JPS63153328A - Automatic cooking appliance - Google Patents

Abstract

PURPOSE:To automatically perform a desired cooking while ensuring the safety by inputting control conditions corresponding to the desired cooking with the key board in accordance with the kind of cooking, and switching the heating intensity depending on the combination of temperature and time factors as the temperature of the bottom of a pot on which the food-stuff is placed. CONSTITUTION:An electronic control section 62 has therein a gas control means 62a that controls a gas control section 53 and an igniter 63, a key input reception and display as well as cooking menu determining means 62b that outputs the input signal from the key board as well as the display signal, and a timer control means 62C. Further, provisions are made for an A/D converter means 62D that converts the voltage from a temperature sensor 49 which detects the temperature of the bottom of a pot 64 in which the food-stuff is placed, a sensing means 62E that, based on the signal from the converter means 62D, determined the presence of an abnormal high temperature or a disconnection of the temperature sensor 49 etc., and a cooking determining means 62F that has a control sequence for each cooking menu order to control the temperature, time and heating intensity to suit the desired cooking based on the signal from the A/D converter similarly. Moreover, provision is made for a sensing means 62G to prevent a raw gas leakage.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is used in gas appliances such as gas staples and gas openers, and measures the temperature status of gas control parts such as motors and solenoid valves, and large temperature control units that touch the bottom of the pan. The present invention relates to an automatic cooker that controls the supply and stop of gas to a burner and the flow rate by an electronic control unit including a cooking means built into a microcomputer that creates the most suitable firepower state for various types of cooking.

2. Description of the Related Art In the gas staple of this type of conventional gas appliance, the fire power was controlled by manually rotating a gas cock to supply and stop gas to the gas burner, and adjusting the flow rate.

FIGS. 14 and 16 show the gas staple, which is equipped with gas burners 1 and 2 on the left and right sides, and a grill section 3 used for grilling fish and the like is provided between these burners. Then, operate the manual knobs 4, 5, and 6 on the front operation section to turn on the gas cock. , 8.9, open and close the left gas burner 1. Grill part 3. He was igniting and extinguishing the right gas burner 2 and adjusting the gas flow rate.

In addition, gas leak prevention and safety device thermo-remen) 10
a, 10b, 100. Safety valves 11a, 11b.

The reality is that some devices are equipped with 110.

In the figure, 12 is the top plate, 13 is the trivet, 14 is the grill door, 16
16 is the knob, and 16 is the exhaust hole of the grill portion 3.

Problems to be Solved by the Invention In this conventional gas stapler, the operation is very complicated because the knobs 1 to 3 are manually rotated to ignite and extinguish the gas by opening and closing the cock, and to adjust the gas flow rate by adjusting the degree of opening of the cock. ,
Moreover, it was difficult to control the firepower. In addition, in terms of safety, although raw gas leakage prevention devices using safety valves such as solenoid valves are installed, there are also devices to prevent tempura from burning, automatic extinguishing devices in case you forget to turn off the burner after leaving it unattended for a long time, and non-stick devices. There were no safety devices, and the temperature control function was used to automate various cooking processes, providing no convenience or security, and was only a means of allowing combustion.

The present invention solves the problems of the prior art described above, and aims to provide an automatic cooking device that uses gas or the like as a fuel and has various safety devices and an automatic cooking device.

Means for Solving the Problems In order to achieve the above object, the automatic cooking device of the present invention has a heating section for heating a pot containing food, an electronic control section that sends a signal to control the heating section, and an electronic control section for sending a signal to control the heating section. a heat source control section that operates in response to a signal from the heating section and controls the heat source supply to the heating section and the amount of heat thereof; and a keyboard for inputting control conditions suitable for cooking purposes to the heat source control section via the electronic control section. and a temperature measurement section that detects the temperature of the bottom of the pot and inputs the detection signal to the electronic control section, the electronic control section having an automatic rice cooking function section, a temperature adjustment function section, and a boiling detection function section.

It has a cooking timer function, a forget-to-turn-off prevention function, and an automatic tempura temperature control function.

Function The present invention has the above-described structure, and by inputting control conditions suitable for the purpose of cooking in the keyboard corresponding to the type of food placed on the pot, the temperature of the bottom of the pot containing the food is detected, and the temperature status is determined. By combining the time factor and the time factor, it is possible to switch the heat power according to the purpose and automatically achieve the desired cooking.

