JP2722428B2 - Cooking equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking apparatus for stewing 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 the boiling of an object in a cooking vessel, and when the user recognizes the boiling, the heating power is manually reduced to stew the object.

[0003]

However, in the conventional cooking apparatus, it takes a lot of time to monitor the boiling, and it is necessary to manually adjust the heating power. Adjustment is required and it takes time,
In addition, there is a drawback that the adjustment must be performed depending on the intuition of the user, and it is difficult to obtain a suitable heating power. Therefore, the inventors have found that the gas burner that heats the cooking container containing the object to be cooked, the temperature sensor that detects the temperature of the object to be cooked, and the rising speed of the detected temperature Th detected by the temperature sensor are reduced. Boiling detection means for judging that the food to be cooked is in a boiling state, and after the boiling state is determined, a heating power which is weaker than before the boiling state of the gas burner and which can maintain the boiling state is experimentally obtained, and a boiling maintenance control which operates with the heating power And a cooking apparatus having the above-mentioned means. However, when the cooking object is added after the boiling state determination , or depending on the type of the cooking object and the cooking container, the heating power becomes insufficient during the operation of the boiling maintenance control means, and the temperature of the cooking object becomes lower than the boiling state. It has been found that proper cooking cannot be performed because the temperature of the object to be cooked becomes too high because the temperature is too low or the heating power is too high and the temperature of the object to be cooked becomes too high. An object of the present invention, the cooking apparatus having a boiling maintenance control means for actuating the heating power for maintaining the weak and boiling than before boiling the heat source after determination boiling state, heat shortage or heating power excessive does not occur, It is an object of the present invention to constantly control the temperature of an object to be cooked so as to maintain a boiling state, thereby enabling efficient cooking.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a heating source for heating a cooking vessel containing a cooking object, a temperature sensor for detecting a temperature of the cooking object,
Boiling detection means for determining that the object to be cooked is in a boiling state when the rising speed of the detection temperature Th detected by the temperature sensor is small; and, after determining the boiling state , the heating source is weaker than before the boiling state; Boiling maintaining control means operated by a heating power for maintaining the boiling state ;
Boiling until the detected temperature Th to be equilibrated
The detected temperature Th during state determination and the equilibrium temperature T _H, the detection
When the temperature Th is in an equilibrium state, the detected temperature Th is set to the equilibrium temperature.
A balanced temperature detecting means for the T _H, after actuation 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) and the heat source until the operated at high heating power than the heating power by the boiling maintenance control means, also up the detected temperature Th, the detected temperature Th ≧ equilibrium temperature when the T H ₊ predetermined temperature y is the heat source until the detected temperature Th <equilibrium temperature T _{H +} predetermined temperature z (where y> z) by a weak heating power than the heating power by the boiling maintenance control means A configuration including a temperature control means for operating is adopted.

[0005]

The heating source heats the cooking container containing the object 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. Boiling maintenance control means actuates the heating power for maintaining the weak and boiling than before boiling the heat source after determining the boiling state.
The equilibrium temperature detection means samples
Until the detected temperature Th reaches the equilibrium state, when determining the boiling state
The detected temperature Th and the equilibrium temperature _{T H,} the detected temperature Th equilibrium
A state when the detected temperature Th and the equilibrium temperature T _H. The temperature control means detects the detected temperature T after the operation of the boiling maintenance control means.
h decreases, the detected temperature Th <the equilibrium temperature T _H −the predetermined temperature x
In this case, the heating source is operated with a heating power stronger than the heating power of the boiling maintaining control means until the detection temperature Th ≧ the equilibrium temperature T _H + the predetermined temperature w (where w ≧ 0), and the detection temperature Th and is increased, the detected temperature when the Th ≧ an equilibrium temperature T _{H +} predetermined temperature y is the detected temperature Th <equilibrium temperature T _{H +} predetermined temperature z (where y> z) to become the boiling maintain control means a heat source to Operate with a heating power weaker than the heating power of

