JPH08178295A - Heating cooking apparatus and heating control method thereof - Google Patents

Abstract

(57) [PROBLEMS] To provide a heating and cooking device for performing cooking by determining the temperature of a cooking product from the temperature of a pan in which the cooking product is placed and adjusting the heat power. SOLUTION: The gas that heats the pan by detecting the outer surface temperature of the pan (24) in a non-contact manner, calculating the temperature of the food in the pan from the detected temperature, and comparing the calculated temperature with the set temperature. The combustion means (gas burner 17) is controlled to realize optimum cooking.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention finds the temperature of a cooking product from the outer surface temperature of a cooking vessel, compares the cooking product temperature with a preset cooking product temperature, and based on that, controls the heating power of a heat source. The present invention relates to a heating and cooking device to be performed and a heating control method thereof.

[0002]

2. Description of the Related Art Conventionally, in a heating and cooking apparatus, for example, a gas stove as shown in FIG. 5, a movable portion 3 having a built-in contact type temperature sensor is arranged substantially at the center of a burner head 2 of a gas burner 1. There is a structure. This movable part 3
Is supported by the supporting portion 5 via a spring member (not shown) so as to project above the upper surface of the stack 4 for mounting a pot or the like.

When the pot is placed on the stove 4, the tip of the movable part 3 is brought into close contact with the bottom of the pot by the spring force, and the temperature of the bottom of the pot is detected by the contact temperature sensor, and the gas is adjusted to adjust the heating power. It is designed to control supply.

[0004]

As described above, in the gas stove, the heating power is adjusted based on the temperature of the bottom of the pot heated by the flame of the gas burner 1. However, the problem is that the pot is put in the pot. It is a cooked food. That is, the way of adjusting the heat power differs depending on the food, and the heat power adjusting method as described above cannot be said to be a heat power adjusting means corresponding to the food.
Depending on the food to be cooked, there is a risk that it will be overheated and burned in the pan, or conversely, it will be insufficiently heated.

Therefore, it suffices to detect the heating state (temperature) of the cooked food and adjust the heating power. To detect the temperature of the cooked food, a temperature detecting means is provided inside the pan, or Since the temperature detection means must be inserted from the outside to the inside of the pan to detect the temperature of the food, only a cooking container provided with such temperature detection means can be used, which is a major limitation.

[0006] Therefore, a first object of the present invention is to provide a heating and cooking device for performing cooking by determining the temperature of the cooking product from the temperature of the pan in which the cooking product is placed and adjusting the heating power. To do.

A second object of the present invention is to provide a heating control method for a heating / cooking apparatus which prevents burning.

[0008]

The heating and cooking apparatus of the present invention detects the outer surface temperature of the pan (24) in a non-contact manner, calculates the temperature of the food in the pan from the detected temperature, and calculates the calculated temperature. The gas burning means (gas burner 17) for heating the pan is controlled based on the magnitude relation between the temperature and the set temperature to realize optimum cooking.

Therefore, in order to achieve the first object, the heating and cooking device of the present invention as set forth in claim 1 is, as illustrated in FIG. A heating and cooking device (gas stove 10) for heating and cooking the food by heating with a gas burner 17), the outer surface temperature of the pan being set on the gas combustion means in a non-contact manner with the pan. A temperature detecting means (non-contact type temperature sensor 22) for detecting and a temperature suitable for heating the cooked food are set, and a steady deviation obtained corresponding to the outer surface temperature of the pan detected by the temperature detecting means. Is calculated from the outer surface temperature to calculate the temperature of the food in the pan, and the calculated temperature is compared with the set temperature. If the calculated temperature is equal to or lower than the set temperature, the gas combustion means Supply of combustion gas to Increases, when said calculated temperature exceeds the set temperature, characterized in that a control means for reducing the supply amount of the combustion gas to the gas combustion unit.

Further, in order to achieve the second object, the heating control method of the heating and cooking apparatus according to the second aspect of the present invention achieves the second object, as shown in FIG. A heating control method of a heating and cooking device for heating and cooking the cooked food by heating the cooked food, wherein a temperature suitable for heating the cooked food corresponds to an outer surface temperature of the pan detected by the temperature detecting means. By subtracting the steady-state deviation obtained by subtracting from the outer surface temperature, the temperature of the food in the pan is calculated, and the calculated temperature is compared with the non-sticking set temperature, and the calculated temperature is equal to or higher than the set temperature. When the temperature rises, the gas combustion of the gas combustion means is stopped.