EXAMPLE Hereinafter, an example of the automatic gas cooker of the present invention will be described with reference to FIGS. 1 to 9. FIG. 1 shows an automatic cooking device according to the present invention, in which 17 is a horizontally long appliance body, and the left and right 3
Seven ports 19 and 20 are installed in parallel. The grill part 21 is provided at the lower part of the left stove 19 and against one left end of the appliance body 17. The grill section 21 has a door 23 with a knob 22 for putting in and taking out food on the front side of the appliance body, and has a combustion gas exhaust hole 24 opened at the rear central part of the top plate 18. The keyboard 26 is located on the right side of the instrument main body 17 via the grill section 21 and the heat insulating section 26 of a predetermined width. FIG. 2 is an enlarged view of the keyboard 26. The keyboard 25 is a gas control section 63 (details will be described later) that controls gas supply and stop to the left and right 37 ports 19° 2o and the grill section 21, and controls the gas flow rate. It is equipped with a plurality of keys etc. for inputting control conditions to an electronic control unit 62 including a microcomputer etc. that controls the control unit 62. The left and right ports 19.20 of the keyboard 26 and the grill section 21 are equipped with on/off keys 27, 28, 29, and large heat adjustment keys 27a, 2, respectively.
8a, 29a, heat power adjustment key 27b, 28b, 2
9b Combustion indicator lamp 27C9280, 290 is an indicator that also serves as a combustion indicator 1 for the left and right controllers and the grill section 21, as well as an indicator of the magnitude of the gas flow rate (the magnitude of the thermal power).
It is a pool.

The combustion indicator lamps 270, 280, and 290 each include:
Taking the left stove as an example, the gas control section 63° and the electronic control section 62 control the control heat in order to control the gas flow rate in five stages (from high heat to low heat). Set the stage, and when the firepower is at its maximum, the combustion indicator lamp 27
G: 6 lamps lit When the fire power is at its minimum, combustion will be displayed.
70 has one lamp lit 1. The lamp is turned off when combustion stops.

The right stove section 20 has an automatic cooking function, and an automatic rice cooking key 30. Automatic boil detection key 31.32.33゜34.35
, automatic temperature adjustment key 36, temperature setting knob 371, cooking timer display section 38 that also serves as a clock, time limit notification selection key 39
, a time-limited automatic extinguishing key 40, time setting keys 41, 42, and a clock setting key 43. The energization switch 44 is provided on the front surface of the instrument body 17 to prevent mischief use by children and to save electricity, and the operating lamp 46 is a lamp that indicates the energized state.

FIG. 3 is a gas and electrical circuit diagram. Left burner 46 of left stove 19. Burner 47 of grill section 21, right stove 2
The burner o has combustion detection sensors 46a and 4, respectively.
7 Otsu, 48&, ignition discharge electrode 46b, 47b, 48
The ignition discharge electrodes 4eb, 4ab, and 48b are connected to an igniter 63 controlled by an electronic control unit 62. On the right stove 2o, there is a temperature control panel with a touch type on the bottom of the pot.
There are 9. Hereinafter, regarding the gas control unit 63, each stove 19, 20 . Since it has the same structure as the grill portion 21, an example will be explained. A nozzle 61 is provided in the mixing pipe section 5o of the right stove burner 48, and the burner 48 of the right stove 2o is provided with a nozzle 61.
controls the maximum flow rate of gas supplied to the The nozzle 61 is connected to a gas control section 63 by a gas pipe 52.

The gas passes through the gas port 54, passes through the solenoid valve 55, and enters the right stove burner 48. The gas control unit 53 includes a gas flow rate control plate 56, a flow rate control body 67 that adjusts the gas flow rate by rotating, an encoder 68 that detects the rotation angle of the flow rate control body 570, and a motor 69. Control unit 62 and lead wire 60! L, connected at Sob.

Therefore, by pressing the ignition key 29 on the keyboard 260, a control signal is input to the electronic control section 62, and the signal from the electronic control section 62 causes the motor 59 to rotate and automatically adjust the flow rate up to the angle indicated by the encoder 68. Control body 67
As the solenoid valve 65 rotates and the solenoid valve 65 opens, a predetermined gas flow rate is supplied to the right stove burner 48. The solenoid valve 66 is connected to the motor 59. This is a safety measure designed to shut off the gas in the event of trouble such as a failure or disconnection of the encoder or lead wire, or in the event that power is not supplied due to a power outage and control becomes uncontrollable.

In the above embodiment, when the ignition key 29 of the keyboard 25 is pressed, a signal is input to the electronic control section 62. Then, a signal is sent from the electronic control section 62 to the gas control section 53, the motor 59 rotates, and at the same time the solenoid valve 66 opens. Encoder 58 also rotates. The rotation angle of the flow rate control body 57 and the gas flow rate control plate 5
6 is supplied to the right stove burner 48 through the nozzle 61. This gas is ignited and combusted by a spark from a discharge electrode 48b connected to an igniter 63 operated by a signal from one electronic control unit θ2. When you want to adjust the firepower, for example, when you want to reduce the firepower, press the firepower adjustment small key 29b and the control signal is input to the electronic control unit 62, while the previous rotation angle of the flow rate control body 67 is detected by the encoder 58. However, this angle detection is different from the angle at which the thermal power is reduced to low, so the electronic control unit 62 that confirms this sends a signal to the motor 59 to reduce the thermal power. A motor 69 rotates the flow rate control body 57 at a predetermined angle to adjust the thermal power to a small level. Of course, when the flow rate control body 67 rotates to a predetermined position, the power to the motor 69 is stopped.

