JPH08105629A - Cooking device - Google Patents

Abstract

PURPOSE: To avoid a shortage or an excess of heating intensity in the case the temperature of a food to be cooked is below or above a specified temperature against an equilibrium temperature, by heating the food under specified conditions. CONSTITUTION: A gas table A has a time controller 32 (boiling maintaining controller) that allows an M burner 13 to repeatedly combust at gentle-strong flame, alternately, and a temperature controller 34. In the case the detected temperature Th of a food 11 to be cooked drops, and (Th < equilibrium temperature TH-5 deg.C) (= specified temperature x) is established after the time controller 32 is brought in operation, the temperature controller 34 opens a temperature control solenoid valve 133 until (Th>=TH+w) (provided w<0, w=-2 deg.C, for example) is established and the M burner 13 is allow to combust at strong flame. In the case the temperature of the food 11 rises and (Th<=TH+10 deg.C) (= a specified temperature y) is established the temperature control solenoid valve 133 is closed until (Th<TH+8 deg.C) (a specified temperature z) is established and the M burner 133 is allowed to burn at gentle flame.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking device for boiling and cooking an object to be cooked in a cooking container.

[0002]

2. Description of the Related Art In a conventional cooking apparatus, a user monitors boiling of an object to be cooked in a cooking container, and when the user recognizes the boiling, the heating power is weakened manually to simmer the object to be cooked.

[0003]

However, in the conventional cooking device, it is troublesome to monitor the boiling point and the heating power must be manually adjusted. It takes time and effort to adjust,
In addition, it has to be adjusted depending on the intuition of the user, and it is difficult to obtain a suitable heating power. For this reason, the inventors have found that the gas burner for heating the cooking container containing the food to be cooked, the temperature sensor for detecting the temperature of the food to be cooked, and the rising speed of the detected temperature Th detected by the temperature sensor are small. And boiling detection means to determine that the cooking object is in a boiling state, the gas burner after boiling determination, weaker than before boiling,
In addition, a heating device capable of maintaining the boiling state was experimentally obtained, and a cooking device equipped with a boiling maintaining control means operated by the heating force was prototyped. However, when the food to be cooked is added after boiling, or depending on the type of the food to be cooked or the cooking container, the heating power becomes insufficient during the operation of the boiling maintenance control means, and the temperature of the food to be cooked is higher than the temperature in the boiling state. It has been found that proper cooking cannot be performed because the food becomes too low, or the heating power becomes too strong and the temperature of the food becomes too high to partially boil the food. The purpose of the present invention, the heating source after boiling determination, weaker than before boiling, and in a cooking device having a boiling maintaining control means for operating with a heating power for maintaining a boiling state, heating power shortage or heating power excess does not occur, always,
The object of the present invention is to control the temperature of the food to be cooked appropriately and keep it in a boiling state so that the cooking can be done efficiently.

[0004]

In order to solve the above problems, the present invention provides a heating source for heating a cooking container containing an object to be cooked, and a temperature sensor for detecting the temperature of the object to be cooked.
When the rising speed of the detected temperature Th detected by the temperature sensor becomes small, the boiling detection means for determining that the cooking target is in a boiling state, the heating source after the boiling determination is weaker than before boiling, and a boiling maintained control means for actuating the heating power for maintaining the boiling state, after boiling determination, the detected temperature Th becomes equilibrium, i.e., any time an equilibrium temperature T _H, and the equilibrium temperature detecting means for detecting the boiling maintain control after actuation means, turned down the detected temperature Th, the detected temperature Th <equilibrium temperature T _H - when a predetermined temperature x is a detected temperature Th ≧ equilibrium temperature T _H + predetermined temperature w (where w <0) until the heating source, it is operated with a strong heating power than the heating power by the boiling maintenance control means, also up the detected temperature Th, when the detected temperature Th ≧ equilibrium temperature T _H + predetermined temperature y is detected Temperature Th <
The temperature control means for operating the heating source with a heating power weaker than the heating power by the boiling maintenance control means is adopted until the equilibrium temperature _TH + predetermined temperature z (where y> z).