[0011]

The present invention is a heating and cooking device for heating and cooking a cooking product by heating a pan containing the cooking product by gas combustion means. This heating and cooking apparatus is provided with a temperature detecting means for detecting the outer surface temperature of the pot and a heating control means for the gas combustion means for heating the pot. The temperature detection means is set on the gas combustion means and detects the outer surface temperature of the pan without contacting the pan. And the control means
A temperature suitable for heating the cooked food is set, and a steady deviation obtained corresponding to the outer surface temperature of the pot detected by the temperature detecting means is subtracted from the outer surface temperature, thereby The temperature of the cooked food is calculated, the calculated temperature is compared with the set temperature, and if the calculated temperature is equal to or lower than the set temperature, the amount of combustion gas supplied to the gas combustion means is increased to set the calculated temperature. If the temperature is exceeded, the amount of combustion gas supplied to the gas combustion means is reduced. As a result, the food can be cooked at the optimum temperature suitable for the food.

Further, the present invention according to claim 2 is a heating control method of a heating and cooking apparatus for heating and cooking a cooking product by heating a pan containing the cooking product by a gas combustion means. This control method, in the heating and cooking device,
It prevents burning. That is, by subtracting from the outer surface temperature a steady-state deviation that is suitable for heating the cooked food and corresponding to the outer surface temperature of the pan detected by the temperature detecting means, The temperature of the cooked food is calculated, and the calculated temperature is compared with the non-sticking set temperature. When the calculated temperature rises above the set temperature, the gas combustion of the gas combustion means is stopped to prevent the non-stick. When the temperature of the cooked food, that is, the calculated temperature rises above the set temperature set for that purpose, the gas combustion is stopped. As a result, it is possible to prevent burning of the cooked food.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the drawings.

1 to 4 show an embodiment of a heating cooking apparatus and a heating control method thereof according to the present invention.

1 to 3, reference numeral 10 denotes a gas stove which is a heating and cooking device, and the gas stove 10 is
It has a housing 11 in which a gas burner as a heat source is arranged. A panel 14 on which an ignition switch 12 and a temperature control knob 13 serving as a temperature setting means for cooking food are provided in the housing 11.
And a combustion port 15 of the gas burner 12 and a projecting portion 16 in which a non-contact temperature sensor described later is housed.

As shown in FIG. 1, the combustion port 1 in the housing 11
5, a gas burner 17 is provided at a position facing the combustion port 1.
5 is provided with a stack 18 for mounting a vessel for heating and cooking. For the gas burner 17, the original solenoid valve 1
9, gas is supplied through the safety valve 20 and the gas proportional valve 21.

A non-contact type temperature sensor 22 is housed in the projecting portion 16 as a temperature detecting means, and a pot 24 as a container for heating and cooking is provided through an opening 23 formed in the projecting portion 16. The non-contact temperature sensor 22 detects the temperature of the side surface of the pot 24 near the bottom portion 25.

The non-contact type temperature sensor 16 is, for example,
A thermopile which is a thermal type sensor is used, and other known ones may be used. In addition, an ignition transformer 26 as a means for igniting, a frame rod 27 as a flame detecting means, a detection signal is introduced from a component constituting the gas stove 10, and various operation control commands are introduced into the housing 11. A control circuit unit 28 for outputting is provided. In the control circuit unit 28, the temperature is set in advance in various control modes, for example, depending on the type of food to be cooked and the degree of cooking, and the gas burner sends control commands for the gas supply control so as to obtain the corresponding heating power. It is designed to output to 17. Further, in order to prevent the nonstick of the cooked food, a nonstick char temperature as a limit temperature is set.

The control operation in the above configuration will be described.

Various cooking conditions, that is, the temperature condition of the food to be cooked, are set in advance, and a signal relating to the temperature of the food thus set is taken into the control circuit unit 28 and stored therein. Next, the pot 24 is placed on the heater 18 of the heating and cooking apparatus 10, the ignition switch 12 is operated, the original solenoid valve 19, the safety valve 20, and the gas proportional valve 21 are opened, and the gas burner 17 installed as a gas combustion means is installed. Is ignited (Fig. 3).