Furthermore, when extinguishing the right stove burner 48, by pressing the ignition/extinguishing key 29, the electronic control unit 62. Since the signal is transmitted to the motor 69 and the position signal of the flow rate control body 57 from the encoder 58 is input to the electronic control unit 62, the flow rate control body 57 is rotated to a predetermined position.
This is to shut off the gas.

In the description of the above embodiment, ignition, extinguishing, and fire power adjustment were explained, but in this way, the gas flow rate can be opened and closed.

Since all the adjustments are made electrically, the present invention is equipped with a temperature sensor 49 to detect the temperature of the bottom of the pot 64 placed on the right stove 20, as shown in FIG. A signal is sent to the electronic control unit 62 to check the doneness, detect abnormally high temperature, and prevent tempura fire, and then to the motor 69.
The flow rate control body 57 can also be closed by rotating the . Originally, with a stove, various types of cooking were done based on experience and intuition, and the results of the cooking were subject to individual variations, but the present invention aims to combine the above and provide an automatic cooker that incorporates cooking know-how. It is. Therefore, a block diagram is shown in Fig. 5.

Inside the electronic control section 62 is a gas control section control means 62a that controls the gas control section 53 and the igniter 63 described above.

Keys for outputting input signals from the keyboard 26 and display signals to the keyboard 26 Human input reception, display control and cooking type determination means 62b, timer control means 62C1 Pot bottom for detecting the bottom temperature of the pot 64 containing food to be cooked A module that converts the voltage from the touch temperature sensor 49 into a digital signal.
D conversion means 62D1 Temperature abnormality detection means 62K that determines abnormally high temperature (tempura fire prevention), disconnection state of temperature sensor 49, etc. based on the signal passed through the M/D conversion means;
Similarly, a cooking determining means 62F is provided which has a control sequence for each type of cooking in order to control the temperature and firepower for one hour according to the signal result passed through the M/D converting means according to the cooking purpose. Further, it is provided with raw gas prevention sensing means 62G that detects the state of thermoelectromotive force of the right stove thermocouple 48m that detects the combustion state of the right burner 48 and prevents raw gas. As mentioned above, the present invention aims to provide an automatic cooking device that incorporates various means not found in conventional stoves in terms of cooking purposes, safety, etc. in the electronic control unit.

■One of them is the automatic rice cooking function. This device automatically cooks rice on the stove and incorporates a means to easily cook delicious rice. Delicious rice is cooked by simply putting washed and watered rice into a pot, placing it on the right stove 20, pressing the on/off key 29, and then pressing the rice cooking key.

In other words, it automatically determines the amount of rice to be cooked, automatically supplies heat that matches the amount of rice to be cooked, determines the boiling point, and after boiling, adjusts the boiling temperature to match the amount of rice to be cooked to maintain a long time to promote gelatinization of the rice. After switching to a later heating power to finish cooking, additional cooking can be performed to evaporate excess water.

The state is shown in FIGS. 6 and 7.

FIG. 6 shows various determination means of the rice cooking function section in the cooking determination means 62F, and in FIG. 7, the horizontal axis shows the elapsed time after ignition, and the vertical axis shows the heating power state and the pot bottom temperature ( Temperature sensor 49) curve is shown. After ignition, the pot bottom temperature curve shown by the solid line increases with time, and by the time it reaches 11 hours, the first rice cooking capacity determining means 66 determines whether or not the x1 temperature is reached. After ignition until the above state is reached, a constant calorie is supplied regardless of the amount of rice cooked. As a result of the determination by the first rice cooking capacity determining means 66, if x1 temperature has been reached, the heating power is not changed and the process goes to the second cooking rice capacity determining means 66, but if the temperature has not been reached, the heating power is increased and then the second The process proceeds to the rice cooking capacity determining means 66. 1 in the first cooking rice capacity determination means 66
If x1 temperature has not been reached in 1 hour, the second cooking capacity determining means makes a determination 66 that x2@degrees (90°C in this case) is determined as well as the time α1 when the pot bottom temperature reaches x1 temperature (go'c in this case).
) is the time difference in time α2 (α2−α+ ) =
Find K+.

The second rice cooking capacity determination means 66 is set to K in advance.

Depending on the value of K1, it is connected to the value of the control range of the five-step thermal power control shown in Figure 7 (if the value of K+ is small, the heating power is 6, if it is large, the heating power is 1), and the heating power is switched to the value of K1 after boiling. Become.

On the other hand, when the first cooking rice capacity determining means 65 reaches x1 temperature (in this case, 80 degrees Celsius) within 11 hours, the second cooking rice capacity determining means 66 determines that ) Find the temperature rise value after 2.

