 2
The control of the gas supply and the presence / absence of the cutoff of the gas are determined by the control unit 7, and the gas is controlled by the gas control unit 8.

FIG. 2 shows a change in temperature over time of a heating chamber provided with a gas heating cooker. The horizontal axis represents the cooking time from the start of cooking, and the vertical axis represents the temperature output from the temperature sensor 6. Normally, in a gas heating cooker, the gas cutoff temperature Tcl is set at about 230 ° C., and when the temperature exceeds this line, the gas is cut off. Alternatively, a gas shutoff time Pcl is provided around 25 minutes after the start of cooking, and a gas shutoff time is exceeded when this time is exceeded. The output curve 9 shows the temperature output when a normal superheated object 3 (four saury, etc.) is cooked. With this size of the object to be heated, cooking is completed in about 12 minutes after the start of cooking, but if left untouched, the temperature continues to rise and the gas shutoff time P
cl and shut off the gas. If the gas cutoff time Pcl is not provided, the object to be heated may be ignited when the temperature output becomes around 200 ° C. The output curve 10 shows the temperature output when the object to be heated 3 having a small heat capacity (eg, one horse mackerel) is cooked. Due to the small heat capacity, the temperature rises rapidly and reaches the gas cutoff temperature Tcl in about 8 minutes,
Although the gas is shut off, the object 3 is ignited at about 300 ° C. if left as it is.

FIG. 3 shows the temperature transition when a slightly small object to be heated is cooked with a large amount of gas. When the temperature at the time of starting cooking is normal temperature (about 20 ° C.), the output curve 11 is plotted. The output curve 12 shows the case where the temperature is high (100 ° C. or higher).

In the case of starting at normal temperature, the time required for the temperature output to reach the gas cutoff temperature Tcl is about 12 minutes, and the cooking can be completed in the case of a small object to be heated. However, in the case of starting high temperature, the gas cutoff temperature T is about 8 minutes after the start of cooking.
The cooking is interrupted on the way to reach cl.

Therefore, a start temperature determination value Tjl is provided, and when the start temperature is higher than Tjl, the temperature rise can be suppressed by reducing the amount of gas supplied to the gas burner 2 from the start of cooking. In that case, the output curve 13 shows the temperature transition.

With this configuration, a necessary cooking time can be ensured even when cooking is started in a state where the temperature of the heating chamber is high.

At this time, if the cooking is started in a state where the amount of gas is small at the start of the normal temperature, it takes too much time for the heating chamber to reach a temperature suitable for the cooking, so that the cooking is delayed and the work quality is deteriorated. Occurs.

FIG. 4 shows the temperature output when cooking is started for a smaller object 3 with a large gas amount.

As shown in the output curve 14, since the heat capacity of the object to be heated is very small, the temperature output becomes the gas cutoff temperature Tcl.
The time required to reach is shortened to about 8 minutes, and the cooking is interrupted halfway.

Therefore, a gas amount changing temperature Tj2 is provided, and when the temperature output exceeds Tj2, the temperature rise can be suppressed by reducing the amount of gas supplied to the gas burner 2. The output curve 15 shows the temperature transition.

With this configuration, a necessary cooking time can be secured even in the case of the heated object 2 having a very small heat capacity.

FIG. 5 also shows an output curve 16 showing a temperature output when cooking of a considerably small object 3 is started with a large amount of gas, and an output curve 16 showing a normal temperature output of the object to be heated. I have.

Since the output curve 16 also has a very small heat capacity, the time required for the temperature output to reach the gas cut-off temperature Tcl is as short as about 8 minutes, and the cooking is interrupted halfway.

Therefore, a temperature rise determination value ΔTj3 for a predetermined time ΔP from the start of cooking is provided, and when the temperature rise value exceeds ΔTj3, the amount of gas supplied to the gas burner 2 is reduced. In the case of the output curve 16, since ΔT2 is larger than ΔTj, the temperature rise can be suppressed by reducing the gas amount halfway.

With this configuration, a necessary cooking time can be ensured even in the case of the heated object 2 having a very small heat capacity.

[0033]

As described above, according to the first aspect of the present invention, the variation in the temperature of the heating chamber can be suppressed by changing the gas amount.

Further, according to the second aspect of the present invention, by varying the gas amount at the start of cooking, it is possible to make it difficult to reach the gas cutoff temperature even in the case of a heated object having a small heat capacity at the start of high temperature. .

Further, according to the third aspect of the present invention, when the temperature of the heating chamber becomes equal to or higher than a predetermined value, the gas amount is reduced by the gas adjusting section, so that the gas reaches the gas cutoff temperature even in the case of a heating object having a small heat capacity. It can be difficult to do.

Further, according to the fourth aspect of the present invention, by changing the gas amount according to the temperature rising state of the heating chamber, it is possible to make it difficult to reach the gas cutoff temperature even in the case of a heated object having a small heat capacity. .

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a heating chamber according to the present invention.

FIG. 2 is a graph showing a temperature transition of a general heating chamber.

FIG. 3 is a graph showing a temperature transition of a heating chamber according to the present invention.

FIG. 4 is a graph showing temperature transition of another heating chamber according to the present invention.

FIG. 5 is a graph showing a temperature transition of still another heating chamber according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating room 2 Gas burner 3 Heated object 4 Juice tray 6 Temperature sensor 7 Control part 8 Gas control part Tcl Gas cutoff temperature Tjl Gas change temperature

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hiroshi Furuichi 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Terms (reference) 3K068 FA02 FC02 FC06 FD05 GA07 HA08 4B040 AA08 AB02 AC02 CA02 CA15 EA08 LA02 LA13 LA14

Claims (4)

[Claims] 1. A heating chamber for accommodating an object to be heated, a gas burner for heating and cooking the object to be heated, a soup tray for placing the object to be heated and taking the object into and out of the heating chamber, and provided in the heating chamber. A temperature sensor, a gas control unit that shuts off gas to the gas burner, and a control unit that receives the output of the temperature sensor and controls the gas control unit, wherein the output of the temperature sensor reaches a gas cutoff temperature In the case, in the gas heating cooker configured to cut off gas at the gas adjusting unit, the gas amount from the gas adjusting unit is varied based on the temperature output of the temperature sensor. Cooking device. 2. The gas heating cooker according to claim 1, wherein the amount of gas at the start of cooking is varied based on the temperature output of the temperature sensor at the start of cooking. 3. The gas heating cooker according to claim 1, wherein when the difference between the temperature output of the temperature sensor and the gas cutoff temperature becomes equal to or less than a predetermined value, the gas amount is reduced by the gas control section. 4. The gas heating cooker according to claim 1, wherein a subsequent gas amount is varied based on a temperature change amount of the temperature output of the temperature sensor during a certain period of time.