JP3016547B2 - Cooking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for obtaining the temperature of a food from the outer surface temperature of a container for cooking , comparing the temperature with a preset temperature of the food, and controlling the heat power of a heat source based on the temperature. it relates to cooking equipment.

[0002]

2. Description of the Related Art Conventionally, in a heating 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 disposed substantially at the center of a burner head 2 of a gas burner 1. Some have been configured. This movable part 3
Is supported by the support portion 5 via a spring member (not shown) so as to protrude above the upper surface portion of the gotok 4 for placing a pot or the like.

When the pot is placed on the pot 4, the tip of the movable part 3 is brought into close contact with the bottom of the pot by a spring force, and the temperature at the bottom of the pot is detected by a contact-type temperature sensor. The supply is controlled.

[0004]

As described above, in the gas stove, the heating power is adjusted based on the temperature at the bottom of the pot heated by the flame of the gas burner 1, but the problem is that the gas stove is placed in the pot. Cooking. That is, the method of adjusting the heat power varies depending on the food, and the heat power adjustment method as described above cannot be said to be the heat power adjustment means corresponding to the food.
Depending on the food, there is a risk of overheating and burning of the pot, or conversely, insufficient heating.

[0005] For this reason, it is only necessary to detect the heating state (temperature) of the food to adjust the heating power. In order to detect the temperature of the food, it is necessary to provide a temperature detecting means inside the pot or Since the temperature of the food must be detected by inserting the temperature detecting means from the outside to the inside of the pan, the cooking container cannot be used unless the cooking vessel is provided with such temperature detecting means, which is a great limitation.

Therefore, the present invention provides a container for storing food.
From the temperature of the side wall, seeking temperature of the food, and purpose thereof is to provide a cooking device that performs cooking by adjusting the adjusting firepower.

[0007]

SUMMARY OF THE INVENTION A cooking device according to the present invention detects the outer surface temperature of a container (pan 24) in a non-contact manner, calculates the temperature of the food in the container from the detected temperature, and calculates the temperature. A gas burner (17) for heating the container is controlled based on the magnitude relationship between the temperature and the set temperature, thereby realizing optimal cooking.

That is, as shown in FIG. 1, the cooking device of the present invention is provided with a housing (11) and an upper side of the housing.
A fixed combustion port (15) and installed on the upper surface of this combustion port
Container (pot 24) containing the food to be cooked and cooked
And the ignition switch (12) by the supply of fuel gas
When ignited, a flame is generated in the combustion port, and the container is heated.
Heating gas burner (17) and the gas burner
Gas valve for supplying and shutting off fuel gas (gas proportional valve 2)
1, the original solenoid valve 19) and the upper surface of the rear side of the housing,
It is installed away from the combustion port and installed on the top side of the combustion port.
Non-contact for detecting the outer surface temperature on the side wall side of the placed container
The contact type temperature sensor (22) and the gas burner
The outer surface temperature relative to the outer surface temperature of the container to be heated
And a temperature difference between the food temperature and the food temperature set for each food.
And the cooking temperature is set before cooking.
Outside the container detected by the non-contact temperature sensor.
Subtracting the temperature difference read according to the surface temperature
To calculate the temperature of the food in the container,
Degree is less than the set temperature, the opening degree of the gas valve
Increase the fuel gas supply to the gas burner
If the calculated temperature is equal to or higher than the set temperature,
The opening of the gas valve is reduced so that the fuel gas to the gas burner is
And the calculated temperature is equal to or higher than the set temperature.
If the gas burner continues for a predetermined time,
Control means (control circuit) for shutting off the supply of the fuel gas
Part 28).

[0009]

According to the present invention, a container containing cooked food is provided on a gas burner.
Therefore, a heating method that heats and cooks food by heating
It is a physical device. This cooking device can be used to measure the outer surface temperature of
A non-contact type temperature sensor for detecting
Gas burner. Non-contact temperature sensors
Non-contact detection of the outer surface temperature on the side wall of the container on the sburner
I do. And the control means is suitable for the heating for each cooked food.
Temperature is set and detected by the non-contact temperature sensor.
Steady-state error corresponding to the outer surface temperature of a closed vessel
Is subtracted from the outer surface temperature to obtain cooking in the container.
Calculate the temperature of the object and compare the calculated temperature with the set temperature
If the calculated temperature is below the set temperature, the gas burner
The supply temperature of the fuel gas to be increased
The fuel gas to the gas burner
Reduce supply. As a result, the optimal temperature
You can cook the food with
Can be prevented.

Further , the non-contact type temperature sensor is provided on the back of the housing.
It is installed away from the combustion port on the upper side of the container,
Temperature of the outer surface of
This does not hinder temperature detection.

[0011]

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

[0012] 1 to 4, cooking equipment of the present invention
It shows an embodiment of.

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

As shown in FIG. 1, a combustion port 1 in a casing 11 is provided.
5 is provided with a gas burner 17 and
5 is provided with a gotok 18 for placing a container for heating and cooking. The fuel gas is supplied to the gas burner 17 via a source solenoid valve 19, a safety valve 20, and a gas proportional valve 21 as gas valves.

A non-contact type temperature sensor 22 is housed in the protruding portion 16 as temperature detecting means, and a pot 24 is provided as a container for heating and cooking through an opening 23 formed in the protruding portion 16. And the non-contact temperature sensor 22 is
The temperature of the side wall near the bottom 25 of the fourth member 4 is detected.