In this case, in the second rice cooking capacity determining means 66, the above-mentioned temperature rise value is connected to the value of the control range of the six-stage control of large power shown in FIG. If the value is large, the value of human power is determined as follows: 1) Based on the value of K2, the second cooking capacity determining means 66 determines the heating power, instructs the gas control unit control means 621L to change the manual power, and switches the power to the maximum power to cook the rice until it boils. Furthermore, if the temperature after a few seconds is extremely close to the boiling temperature, after boiling, the second cooking process is performed so that the human power (in this case, 1) is less than the 1st power (in this case, 3) used for the first rice cooking capacity determination 66. The capacity determination means 66 makes the determination.

As shown in Figure 7, the boiling temperature does not directly measure the temperature of the food being cooked (in this case, rice and water), but instead measures the temperature at the bottom of the pot, so the internal temperature may vary depending on the material and thickness of the pot. 'C, the temperature at the bottom of the pot will still be higher than 100°C.
There is a variation of about 7°C, and there is no guarantee that 100'C is the boiling point. In the present invention, we focus on the fact that when the temperature reaches the boiling point, the bottom temperature of the pot also becomes saturated.The boiling determining means 67 calculates the temperature difference (@degree gradient) in the bottom temperature of the pot every unit time, and the temperature gradient is constant. It is equipped with a means to determine that boiling has occurred when the temperature is below this value.

According to the above method, after the boiling determining means 67 determines that the rice has boiled, the gas controller controlling means 62a switches to the manual power after boiling determined by the second rice cooking capacity determining means 6e, and waits until the rice is cooked. When cooking, the water in the pot disappears, the bottom temperature of the pot rises rapidly, and the cooking pot determining means 68 determines that the temperature has reached x4 (in this case, 150'C), and the cooking temperature is set to the minimum heating power state. Normally, you can stop cooking rice at this stage, but excess water droplets will stick to the inside of the pot and the taste of the rice will deteriorate. Unfortunately, in this state, excess water still remains in the rice. In order to remove this moisture, the additional cooking is performed by the additional cooking determining means 69. The re-cooking determination means 69 has a 5-minute timer, and this timer operates after determining whether the rice has been cooked, and after 5 minutes, the re-cooking determining means determines the heating power that correlates to the heating power determined by the second rice-cooking capacity determining means θ6. With the firepower determined in 69, x3 temperature (in this case 1
The water will be cooked until the temperature reaches 20°C and the fire will be automatically extinguished.

In addition, for rice-cooked rice color plates (those that mix pressure oil, oil, etc.), additional cooking may not be performed as additional cooking may cause charring to occur. If additional cooking is not required, press the ignition/extinguishing key 29, press the rice cooking key 3o, and then press the rice cooking key again.The key manual reception display control and cooking input determination means will determine that the rice is being cooked. It makes it possible. Also, in this state, if you press the rice cooking key again, it will return to the rice cooking state. (Press to select repeatedly.) One of them is the temperature adjustment function.

Place the fryer on the right stove 2o, press the ignition/extinguishing key 29, and then press the temperature adjustment key 36.

Then adjust the temperature to the desired temperature using the temperature control knob 37. When using the cooking timer 38, press the notification key 39.
(Select and press one of the cut keys 40 (notify when the time is up and automatically extinguish the fire).

Notification key 39. The lamps 39a, 40& mounted in the cut key 4o are distinguished by blinking when the timer is operating, remaining lit until the set temperature is reached, and turned off when not in use.

Next, use the hour key 419 and the minute key 42 to set the desired cooking time.

In FIG. 8, the horizontal axis shows the elapsed time after ignition, and the vertical axis shows the temperature at the bottom of the pot, the firepower status, the timer status, and the status of various lamps. When the bottom temperature of the pot reaches the set temperature,
When the temperature notification lamp 36a in the temperature control key 36 changes from a blinking state to a lit state, a buzzer simultaneously sounds. At the same time, the cooking timer 38 starts operating and the lamp changes from a lit state to a blinking state. Cooking determination means 62 in the electronic control unit 62
The temperature control function section in F is set so that the temperature difference between the temperature state of the temperature sensor 49 and the set temperature is controlled within the temperature difference between β1 and β2 shown in Fig. 8). It has a function to maintain it while controlling it. For example, when the time set by the cooking timer for 3 days has passed under the above conditions,
If the cut key 40 is pressed, the fire will be automatically extinguished and a completion buzzer will sound.

Activating the cooking timer from when the set temperature is reached is a convenient way to use the timer because it coincides with the cooking time (time that does not include preparation time such as preheating a frying pan to the set temperature).

■One of them is the boiling detection function.

