JP2749373B2 - Steam cooker - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam cooker capable of steaming dishes requiring watering during steaming cooking.

2. Description of the Related Art An example of a conventional steam cooker is shown in a block diagram of FIG.

In FIG. 4, a pot 30 for putting steaming water and steaming materials, etc.
And heating means 31 for heating the pot 30, steam detecting means 32 for detecting that the steam in the pot 30 has turned into steam, and steaming time setting means for setting the steaming time from when steam starts to be emitted. 33, a control for controlling the duty ratio of the heating means 31, receiving a signal indicating that the steam has started to be emitted by the steam detecting means 32, and performing the steaming step for a time set by the steaming time setting means 33 after the steam has been emitted. It is constituted by means 34.

Problems to be Solved by the Invention However, in the above-described configuration, in the case of cooking that requires watering in steam cooking, the user monitors that steam has started to be emitted, and after the steam has started to be emitted, a certain period of time has elapsed. Each time, it was necessary to perform a certain amount of water spraying, and the user himself had to manage time and water amount. For this reason,
There was a problem that cooking was unsatisfactory and cooking failed due to wrong time and amount of sprinkling water.

An object of the present invention is to address the above problems, and to provide a steam cooker that is easy to use and can cook well by automatically performing a fixed amount of water spraying a plurality of times at regular intervals after steam starts to be emitted. What you want to do.

Means for Solving the Problems In order to achieve the above object, the present invention provides a pot containing steaming water and a steaming material, a heating means for heating the pot, and that the steaming water in the pot becomes steam. Steam detecting means for detecting, steaming time setting means for setting a steaming time from when steam starts to be emitted, a watering container A for storing all the water used for watering, and a watering container for storing an amount of water used for one watering. B, a first valve that opens and closes between the watering container A and the watering container B, a second valve that opens and closes between the watering container B and the pot, and controls the duty ratio of the heating means. After receiving the signal from the steam detection means and starting to emit steam, the opening and closing of the first valve and the second valve are controlled to discharge a certain amount of water into the water spraying container B at regular intervals. Perform multiple times, at the time set by the steaming time setting means A steam cooker provided with control means for performing a steaming step in response.

Function In the present invention, the control means controls the opening and closing of the first valve provided between the watering container A and the watering container B and the second valve provided between the watering container B and the pot as described above. Thus, a certain amount of water can be automatically sprayed a plurality of times at regular intervals after the steam starts to be emitted in response to the signal from the steam detection means.

Embodiment An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a pot into which steaming water and steaming materials are put. Numeral 2 heats the pot 1 with a heating means. 3 is a steam detecting means for detecting that the steam in the pot 1 has turned into steam,
Reference numeral 4 denotes a steaming time setting means for setting a steaming time after steam starts to be emitted. Reference numeral 5 denotes a watering container A, which holds all the water used for watering. Numeral 6 denotes a watering container B for storing the amount of water used for one time of watering. Reference numeral 7 denotes a first valve which opens and closes between the watering container A5 and the watering container B6. Reference numeral 8 denotes a second valve that opens and closes between the watering container B6 and the pot 1. Reference numeral 9 denotes a control unit which controls the duty ratio of the heating unit 2 and controls the opening and closing of the first valve 7 and the second valve 8 after receiving a signal from the steam detection unit 3 and starting to emit steam. Every time, a certain amount of water is injected into the watering container B6 a plurality of times, and the steaming step is performed according to the time set by the steaming time setting means 4.

Next, a circuit diagram of one embodiment of the present invention is shown in FIG. 1 is a pot, 5 is a tapping capacity A, 6 is a tapping vessel B, 7 is a first valve, 8 is a second valve, which is the same as FIG. Ten
Used a heater for heating the pan 1 by a heating means. In addition, you may use a dielectric heating coil etc. other than a heater.

11 is a thermistor, the steam in the pot 1 becomes steam,
It detects that the temperature of the lid 12 of the pan 1 has reached 80 ° C. or higher.
The voltage divided by the thermistor 11 and the resistor 13 is input to the A / D converter 14. The output of the A / D converter 14 is input to the microcomputer 15, and the temperature of the lid 12 is input to the microcomputer 15 as to what degree the temperature is. Resistors 16 and 17 are
The reference voltage is set in the A / D converter 14. Reference numeral 18 denotes a steaming time setting switch for setting a steaming time after steam starts to be emitted. The switch 18 is connected to an input of the microcomputer 15 and sets the steaming time by turning on and off the switch 18. 19 is a resistor, a steaming time setting switch
18 fixes the input voltage when OFF to low level. 20 is a transistor, 21 is a resistor, and a microcomputer 15
When the output point is high impedance, the transistor 20 is turned on, and the first valve 7 operates and opens. Conversely, when the output point A is at the low level, the transistor 20 is turned off, and the first valve 7 does not operate and remains closed. Reference numeral 22 denotes a transistor and reference numeral 23 denotes a resistor which is connected to the output point of the microcomputer 15. When the output point has a high impedance, the transistor 22 is turned on, and the second valve 8 operates to open. Conversely, when the output low point is low level,
The transistor 22 is turned off, and the second valve 8 does not operate and remains closed. Reference numeral 24 denotes a relay coil, and reference numeral 25 denotes a relay contact. Energization of the heating means 10 is determined by ON and OFF of the relay contact 25. 26 is a transistor and 27 is a resistor, which is connected to the output point C of the microcomputer 15. When the output C point is at high impedance, the transistor 26 is turned on to excite the relay coil 24, close the relay contact 25, and
Energize 10 Conversely, when the output C point is at a low level, the transistor 26 turns off, the relay contact 25 opens, and the heating means 10
Is not energized. 28 is a commercial AC power supply and 29 is a DC power supply.