[0005]

The function of the heating source is to heat the cooking container containing the material to be cooked. The boiling detecting means determines that the object to be cooked is in a boiling state when the rising speed of the detected temperature Th decreases. After the boiling determination, the boiling maintenance control means activates the heating source with a heating power that is weaker than before the boiling and maintains the boiling state. After boiling determination, equilibrium temperature detecting means detects the temperature Th which became an equilibrium state, i.e., any time the equilibrium temperature T _H, detects.
Temperature control means, after operation of the boiling maintenance control means, and lowered the detected temperature Th, the detected temperature Th <equilibrium temperature T _H - when a predetermined temperature x is the detected temperature Th ≧ equilibrium temperature T _H + predetermined temperature w (where w <0) a heat source until actuates a strong heating power than the heating power by boiling maintenance control means, also up the detected temperature Th, the detected temperature Th ≧ equilibrium temperature T _H + predetermined temperature y If made, the detected temperature Th <equilibrium temperature T _H +
The heating source is operated with a heating power weaker than the heating power by the boiling maintaining control means until the temperature reaches the predetermined temperature z (where y> z).

[0006]

Temperature control means according to the present invention after operation of the boiling maintenance control means, and lowered the detected temperature Th, the detected temperature Th <equilibrium temperature T _H - when a predetermined temperature x is the detected temperature Th ≧ equilibrium temperature T _The heating source is operated with a heating force stronger than the heating force by the boiling maintaining control means until _H + predetermined temperature w (however, w <0) is reached, and the detected temperature Th rises to reach the detected temperature Th.
When ≧ equilibrium temperature _TH + predetermined temperature y, the detected temperature T
The heating source is operated with a heating power weaker than the heating power by the boiling maintaining control means until h <equilibrium temperature _TH + predetermined temperature z (however, y> z). For this reason, even if you add items to be cooked after boiling or change the type of items to be cooked or cooking containers,
The food to be cooked does not suffer from insufficient heating power or excessive heating, and is constantly maintained in a boiling state, and is controlled to an appropriate temperature at which no charring occurs, so that efficient cooking can be performed.
Incidentally, w in the detected temperature Th ≧ equilibrium temperature T _H + predetermined temperature w
Since <0, it is possible to prevent excessive heating when cooking with poor fluidity such as curry or stew, and to prevent spillage and burning due to excessive heating.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1 and FIG. 2, the gas table A is a pan 1 containing an object to be cooked 11 such as curry ingredients.
Boiling with a left stove 1 for heating a container to be cooked such as 2, a temperature sensor 2 with a built-in thermistor arranged to press the bottom of the pot, a timer T for judging the amount of the object to be cooked, and a timer Ta small fire detection unit 31, M burner 13 - time control means (boiling maintain control means) to burn alternately and repeatedly in fire 32, the equilibrium temperature detecting means 3 for detecting the equilibrium temperature T _H
3 and the control unit 3 having the temperature control means 34 and to which the electric output of the temperature sensor 2 is input. Also,
The gas table A comprises a right stove 4 with an H burner 41 having a gas consumption of 4100 kcal / h and a 1950.
It also comprises a grill 5 having a grill burner 51 with a gas consumption of kcal / h.

The left cooking stove 1 has an M burner 13 having a gas consumption of 2300 kcal, and is installed on the left side in the figure. The M burner 13 has an ignition electrode 1 for ignition.
4, and a thermocouple 15 that generates an electromotive force by being burned by the combustion flame 10 is disposed facing the surface. Further, in FIG. 2, 131 is a safety valve arranged in the gas pipeline 132, and 133 is a main gas pipeline 1 branched from the gas pipeline 132.
The temperature control solenoid valve is arranged in the main gas line 134 of the sub gas line 135 and the sub gas line 135. Incidentally, the temperature control solenoid valve 133
When the valve is closed, the M burner 13 has a small fire, and when the valve is open, the M burner 13 has a large fire.

The timer T starts counting when the detected temperature Th detected based on the electric output sent from the temperature sensor 2 reaches 80 ° C., and counts when the detected temperature Th reaches 90 ° C. By stopping, the time Δt required until the detected temperature Th rises from 80 ° C to 90 ° C is measured.