Place the pot containing food on the right stove 20 and press the extinguish key 29
For example, press the automatic boil detection key 33. Then, the cover 33a of the automatic boil detection key 33 blinks. When using the cooking timer 38 before or after, press the notification key 3.
Select and press either the cut key 9 (notify when the time is up) or the cut key 40 (notify when the time is up and automatically extinguish the fire). For example, press cut key 4°, hour key 4
Press the 11 minute key 42 to set the desired time. By performing the above operation, the temperature sensor 49 detects the temperature at the bottom of the pot, and when the food boils, the key lamp 3 will automatically turn on.
3a lights up and the fire power is reduced from high (fire power 5) to a calorie of just under 20 as shown in Figure 9. From that point on, the cooking timer 38 begins to operate and when a predetermined set time has elapsed, the cooking timer 38 automatically turns off and a completion buzzer sounds. It has the effect of informing you.

The state is shown in FIGS. 9 and 10.

FIG. 10 shows various determination means of the boiling detection function section in the aforementioned cooking determination means 62F. In FIG. 9, the horizontal axis shows the elapsed time after ignition, and the vertical axis shows the heating power state, the pot bottom temperature, Indicates the temperature of the food being cooked.

As shown in the temperature curve of the food to be cooked, as shown in FIG. 9, even if the temperature of the food to be cooked reaches 100°C, the bottom temperature of the pot remains around 106°C, as shown in the pot bottom temperature curve. This occurs easily when the pot is used under normal conditions, and the temperature at the bottom of the pot is 102 to 120'C.
The degree of cooking varies depending on the thickness of the pot, the material, the type of cooking, etc.

However, in most pots, when the temperature of the food being cooked saturates at 100°C, the temperature at the bottom of the pot also saturates at a slightly higher temperature. The intersection point α of the temperature rise curve until boiling in the pot bottom temperature curve and the boiling point α indicates the boiling point for boiling detection. (
The boiling temperature detection means 70 is omitted because it is different from the content of the present invention. ) From this boiling point α, the temperature just before the food starts to burn (e.g. 116°C) KG to the boiling point of the food (
In this case, the temperature difference minus 100°C (in this case, 1saa
g) temperature (boiling point α + 15deg) value KG'
The non-stick determination means 7 determines that the temperature is the non-stick temperature.
1 and has a function of automatically extinguishing the fire and alerting with a buzzer when it reaches a predetermined temperature KG'.

Therefore, if the cooking timer 38 is used and the timer is set longer than necessary, and the non-stick temperature KG' is reached earlier than the cooking timer time, the fire will be automatically extinguished.
This means that the cooking timer can be used with peace of mind. Also, the setting of the cooking timer is the same as the temperature adjustment function, so it will be omitted.

■One of them is the water boiling function.

As a result of conducting a usage survey of 20 units/drink, it was found that the most frequently used function was the water boiling function.

In other words, the function is to extinguish the fire when the water boils.

When the ignition/extinguishing key 29 is pressed, the key manual reception display control and cooking input determination means 62b in the electronic control section 62 shown in FIG. 6 automatically determines the boiling mode, and the boiling detection function section in the cooking determination means 62F is activated. The state is set to the same state (initial state) as when the kettle key 31 is pressed. Therefore, the most frequently used water boiling function can be performed with a single touch.

V. One of them is the cooking timer function.

As explained in the boiling detection function and temperature adjustment function, the cooking timer function starts operating after the cooking timer 38 is set in advance and reaches the boiling point or the set temperature. Use it as a regular stove (see Figure 11). That is, when the ignition/extinguishing key 29 is pressed and the fire power adjustment large key 29a and the fire power adjustment small key 29b are pressed, the key human power reception display control and cooking input determination means 6
2b is determined to have the normal stove function, and the state shown in FIG. 11 is reached. In FIG. 11, the horizontal axis shows the elapsed time from ignition, and the vertical axis shows the temperature, thermal power state, and timer state. After ignition, the bottom temperature of the pot rises due to the right stove burner 48 and reaches a boiling state. To reduce the firepower, press the key manual reception display control and cooking input determination means 62b and the firepower adjustment small and large keys 29.
b, 29a, and a fire power adjustment indicator lamp. When you press the firepower adjustment small key 29b, the number increases by 1 each time you press it.
Each step steps down from 6 firepower to 1 firepower. Further, the fire power status is displayed on the fire power adjustment display lamp 290. To increase the firepower, use the same firepower adjustment key 29.
Do it with a.

When used in the above-mentioned normal stove function, the timer control means 620 in the electronic control section 62 will start operating from the time when the cooking timer has been set.

In consideration of safety, when the cooking timer 38 is not in use, the timer control means 620 is activated when the right stove 20 is used, that is, when the ignition/extinguishing key 29 is pressed.
After determining that two hours have elapsed, a signal for automatically extinguishing the gas is sent to the gas control unit control means 621L to automatically extinguish the gas.

In other words, it has a timer function to prevent forgetting to turn it off.

The timer control means 620 also includes a cooking timer priority means when the cooking timer 38 is set for two hours or more.