[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 _{H +} is operated at a predetermined temperature w (where w ≧ 0) and becomes stronger heating power than the heating power by boiling maintain control means a heat source to also raised the detected temperature Th, the detected temperature Th ≧ equilibrium temperature T _H + When the predetermined temperature y is reached, the detected temperature Th <
The heating source is operated with a heating power weaker than the heating power of the boiling maintenance control means until the temperature becomes equal to the equilibrium temperature T _H + the predetermined temperature z (where y> z). For this reason, even if the food is added after the boiling state is determined , or even if the type of the food or the cooking container is changed, the food does not generate insufficient heating power or excessive heating power, and is always in a boiling state. Since the temperature is controlled to an appropriate temperature at which no scorching occurs while maintaining the temperature, efficient boiling can be performed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1 and FIG.
Is a left cooking stove 1 for heating a cooking container such as a pan 12 containing a cooking object 11 such as a curry dish, a temperature sensor 2 having a built-in thermistor disposed to press the bottom of the pan, Timer T for judging the amount of food, boiling detecting means 31 having timer Ta, and time control means for causing M burner 13 to alternately burn with small fire and large fire (boiling maintenance control means)
32, a control unit 3 having an equilibrium temperature detecting means 33 for detecting the equilibrium temperature T _H and a temperature control means 34 to which an electric output of the temperature sensor 2 is inputted. In addition, the gas table A includes a right cooking stove 4 having an H burner 41 having a gas consumption of 4100 kcal / h, and a 1950 kcal.
It also has a grill 5 with a grill burner 51 having a gas consumption of / 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 performing ignition.
4 and a thermocouple 15 which is burned by the combustion flame 10 to generate an electromotive force. In FIG. 2, 131 is a safety valve arranged in the gas line 132, and 133 is a main gas line 1 branched from the gas line 132.
The temperature control solenoid valve is disposed in the main gas pipe 134 of the sub gas pipe 135 and the sub gas pipe 135. The temperature control solenoid valve 133
Is in the closed state, the M burner 13 has a small fire, and in the open state, 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 starts counting 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
A timer Ta for measuring a required time ta required to increase the temperature by 1 ° C. every 1 ° C. The required time ta is determined by a determination 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 object to be cooked 11 such as curry is in a boiling state, and the detected temperature Th at the time of the boiling state determination is determined. Is transmitted to the time control means 32 as the boiling maintenance control means (see FIGS. 2 and 3).

The time control means 32 generates a boiling detection signal 310
Is input (when the boiling detecting means 31 determines the boiling state), the M burner 13 is changed to a heating power weaker than that before the boiling state . 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,
If the required time Δt is 24 seconds or more and it is determined that the amount of the object to be cooked 11 is large, the M burner 1 is burned.
3 is alternately burned with a small fire for 20 seconds and a large fire for 5 seconds.

The equilibrium temperature detecting means 33 outputs the boiling detection signal 31
0, and the detected temperature Th is 100 ° C or more and 200 ° C
If it is within the equilibrium measurement range of less than Tn, the latest value of the detected temperature Th sampled every 15 seconds is Tn, and the value Tn of the detected temperature Th sampled two times before that is Tn− ₂ , (Tn− Tn ₋₂ ) −2 ° C. ≦ (Tn−Tn)
_-2 ) If condition 1 is satisfied that ≦ 2 ° C. is satisfied continuously 7 times, Tn _′ is the seventh Tn satisfying condition 1, and Tn− ₂ is Ts- ₂ when condition 1 is satisfied first, (T _{H '-}
Ts) is -4 ° C. ≦ (T _{H 'with} the proviso 2 that satisfy -Ts) ≦ 4 ℃, when conditions 1 and 2 are both satisfied, T _H at that _time' value equilibrium temperature _{T H} of the And Note that condition 1,
Until both hold, the detected temperature T at the time of boiling state determination
We are dealing with a value of h as an equilibrium temperature T _H. Further, in the present embodiment, established conditions 1 and 2 are both once _'be a value equilibrium temperature T _H of the T _H' T H if it is detected is lower than the T _{H ',} the equilibrium temperature TH It has been updated to its lower _{TH '} .
Further, when the detected temperature Th goes out of the equilibrium measurement range, the previously calculated equilibrium temperature _TH is stored in memory, and when the detected temperature Th enters the equilibrium measurement range again, the value is used.