The non-contact type temperature sensor 22 includes, for example,
A thermopile, which is a thermal sensor, is used, and other known devices may be used. In the housing 11, a detection signal is introduced from an ignition transformer 26 as a means for igniting, a frame rod 27 as a flame detecting means, and a component constituting the gas stove 10, and various operation control commands are issued. A control circuit unit 28 for outputting data is provided. In the control circuit unit 28, various control modes are set in advance, for example, the temperature is set according to the type of food and the degree of cooking, and a control command related to gas supply control is set in the gas burner in order to obtain the corresponding heating power. 17 is output. In addition, a non-sticking temperature is set as a limit temperature for preventing non-sticking of the food.

The control operation in the above configuration will be described.

Various cooking conditions, that is, food temperature conditions are set in advance, and a signal relating to the set food temperature is taken into the control circuit unit 28 and stored. Next, the pot 24 is placed on the gas stove 18 of the gas stove 10, operates the ignition switch 12, opens and closes the original solenoid valve 19, the safety valve 20, and the gas proportional valve 21, and opens the gas burner 17 installed as gas combustion means. Is ignited (FIG. 3).

Then, the temperature of the side wall near the bottom 25 of the pot 24 is detected by the non-contact temperature sensor 22, and this detection signal is introduced to a control circuit 28 as control means of the gas burner 17. As shown in FIG. 4, the control circuit unit 28 previously stores a value relating to a difference between the temperature of the food corresponding to the temperature of the side wall surface near the bottom 25, that is, a steady-state deviation (offset). The control circuit 28 subtracts the steady-state deviation from the temperature on the side wall near the bottom 25 to obtain the temperature of the food. Next, the control circuit unit 28 compares the temperature of the food at that time with the set temperature of the food, and if the temperature of the food is lower than the set temperature, increases the supply amount of the fuel gas. The control command is output to the gas proportional valve 21 in order to reduce the supply amount of the fuel gas when the temperature of the cooked food exceeds the set temperature.

Here, when a predetermined time has elapsed after the temperature of the food exceeds the set temperature, an abnormal state is determined, and a control command for shutting off the supply of fuel gas is issued to the gas proportional valve 21, the original solenoid valve 19, and the safety valve. It is also possible to output to 20.

As described above, the temperature of the side wall near the bottom 25 of the cooking pot 24 is measured by the non-contact type temperature sensor 22.
And the heating power is adjusted by obtaining the temperature of the food from the detection signal, so that the heating cooking corresponding to the food can be performed. Further, it is not necessary to directly detect the temperature of the cooked food, and the above-described heating power adjustment can be performed in a cooking vessel other than the pan 24.

The non-contact type temperature sensor 22 for detecting the temperature of the side wall surface near the bottom 25 of the pan 24 is connected to the gas burner 17.
By being provided at a position away from the temperature sensor, it is possible to avoid contamination of the non-contact type temperature sensor 22 by boiling, oil smoke, etc. during cooking, and furthermore, unlike the contact type temperature sensor, by the bottom of a container such as the pan 24. There is also an effect that there is no damage.

[0023]

As described above, according to the present invention, the following effects can be obtained. a. Since the temperature of the food is indirectly determined from the outer surface temperature on the side wall side of the container for heating and the heating power is adjusted, the cooking material has an appropriate heat power adjustment,
Heat cooking can be performed. Moreover, it is not necessary to detect the temperature of the direct food, Ri can der used regardless of the cooking container, it can prevent the scorching of the food, optimum
Cooking can be done. b. A non-contact temperature sensor with a combustion port
Outer surface temperature on the side wall of the container installed at a position away from
Temperature is detected, so the temperature can be detected by spilling from the container.
Uninterrupted and reliable temperature sensing
To control the heating.

[Brief description of the drawings]

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

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

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

FIG. 4 is a characteristic diagram showing a relationship between an outer surface temperature of a container and a food temperature.

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

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 gas cooker (heating cooking device) 11 housing 12 ignition switch 15 combustion port 17 gas burner 19 original solenoid valve (gas valve) 21 gas proportional valve (gas valve) 22 non-contact type temperature sensor 24 pot (container) 28 control circuit Unit (control means)

Continuation of the front page (72) Inventor Masami Yamamoto 201 Nishi-Kashiwara Nitta, Fuji-shi, Shizuoka Prefecture Inside Takagi Sangyo Co., Ltd. (56) References JP-A-62-180984 (JP, A) Jpn. , U) Japanese Utility Model Showa 62-31894 (JP, U) 37 (issued September 15, 1984) Reference number 37-074 “Safety device for stove” (58) Fields investigated (Int. Cl. ⁷ , DB name) F24C 3/12 F23N 5/08

Claims (1)

(57) [Claims] 1. A housing, a combustion port set on the upper surface side of the housing, and a cooking object to be heated and cooked installed on the upper surface of the combustion port.
The fuel gas supply and the ignition switch
A gas bubble that generates a flame in the combustion port and heats the container
And the supply and cutoff of fuel gas to this gas burner
A gas valve, and installed on the upper surface of the rear side of the housing, away from the combustion port.
And the side wall of the container installed on the upper surface side of the combustion port
A non-contact type temperature sensor for detecting the outer surface temperature of the side, and the outer surface of the container heated by the gas burner
For the surface temperature, set the outer surface temperature and the
Store the temperature difference from the cooked food temperature and
The heating cooking temperature is set up and the non-contact type temperature sensor is set.
Read out according to the outer surface temperature of the container detected by the
The food in the container by subtracting the temperature difference
Is calculated, and when the calculated temperature is lower than the set temperature,
In this case, the opening of the gas valve is
To increase the supply amount of fuel gas to the calculated temperature.
When the temperature is equal to or higher than the set temperature, the opening of the gas valve is reduced.
Reducing the amount of fuel gas supplied to the gas burner,
If the calculated temperature is higher than the set temperature for a predetermined time,
Supply of the fuel gas to the gas burner.
A heating cooking device comprising: a control unit for shutting off .