Even when the right stove 2o is used in the above-mentioned normal stove mode, in order to prevent abnormal temperatures such as tempura, the input from the temperature sensor 49 is connected to the temperature abnormality sensing means 62K after passing through the M/D converting means 62D. The abnormal state of the temperature sensor 49 (abnormally high temperature, sensor disconnection, etc.) is constantly checked, and when an abnormality occurs, an abnormal signal is sent to the gas control unit control means 62 & to automatically extinguish the fire. Therefore, it cannot be used in a normal stove state. The system is designed to prevent accidents caused by abnormal overheating, such as tempura fires, even if the temperature is low.

■One of them is the automatic tempura temperature control function.

In order to fry tempura well, it takes about 160 ounces depending on what you are cooking.
A major factor is always to obtain the most suitable temperature between ~180'C. However, in the method of detecting the temperature at the bottom of the pot, as shown in Figure 4, the difference between the oil temperature and the bottom temperature is large, and the desired temperature cannot be obtained depending on the amount of oil. It is. In other words, the difference between the bottom temperature of the pot and the temperature of the oil varies depending on the material, thickness, and amount of oil of the pot, and an important condition is to match the oil temperature to the target temperature.

FIGS. 12 and 13 show specific implementation means. FIG. 13 shows the execution means of the tempura temperature automatic control function section of the cooking determination means 62F shown in FIG. 6, and the pot 64 shown in FIG. The temperature state is transmitted by the temperature sensor 49 to the cooking determination means 62F through the M/D conversion means 62D. 1st
The tempura temperature control function section of the cooking determining means 62F in FIG.

In Figure 12, the horizontal axis shows the elapsed time from the time of ignition, and the vertical axis shows the state of firepower, the temperature of the bottom of the pot, and the temperature of the oil/temperature, respectively. As shown in the pot bottom temperature curve above, increase the oil temperature to 15°.
In order to match C, the bottom temperature of the pot must be αdeg higher 1
It is necessary to set the temperature to 5°C. For example, this temperature difference αdog is about 40 deg when the aluminum thickness is 4n and the oil amount is 11.
becomes.

In other words, when the oil temperature is set to 1800, the pan bottom temperature (set temperature of the pan bottom touch type temperature sensor 49 must be adjusted to 220 degrees.Also, if the iron thickness is 1.2n and the oil amount is 11, the oil temperature is set to 1800. It is clear from experimental results that it is sufficient to adjust the angle to 182°.

When the pot bottom temperature and the oil temperature are both ignited at the toO temperature, after 1 second has elapsed, the pot bottom temperature becomes tlo and the oil temperature becomes 01°, resulting in a temperature difference Δt1. Also, the pot bottom temperature curve bends from A1 seconds to M2 seconds, and this tendency is more noticeable in pots with thick pot bottoms that have good heat conduction. The mechanism of this occurrence is
The thermal conductivity of oil is about the same as that of water, and the specific heat is about twice that.
These things appear as a temperature rise curve at the bottom of the pot that differs from the heating state of water.

In other words, when using a thick pot made of a material with good thermal conductivity, the heat from heating the pot is more consumed as heat to make the bottom of the pot uniform than it is transferred to the oil at the time of ignition, and the above-mentioned temperature difference Δt1 It will appear in a big way. Furthermore, the fact that the temperature curve at the bottom of the pot does not rise linearly but curves is due to dew condensation, which usually occurs around 0°C. On the other hand, in a thin pot with poor heat conduction (for example, stainless steel 0.5FF), a small proportion of the heat from the right stove burner 48 is transmitted from the pot to the center of the bottom of the pot, and more of it is consumed to raise the temperature of the oil. Therefore, the temperature difference Δt
1 becomes smaller. From the above, the temperature rise until the pot bottom temperature curve bends, that is, t, -tQ, is set in the primary assembly type determination means 72 as a coefficient representing the material thickness of the pot as the primary assembly type determination. Ru. The pot bottom temperature t2° at the time when 2 seconds have elapsed also has a large difference from the oil temperature 02. (t2
to) and (tz tt) are also set in the secondary set type determination means 73 as secondary set type determination coefficients. Next, the pan bottom temperature rises to tS + t4°, but between the oil temperature 05 when the pan bottom temperature reaches t3, the pan bottom temperature t4° and oil temperature 04 when 54 seconds have passed since then, t4 - ts = Δt2
, 04-03=Δt2, that is, the temperature rise per unit time is the same. In other words, we discovered that a temperature range in which the pot bottom temperature curve and the oil temperature curve rise in parallel occurs in a fixed oil temperature range, regardless of the pot or the amount of oil. t4-15 is the same as the temperature rise of the oil temperature, and if the burned calories are constant, the temperature difference between t and -t5 is correlated with the oil amount, and is used as the oil amount coefficient by the oil amount determining means 74. is set. The comprehensive temperature difference determining means 76 performs arithmetic processing on the coefficients set by the primary assembly type determining means 72, the coefficients set by the secondary assembly type determining means, and the coefficients set by the oil amount determining means 74. Then, calculate the temperature difference α between the oil temperature and the bottom temperature of the pot. Then, a process is performed in which a corrected temperature obtained by adding the temperature difference α to the temperature set by the temperature setting knob 37 is set as the set temperature.