After the operation of the time control means 32, the temperature control means 34 lowers the detected temperature Th and sets the detected temperature Th to Th.
When < _TH- 5 ° C (= predetermined temperature x), Th ≧
By opening the solenoid valve 133 for temperature control until the T _H is fire burning the M burner 13, also up the detected temperature Th,
The detected temperature Th is _{Th ≧ T H + 10 ℃ (} = predetermined temperature y) and when made _{is, Th <T H + 8 ℃} (= predetermined temperature z) and comprising up to close the solenoid valve 133 for temperature adjustment M burner 13 Burn small fire.

Next, the operation of the control unit 3 having a microcomputer will be described with reference to FIGS. The user presses the stew key 61 on the operation panel 6,
The switch 17 is closed by pressing the point / fire extinguishing knob 16 and the safety valve 131 and a main valve (not shown) arranged downstream of the safety valve 131.
Is mechanically opened, the control unit 3 energizes the safety valve 131 and the temperature control solenoid valve 133 to maintain the valve open 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,
It is determined whether or not the detected temperature Th has reached 80 ° C. (the position P1 in FIG. 3). If Th = 80 ° C. (Yes), the process proceeds to step s2. In step s2, the timer T starts, and proceeds to step s3. In step s3,
It is determined whether or not 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 and the value of the variable t is stored as the required time Δt, and the determination value tk is obtained.
Is calculated as tk = (3 × Δt + 25) / 11, the timer Ta is started, and the process proceeds to step s5. Steps
In step 5, it is determined whether the detected temperature Th has risen by 1 ° C., and if it has risen by 1 ° C., the process proceeds to step s6, where 1 ° C.
It is determined whether the required time ta required for ascent is equal to or greater than the determination value tk. If it is less than the determination value tk (No), the process proceeds to step s7, and if it is greater than or equal to the determination value tk (Yes),
Proceed to step s8 (determine that the food is boiling). When it is determined that ta ≧ tk (position P3),
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 boiling state determination time of the detected temperature Th value equilibrium temperature T of the treated as _H, when 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 becomes 8
It is determined whether the time Δt required to raise the temperature from 0 ° C. to 90 ° C. is less than 24 seconds, and if Δt <24 seconds (Ye
s), proceed to step s9, and if Δt ≧ 24 seconds (N
o), and proceed to step s16. In step s9,
The power supply to the temperature control solenoid valve 133 is stopped for 20 seconds, the temperature control solenoid valve 133 is closed, and the M burner 13 is set to a small fire. For the next 3 seconds, the temperature control solenoid valve 133 is supplied with power to control the temperature. The electromagnetic 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 flow proceeds to step s11, Th ≧ _{T H} -
If it is 5 ° C. (No), the process proceeds to step s13. In step s11, power is supplied to the temperature control solenoid valve 133, the temperature control solenoid valve 133 is opened, the M burner 13 is set to a large fire, and the process proceeds to step s12. In step s12, the detected temperature Th is determined whether Th ≧ _{T H,} T
If a h ≧ _{T H} (Yes), the process returns to step s9,
If it is Th _{<T H} (No), the flow returns to step s11. In step s13, the detected temperature Th is Th ≧ T
It is determined whether or not a _H + 10 ° C., a Th ≧ _T H + 10 ℃ (position P6) If (Yes), the flow proceeds to step s14, if it is _{Th <T H + 10 ℃ (} No), the flow returns to step s9 . In step s14, the temperature control solenoid valve 1
The power supply to the motor 33 is stopped, the solenoid valve 133 for temperature control is closed, and the M burner 13 is set to low heat, and the process proceeds to step s15. In step s15, the detected temperature Th is Th _<T H + 8 ℃
Determining whether or not a Th _<T H + 8 ℃ (position P
7) If (Yes), the process returns to step s9, Th ≧ _{T H}
If it is +8 (No), the process returns to step s14. In step s16, the power supply to the temperature control solenoid valve 133 is stopped for 20 seconds, the temperature control solenoid valve 133 is closed, and the M burner 13 is set to a small fire. For the next 5 seconds, the temperature control solenoid valve 13 is turned off.
3 to open the temperature control solenoid valve 133 to open the M burner 1
3 is set to a large 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 of the temperature control solenoid valve 133 is stopped for 20 seconds, the temperature control solenoid valve 133 is closed, and the M burner 13 is set to a small fire. For the next 3 seconds or 5 seconds, the temperature control solenoid valve 13 is stopped.
3 to open the temperature control solenoid valve 133 to open the M burner 1
3 during the operation of the time control means 32 for burning with a smaller heating power than before the boiling state by repeating a large fire, the detected temperature Th
It turned down, when a Th _<T H -5 ℃ is, Th ≧
Until T _H, the temperature control means 34 causes the fire burning the M burner 13, also up the detected temperature Th, Th ≧ T
If the _H + 10 ° C. is, Th _<T H + 8 ℃ temperature control means 34 until is is small fire burning the M burner 13. For this reason, for example, after the position P4, the curry ingredients are added to the cooking container such as the pot 12 in which the food 11 such as the curry ingredients are placed, and the detected temperature Th is shown as the position P5 of the solid curve. Even if it goes down, early on due to the large fire,
The detected temperature Th, it is possible to return to the equilibrium temperature T _H that maintains boiling state, can be efficiently stew cooking manner to add the food 11. Further, when the detected temperature Th rises after the position P4 as shown by the position P6 of the one-dot chain line curve due to partial clogging of the object to be cooked, the M burner 13 is forcibly set to a small flame and the detected temperature Th is increased.
, The occurrence of problems such as scorching or over-cooking of the food can be prevented.