The boiling detecting means 31 detects that the detected temperature Th is 90
It has a timer Ta for measuring the time ta required to rise every 1 ° C. from 0 ° C., and the required time ta is the judgment value tk =
When (3 × Δt + 25) / 11 or more and the rising speed of the detected temperature Th becomes extremely small, it is determined that the cooked material 11 such as curry ingredient is in a boiling state, and the detected temperature Th at the boiling determination is Boiling detection signal 3 including values and required time Δt
10 is sent to the time control means 32 which is the boiling maintaining control means (see FIGS. 2 and 3).

The time control means 32 generates a boiling detection signal 310
Is input (when the boiling detection means 31 determines the boiling state), the M burner 13 is changed to a heating power weaker than that before the boiling. That is, when the required time Δt is less than 24 seconds and it is determined that the amount of the food 11 is small, M
When the burner 13 is burned alternately with a small fire for 20 seconds and a large fire for 3 seconds, the required time Δt is 24 seconds or more, and when it is determined that the amount of the food 11 is large, the M burner 13
Burn for 20 seconds with a small flame and then for 5 seconds with a large flame alternately.

The equilibrium temperature detecting means 33 has a boiling detection signal 31.
0, the detection temperature Th is 100 ℃ or more and 200 ℃
Every 15 seconds if within the equilibrium measurement range of less than
The latest value of the detected temperature Th that is
The value Tn of the sampled detected temperature Th is set to Tn._-2And
If (Tn-Tn_-2) Is −2 ° C. ≦ (Tn−Tn_-2) ≤
Condition 2 is to meet 2 ℃ continuously 7 times, and condition 1 is satisfied.
The 7th Tn _{H '}And condition 1 was met first
Tn of time_-2Is Ts, (T_{H '}-Ts) is -4 ° C
≤ (T_{H '}-Ts) ≦ 4 ° C. is set as condition 2, and
When both cases 1 and 2 are established, the T_{H '}The value of
Equilibrium T_HAnd Note that conditions 1 and 2 are both satisfied.
Then, the value of the detected temperature Th at the time of boiling judgment is set to the equilibrium temperature T_Hage
I am treating it. Further, in this embodiment, the conditions 1 and 2 are both
Approved once, T_{H '}Value of equilibrium temperature T_HEven that T
_{H '}Lower T_{H '}Is detected, the equilibrium temperature T_HThe lower
T_{H '}Has been updated to. In addition, the detected temperature Th is the equilibrium measurement range.
Equilibrium temperature T calculated last time when going out_HMemorize
Every time, when the equilibrium measurement range is entered again, that value is used
are doing.

After the operation of the time control means 32, the temperature control means 34 lowers the detected temperature Th, and the detected temperature Th becomes Th.
< _TH −5 ° C. (= predetermined temperature x), Th ≧
The temperature control solenoid valve 133 is opened to burn the M burner 13 to a large flame until T _H + w (where w <0; for example, w = −2 ° C.), and the detected temperature Th rises and the detected temperature Th rises. When Th ≧ T _H + 10 ° C. (= predetermined temperature y),
Th <T _H + 8 ℃ closes the (= predetermined temperature z) become to temperature control solenoid valve 133 is small fire burning the M burner 13.