By arranging the above means, the oil temperature and the bottom temperature of the pot can be made to match, and a pot used in a general household can be used immediately without limiting the amount of oil or the type of pot.

That is, the ignition/extinguishing key 29 is pressed, and then the temperature adjustment key 36 is pressed. In this state, the temperature control lamp 36a blinks, but if you press the temperature control key 36 again, the key manual reception display control and cooking input determination means will make a determination, and the tempura/pull
b blinks, and a signal indicating that the tempura temperature automatic control function is activated is sent to the cooking determination means 62F. When the right cooking stove burner 48 burns and reaches the set temperature after a period of time, a notification is given and the appropriate temperature for the tempura is obtained.

In order to achieve the above-mentioned purpose, the thermal power and time diagram in Fig. 12 shows that the thermal power of the right cooking stove burner 48 is set at high heat to burn up to the set temperature. In order to maintain the set temperature after reaching the set temperature, high heat and low heat are controlled through the salt control section 53.

Note that the use of the timer is the same as described above, so it will be omitted. Further, the pot bottom temperature and time elapsed from the time of ignition include the time elapsed from the time of the ignition operation and from the time when the right stove burner 48 was ignited. The ignition detection method will be omitted in the present invention.

■One of them is a timer that emphasizes safety and prevents users from forgetting to turn it off. Naturally, the frequency of use of the left and right 37 mouths 19, 20 and the grill 21 and the time of use each time vary depending on the content of cooking. In the present invention, each stove 19.20
The grill 21 is equipped with a pre-built timer for each combustion part that operates from the time of ignition, and when the time set for each combustion part has elapsed according to the individual usage situation, the fire is automatically extinguished and notified, thereby preventing accidents caused by forgetting to turn it off. It is designed with an emphasis on safety, including a device to prevent users from forgetting to turn it off.

To explain the left side/port 19 as an example, when the on/off key 27 is pressed, the key manual reception display control and cooking input determination means 6
2b, a signal is input to the timer control means 62c, and a left stove timer section (not shown) in the timer control means counts until a predetermined predetermined time is reached, and when the predetermined time elapses, the fire is extinguished. The structure is such that the signal is sent to the gas control 6 section control means 62a to automatically extinguish the fire.

Although the above embodiments have been described using gas burners that use gas as a heat source, the technical concept of the present invention can also be applied to electric stoves that use electricity as a heat source.

Effects of the Invention As described above, the present invention includes a heating unit that heats a pot containing food to be cooked, an electronic control unit that sends a signal to control the heating unit, and a control unit that operates based on a signal from the electronic control unit, and a heat source control section for controlling the supply of heat source to the heating section and the amount of heat thereof; a keyboard for inputting control conditions suitable for the purpose of cooking to the heat source control section via the electronic control section; and a keyboard for detecting the temperature of the bottom of the pot; The method includes a temperature measurement section that inputs a detection signal to the electronic control section, and the electronic control section includes an automatic rice cooking function section, a temperature adjustment function section, a boiling detection function section, and a cooking timer function section.

Since it has a forget-to-turn-off prevention function and an automatic tempura temperature control function, the following effects can be expected.

(1) It has the effect of having a temperature regulating function.

The function of cooking by adjusting the temperature is conventionally known as oven cooking, but by adding this function to the 27-inch oven, it is possible to prepare cakes, etc. simply, easily, and in a short time (less preheating time). In addition, cleaning after use can be done quickly, so it can be very effective.

In addition, by combining it with a cooking timer, you can easily make it without failure, and in particular, since the cooking timer has a function that starts operation after notifying that the set temperature has been reached, the cumbersome operation can be eliminated.

(2) This is the effect of having an automatic rice cooking function. With 27 pots, you can cook delicious rice in a regular pot. Since the heat power that matches the amount of rice to be cooked is automatically selected, you can cook rice with confidence without boiling over or leaving the rice uncooked.
It also has two rice cooking modes, so you can use it depending on your purpose.

Because of the above, there is no need for a dedicated rice cooker, and the installation space can also be omitted, making effective use of the kitchen space.

(3) This is an effect of having a boiling detection function.

According to a survey, 86 people use the stove to boil water, boil food, steam food, etc. By automatically determining the boiling point, once the water boils, the heat power is automatically switched to the preset heat power (High, Medium 9 Low, 9 Low Low, Stop) to prevent boiling over and save energy. I can demonstrate it. In addition, with the non-stick feature activated, you can enjoy cooking dishes that need to be boiled down automatically. In addition, when combined with a cooking timer, it becomes possible to set the contents in advance according to the instructions in cookbooks such as ``Once it boils, simmer it over low heat for several minutes'', which frees you from the hassle and at the same time allows the non-stick device to work. Therefore, it has the great effect that even if you cook for a long time, it will not burn and you can use it with confidence.