The present invention includes the following embodiments in addition to the above embodiment. a. The food to be cooked may be stew, soup, miso soup, stewed udon, watered dish, or the like, in addition to curry. b. The predetermined temperature w (0 ° C.), 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 detection means may be another method, such as determining that the temperature rise rate becomes equal to or less than a predetermined value as the equilibrium state. 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 Long (for example, 20 seconds small fire-10 seconds large fire) to obtain a strong heating power
Second small fire-second large fire) or long small fire time (for example, 20
(Small fire-5 seconds big fire) may be used as a weak heating power. f. The heating device is not limited to gas burners,
Electricity or oil may be used as fuel. g. When detecting a boil, as another method of operating a heating source to maintain a weak and boiling than before boiling the heat source, e.g., gas amount control valve in the gas line in the (proportional valve) provided, The opening degree of the valve may be automatically adjusted to set a lower heating power than before the boiling state .

[Brief description of the drawings]

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

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

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

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

[Description of Signs] 2 Temperature sensor 11 Cooking object 12 Pot (cooking vessel) 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 apparatus) Th detected temperature T _H equilibrium temperature w predetermined temperature x predetermined temperature y predetermined temperature z predetermined temperature

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tadao Yamashita 2-26, Fukuzumi-cho, Nakagawa-ku, Nagoya-shi Inside Linhai Corporation (56) References JP-A-3-236518 (JP, A) 58532 (JP, B2)

Claims (1)

(57) [Claims] 1. A heating source for heating a cooking container in which a cooking object is contained, a temperature sensor for detecting a temperature of the cooking object, and a rising speed of a detection temperature Th detected by the temperature sensor is reduced. when the a determining boiling detection means and the food is in a boiling state, and the boiling maintenance control means for actuating the heating power for maintaining the weak and boiling than before boiling the heat source after determination boiling state, the boiling After the state determination , the detected temperature Th sampled is
Until the equilibrium state is reached, the detected temperature Th at the time of the boiling state judgment is kept flat.
And 衡温T _H, and its the detected temperature Th is in equilibrium
A balanced temperature detecting means for detecting temperature Th and the equilibrium temperature T _H of, 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) and becomes to actuate the heating source with a strong heating power than the heating power by the boiling maintenance control means, also up the detected temperature Th, if the detected temperature Th ≧ equilibrium temperature T _{H +} predetermined temperature y the detected temperature Th comprises the temperature control means for actuating the heat source until the <equilibrium temperature T _{H +} predetermined temperature z (where y> z) by a weak heating power than the heating power by the boiling maintenance control means Cooking equipment.