Next, the operation of the control unit 3 having a microcomputer will be described with reference to FIGS. 3 and 4. The user presses the stew key 61 on the operation panel 6,
The point / fire extinguishing knob 16 is pressed to close the switch 17, and the safety valve 131 and a main valve (not shown) arranged downstream of the safety valve 131.
When the valve is mechanically opened, the control unit 3 energizes the safety valve 131 and the temperature control solenoid valve 133 to bring the valve into an open hold state and energizes the ignition electrode 14.
The M burner 13 is ignited and starts burning. Step s1
In, the microcomputer of the control unit 3 is
It is determined whether the detected temperature Th has reached 80 ° C. (position P1 in FIG. 3). If Th = 80 ° C. (Yes), the process proceeds to step s2. In step s2, the timer T is started, and the process proceeds to step s3. In step s3,
It is determined whether the detected temperature Th has reached 90 ° C. (position P2). If Th = 90 ° C. (Yes), the process proceeds to step s4. In step s4, the timer T is stopped, the value of the variable t is stored as the required time Δt, and the judgment value tk
Is calculated as tk = (3 × Δt + 25) / 11, the timer Ta is started, and the process proceeds to step s5. Step s
5, it is determined whether or not the detected temperature Th has risen by 1 ° C., and if it has risen by 1 ° C. (Yes), the process proceeds to step s6 and the required time ta required for raising by 1 ° C. is the judgment value t.
If it is less than the determination value tk (N
o), it progresses to step s7, and when it is more than the judgment value tk (Yes), it progresses to step s8 (it judges that a to-be-cooked object is in a boiling state). It is determined that ta ≧ tk (position P
3) If the equilibrium temperature detecting means 33 is operated as described above to detect start the equilibrium temperature T _H, thereafter, until the conditions 1 and 2 are satisfied together, the value of the detected temperature Th at the boiling determination treated as an equilibrium temperature T _H, when the conditions 1 and 2 are both satisfied, the value of the T _{H 'and} the equilibrium temperature T _H (position P4). In step s7, the timer Ta is restarted, and the process returns to step s5. In step s8, the detected temperature Th
Time required for the temperature to rise from 80 ° C to 90 ° C is 24
It is determined whether or not it is less than seconds, and if Δt <24 seconds (Ye
s), the process proceeds to step s9, and if Δt ≧ 24 seconds (N
o), the process proceeds to step s16. In step s9,
For 20 seconds, the energization to the temperature control solenoid valve 133 is stopped, the temperature control solenoid valve 133 is closed to set the M burner 13 to a low heat, and for the next 3 seconds, the temperature control solenoid valve 133 is energized to control the temperature. The solenoid valve 133 is opened, the M burner 13 is set to a large fire, and control is repeated alternately, and the process proceeds to step s10. In step s10, the detected temperature Th is determined whether or not Th <T _H -5 ℃, a Th <T _H -5 ℃ (position P5)
If (Yes), the process proceeds to step s11, and Th ≧ T _H −
If the temperature is 5 ° C. (No), the process proceeds to step s13. In step s11, the temperature control solenoid valve 133 is energized, the temperature control solenoid valve 133 is opened to set the M burner 13 to a high fire, and the process proceeds to step s12. In step s12, it is judged whether or not the detected temperature Th is Th ≧ T _H + w (where w <0; for example, w = −2 ° C.), and Th ≧ T _H + w.
(However, w <0; for example, w = −2 ° C.) (Ye
s), returning to step s9, Th <T _H + w (where w <
0; for example, w = −2 ° C.) (No), the process returns to step s11. In step s13, the detected temperature Th
Th ≧ T _H + 10 ° C. is judged, and Th ≧ T _H +10
If the temperature is C (position P6) (Yes), step s14
Proceeds, if it is _{Th <T H + 10 ℃ (} No), the flow returns to step s9. In step s14, the energization of the temperature control solenoid valve 133 is stopped, the temperature control solenoid valve 133 is closed to set the M burner 13 to a low heat, and the process proceeds to step s15.
In step s15, the detected temperature Th is Th <T _H +
Determines whether the 8 ° C., a Th <T _H + 8 ℃ (Position P7) if (Yes), the process returns to step s9, Th ≧
If T _H + 8 ° C. (No), the process returns to step s14. In step s16, the energization of the temperature control solenoid valve 133 is stopped for 20 seconds, the temperature control solenoid valve 133 is closed to set the M burner 13 to a small fire, and the temperature control solenoid valve 133 is energized for the next 5 seconds. Then, the temperature control solenoid valve 133 is opened and M
The burner 13 is set to a high fire and the same control as in steps s10 to s15 is performed.

Hereinafter, advantages of the gas table A of this embodiment will be described. The energization to the temperature control solenoid valve 133 is stopped for 20 seconds, the temperature control solenoid valve 133 is closed to set the M burner 13 to low heat, and the temperature control solenoid valve 13 is turned on for the next 3 seconds or 5 seconds.
3 is energized to open the temperature control solenoid valve 133 to open the M burner 1
3 during operation of the time control means 32 to burn with a weak thermal power than before boiling by repeating the fire and turned down the detected temperature Th, if the Th <T _H -5 ℃ is, Th ≧ T _H
Until the temperature becomes + w (however, w <0; for example, w = −2 ° C.), the temperature control means 34 burns the M burner 13 to a large flame, and
When the detected temperature Th rises and Th ≧ T _H + 10 ° C., the temperature control means 34 is maintained until Th <T _H + 8 ° C.
Is burning the M burner 13 with a small flame. Therefore, for example, after the position P4, the curry ingredient is added to the cooking container such as the pan 12 containing the cooking object 11 such as the curry ingredient,
Even lowered detected temperature Th as shown in position P5 of the solid line curves, earlier by fire burning, the detected temperature Th, the equilibrium temperature T _H + w (where w <0; example w = -2 ° C.) can be As a result, it is possible to efficiently perform simmering cooking in a manner in which the food 11 is added. Further, when the detected temperature Th rises after the position P4 as shown at the position P6 of the dashed-dotted curve due to partial boil-down of the food to be cooked or the like, the M burner 13 is forced to a low heat to lower the detected temperature Th. Therefore, it is possible to prevent the occurrence of problems such as burning or overcooking of the food to be cooked.