(4) It has the effect of having a water boiling function.

As mentioned above, the water boiling function is used most often while using the stove, and it is a convenient function that automatically turns off the water once the water has boiled, just by igniting it. In other words, the most frequently used mode can be automatically set, so when you use the boiling function, you can prevent over-boiling, empty cooking, etc., save energy, prevent equipment damage, and have the function of notifying you when it boils. ing.

(6) This is an effect of having a cooking timer function.

The right side/mouth has an automatic cooking function that can be used in conjunction with a cooking timer to automate various cooking operations.

If you forget to turn off the cooking timer, by giving it priority over the timer, you can automatically turn off the 2-hour timer and improve usability.

In addition, when using a cooking timer, a non-stick safety device is activated when boil detection occurs, and a high-cut safety device is activated when using a regular stove, temperature adjustment function, or automatic tempura temperature control function to ensure safety in the event that the cooking timer is used incorrectly. There is.

(6) It has the effect of having a function to prevent forgetting to turn off the light.

In accordance with the average usage time of the stove or grill, by extinguishing it after heating for a certain period of time from the time of ignition, you will waste the heat source due to forgetting to turn it off, and prevent accidents such as burns due to abnormal overheating of the appliance.
It also has the effect of preventing the occurrence of fires, etc.

(7) An advantage of having an automatic tempura temperature control function.

You can easily obtain the appropriate temperature for tempura at any time using a handheld pot without being affected by the type, thickness, and oil amount of the pot.

(8) This is the effect of having various safety devices.

Various safety devices are required depending on the usage conditions of the stove. The fire safety device of this appliance automatically prevents raw gas from flowing out when the burner boils over or misfires due to strong wind, etc., and prevents gas leak accidents in advance.

At the same time, a function to notify with a buzzer and LE of the corresponding firepower display
D will flash to notify you.

The high-cut safety device is a function that automatically extinguishes the fire when the temperature of the temperature sensor attached to the right stove reaches 260 degrees Celsius.

It is automatically set when the tempura temperature automatic control function is activated, and has the function of automatically extinguishing the fire and notifying you with a buzzer and CD.

It plays a role in preventing fires in the unlikely event that the cooking timer is set for a long time by mistake or the timer malfunctions.

The non-stick device works automatically when the boil detection function is used and can be used for non-stick cooking.

In addition, when using a cooking timer, it will prevent the food from burning if you accidentally set it for a long time or the timer malfunctions.
It has the feature of not damaging pots, etc.

The forget-to-turn-off prevention device automatically extinguishes the fire after a certain period of time has passed from the time of ignition.
Saves energy and prevents equipment from overheating.

It has effects such as preventing burns.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a gas stapler that employs an electronic control unit, gas control body, and cooking means according to an embodiment of the present invention, Fig. 2 is an enlarged front view of the operation panel, and Fig. 3 is the gas supply. Control circuit diagram, Fig. 4 is a sectional view of the relative positions of the pot, temperature sensor, and burner, Fig. 6 is a block diagram of the automatic cooking control, Fig. 6 is an explanatory diagram of the cooking judgment means, and Fig. 7 is the same. Figure 8 is a diagram of the relationship between the temperature control mode and cooking timer, Figure 9 is a diagram of the relationship between boiling detection, cooking timer, and firepower status, and Figure 10 is the diagram of the relationship between the temperature control mode and cooking timer. An explanatory diagram of the determination means, FIG. 11 is a diagram of the relationship between the temperature state, firepower state, and cooking timer in the same ordinary stove mode, FIG. 12 is a diagram of the relationship between the firepower and various temperatures in the tempura mode, and FIG. 13 is the same cooking judgment. An explanatory diagram of the means, FIG. 14 is a perspective view of a conventional gas staple, and FIG. 16 is a diagram of the same gas supply circuit. 26... Keyboard, 48... Heating section (burner) 49... Temperature measurement section, 53... Heat source control section (gas control section), 62... ...Electronic control unit, 62F...Cooking determination means. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure f7- Shio group m7 Figure 8 Uke 1 Kai- Figure 9/Q'/1 Figure 11/g 搏閏□ Figure 12 @ Figure 14

Claims (1)

[Claims] A heating part that heats a pot containing food to be cooked; an electronic control part that sends a signal to control the heating part; and a heating part that operates according to a signal from the electronic control part to control the heat source supply to the heating part and the amount of heat thereof. a keyboard for inputting control conditions suitable for cooking purposes into the heat source control section via the electronic control section; and a measuring device for detecting the temperature of the bottom of the pot and inputting the detection signal to the electronic control section. An automatic cooker comprising a heating section, the electronic control section having an automatic rice cooking function section, a temperature adjustment function section, a boiling detection function section, a cooking timer function section, a forgetting-to-turn-off prevention function section, and a tempura temperature automatic control function section.