Then, the temperature of the side surface near the bottom portion 25 of the pot 24 is detected by the non-contact temperature sensor 22, and the bottom portion 2
The detection signal relating to the temperature of the side surface in the vicinity of 5 is introduced into the control circuit unit 28 as the control means of the gas combustion means. As shown in FIG. 4, the control circuit unit 28 stores in advance a value relating to the difference between the temperature of the cooking product corresponding to the temperature of the side surface near the bottom 25, that is, a steady-state deviation (offset), The control circuit unit 28 subtracts the steady-state deviation from the temperature of the side surface near the bottom 25 to obtain the temperature of the food. Next, the control circuit unit 28 compares the temperature of the cooked food at that time with the set temperature of the cooked food, and if the temperature of the cooked food is less than the set temperature, increases the gas supply amount. Therefore, the control command is output to the gas proportional valve 21, and when the set food temperature is exceeded, the control command is output to the gas proportional valve 21 in order to reduce the gas supply amount.

Here, when the temperature of the cooked food exceeds the set temperature and a predetermined time elapses, it is determined as an abnormal condition that a control command is issued to cut off the gas supply, and the gas proportional valve 21 and the original solenoid valve 1 are operated.
9. It is also possible to output to the safety valve 20.

As described above, the temperature of the side surface near the bottom portion 25 of the pot 24 for heating and cooking is detected by the non-contact temperature sensor 22, and the temperature of the cooked product is obtained from this detection signal to adjust the heating power. Since this is done, it is possible to cook the food according to the food to be cooked. In addition, it is not necessary to directly detect the temperature of the food to be cooked, and the heating power can be adjusted in the cooking containers other than the pot 24.

Since the non-contact type temperature sensor 22 for detecting the temperature of the side surface near the bottom portion 25 of the pot 24 is provided at a position distant from the gas burner 17, the non-contact type sensor due to spillage, oil smoke, etc. during cooking. The temperature sensor 22 can be prevented from becoming dirty, and further, unlike the contact-type temperature sensor, it is not damaged by the bottom of the pot such as the pot 24.

[0025]

As described above, according to the present invention, the following effects can be obtained. a. According to the invention described in claim 1, since the cooking product is indirectly obtained from the outer surface temperature of the vessel for heating and cooking, and the heating power is adjusted, the heating power is appropriately adjusted by the cooking product. Then, cooking can be performed. Moreover,
It is not necessary to directly detect the temperature of the cooking product, and it can be used regardless of the cooking container. b. According to the second aspect of the present invention, it is possible to prevent the cooked food from being burnt and to perform optimum cooking.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram that is one embodiment of a heating and cooking device.

FIG. 2 is a perspective view showing an embodiment of a heating and cooking device.

FIG. 3 is a block diagram showing a control circuit unit of the heating and cooking device.

FIG. 4 is a characteristic diagram showing the relationship between the temperature of the outer surface of the container and the temperature of the cooking product.

FIG. 5 is a side sectional view showing a conventional heating and cooking device.

[Explanation of symbols]

 10 gas stove (heating cooking device) 17 gas burner (gas combustion means) 22 non-contact type temperature sensor (temperature detection means) 24 pan 28 control circuit section (control means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masami Yamamoto 201 Shin-Kashiwabara Shinden, Fuji City, Shizuoka Prefecture Takagi Industrial Co., Ltd.

Claims (2)

[Claims] 1. A heating and cooking device for heating and cooking the food by heating a pan containing the food by a gas combustion means, the heating cooking device being set on the gas combustion means and being in non-contact with the pan. Temperature detection means for detecting the outer surface temperature of the pot, a temperature suitable for heating the food is set, the steady-state deviation obtained corresponding to the outer surface temperature of the pot detected by the temperature detection means, The temperature of the food in the pot is calculated by subtracting it from the outer surface temperature, the calculated temperature is compared with the set temperature, and if the calculated temperature is less than or equal to the set temperature, combustion for the gas combustion means is performed. And a control means for increasing the supply amount of gas and reducing the supply amount of combustion gas to the gas combustion means when the calculated temperature exceeds a set temperature, . 2. A heating control method for a heating and cooking device, wherein a pan containing a food to be cooked is heated by a gas combustion means to heat and cook the food, wherein a temperature suitable for heating the food is the temperature. The steady-state deviation obtained corresponding to the outer surface temperature of the pot detected by the detection means is subtracted from the outer surface temperature to calculate the temperature of the food in the pot, and the calculated temperature and the non-sticking prevention A heating control method for a heating and cooking apparatus, comprising: comparing with a set temperature, and stopping the gas combustion of the gas combustion means when the calculated temperature rises above the set temperature.