The present invention includes the following embodiments in addition to the above embodiments. a. In addition to curry, the food to be cooked may be stew, soup, miso soup, stewed rice cake, watered dish, or the like. b. The predetermined temperature x (5 ° C.), the predetermined temperature y (10 ° C.), and the predetermined temperature z (8 ° C.) may be appropriately determined. c. As the method of detecting the boiling state by the boiling detecting means, another method may be used, for example, when the rate of rise of the detected temperature Th per unit time becomes equal to or less than a predetermined value, the boiling state is determined. d. The method of detecting the equilibrium state by the equilibrium temperature detecting means may be another method, such as determining that the equilibrium state is when the temperature increase rate is equal to or lower than a predetermined value. e. When the detected temperature Th becomes a predetermined relationship with respect to the equilibrium temperature T _H, as another method of operating a heat source in the strong heating power or weak heating power than the heating power in boiling maintenance control means, a fire burning time Make the heating time longer (for example, 20 seconds small fire-10 seconds large fire) to increase the heating power.
Second small fire-1 second large fire) or longer small fire time (eg 20
A small heat for 5 seconds and a large heat for 5 seconds) may be used to give a weak heating power. f. The heating device is not limited to gas burners,
Electricity or oil may be used as fuel. g. When boiling is detected, the heating source is weaker than before boiling,
As another method of operating with a heating source that maintains a boiling state, for example, a gas amount control valve (proportional valve) is provided in the gas pipeline, and the opening degree of the valve is automatically adjusted to generate a weaker heating power than before boiling. You may set it.

[Brief description of drawings]

FIG. 1 is a perspective view of a gas table according to an embodiment of the present invention.

FIG. 2 is a structural diagram of the gas table.

FIG. 3 is a graph showing an example of elapsed time-detected temperature characteristics in the gas table.

FIG. 4 is a flowchart showing the operation of the control unit of the gas table.

[Explanation of symbols]

2 Temperature sensor 11 Cooking object 12 Pan (cooking container) 13 M burner (heating source) 31 Boiling detection means 32 Time control means (boiling maintenance control means) 33 Equilibrium temperature detection means 34 Temperature control means A Gas table (cooking device) Th detected temperature T _H equilibrium temperature w predetermined temperature x predetermined temperature y predetermined temperature z predetermined temperature

Claims (1)

[Claims] 1. A heating source for heating a cooking container containing an object to be cooked, a temperature sensor for detecting the temperature of the object to be cooked, and a rising speed of a detected temperature Th detected by the temperature sensor are reduced. At this time, boiling detection means for determining that the food to be cooked is in a boiling state, boiling maintenance control means for operating the heating source after boiling determination with a heating force that is weaker than before boiling and maintains a boiling state, and boiling after determination, equilibrium and since the detected temperature Th, i.e., any time the equilibrium temperature T _H, after actuation of the equilibrium temperature detecting means and the boiling maintenance control means for detecting, down detection temperature Th, the detected temperature Th <equilibrium temperature T _H - when a predetermined temperature x is the detected temperature Th ≧ equilibrium temperature T _H + predetermined temperature w (where w
<0) and until the heating source, is operated with a strong heating power than the heating power by the boiling maintenance control means, also up the detected temperature Th, the detected temperature Th ≧ equilibrium temperature T _H + predetermined temperature y in this case, the heat source until the detected temperature Th <equilibrium temperature T _H + predetermined temperature z (where y> z), and a temperature control means for actuating a weak heating power than the heating power by the boiling maintenance control means Cooking equipment provided.