The operation of the circuit diagram of the embodiment of the present invention will be described with reference to the flowchart shown in FIG.

In step a, the steaming time T1 is set by turning on and off the steaming time setting switch 18.

In step b, the microcomputer 15 sets the output C point to high impedance, closes the relay contact 25, and energizes the heating means 10 to heat the pan 1.

In step c, it is determined whether or not steam has started to be emitted by determining whether or not the temperature detected by the thermistor 11 has reached 80 ° C. or higher. That is, the microcomputer 15 receives the output of the A / D converter 14 and determines that no steam is emitted when the temperature of the thermistor 11 is lower than 80 ° C., and returns to step b. Conversely, if the temperature is equal to or higher than 80 ° C., it is determined that steam is emitted, and the process proceeds to step d.

In step d, the microcomputer 15 starts counting the steaming time T1 set in step a.

Next, the process proceeds to step e, where the microcomputer 15 sets the output C point to high impedance for 5 seconds out of 16 seconds, to a low level for 11 seconds, and energizes the heating means 10 at a duty ratio of 5/16.

Next, the process proceeds to step f, in which the number n of times of watering is initialized to zero.

Next, proceeding to step g, the microcomputer 15 sets the output point A to high impedance, operates the first valve 7, and opens it. Thereby, the sprinkling water in the sprinkling container A5 fills the sprinkling container B6 in which the amount of the single sprinkling enters.

Next, proceeding to step h, the microcomputer 15 sets the output point A to low level, and closes the first valve 7. As a result, the water spray of the water spray container A5 does not enter the water spray container B6.

Next, proceeding to step i, the microcomputer 15 sets the output point B to high impedance, operates the second valve 8, and opens it.

Thereby, the water in the watering container B6 is sprinkled on the steamed material in the pot 1.

Next, proceeding to step j, the microcomputer 15 sets the output point B to the low level and closes the second valve 8.

Next, the process proceeds to step k, where the microcomputer 15 starts counting the interval time T2 at which water is sprayed.

Next, proceeding to step 1, the microcomputer 15 counts the number of times of water spraying plus one.

Next, proceeding to step m, the microcomputer 15 determines whether the number of times of watering has been a predetermined number of times, for example, five times. If the predetermined number of times of watering has been completed, the process proceeds to step n. Here, it is determined whether or not the steaming time T1 set in step a has elapsed. If the time T1 has not elapsed, the process proceeds to step o, and the heating unit 10 is energized at a duty ratio of 5/16 as in step e, and returns to step n. If the steaming time has exceeded T1 in step n, the process proceeds to step p and ends the cooking. When the number of times of watering does not reach the predetermined number in step m, the process proceeds to the next step q. Here, it is determined whether or not the time when the counting was started in step k has elapsed, for example, the interval time T2 at which water is sprayed, for example, 5 minutes. If 5 minutes have not elapsed since the previous water spraying, the process proceeds to step r, and similarly to step e. The heating means 10 is energized at a duty ratio of 5/16, and the process returns to step q.

In step q, when 5 minutes have elapsed from the previous watering, the process proceeds to step s, the interval time T2 for performing watering is set to 0, the process returns to step g, and the watering operation is repeated.

Effect of the Invention As described above, the present invention is provided with the control means for controlling the opening and closing of the first valve and the second valve. Can be performed multiple times. Therefore, as in the past, the user monitors that the steam has begun to be emitted, and after the steam has begun to be emitted, the user himself does not have to perform constant water spraying at regular intervals and the usability is improved. It is possible to prevent the user from forgetting the watering and failing to cook steamed dishes.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a circuit diagram showing the embodiment, FIG. 3 is a flowchart showing the embodiment, and FIG. 4 is a block diagram showing a conventional example. is there. DESCRIPTION OF SYMBOLS 1 ... Pot 2,2 ... Heating means 3 ... Steam detecting means 4, ... Steaming time setting means 5 ... Spring water container A, 6 ... Spring water container B 7 ... First valve, 8 ... Second valve 9 ... Control means

Continuation of the front page (56) References JP-A-61-141332 (JP, A) JP-A-2-185210 (JP, A) JP-A 55-8434 (JP, U) JP-A 50-121084 (JP , U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) A47J 27/00-27/64

Claims (1)

(57) [Claims] 1. A pot into which steaming water and a steaming material are put, heating means for heating the pot, steam detecting means for detecting that steaming water in the pot has turned into steam, Steaming time setting means for setting a steaming time from water, a watering container A for storing all water used for watering,
A watering container B in which an amount of water to be used for one watering is put; a first valve that opens and closes between the watering container A and the watering container B; and a second valve that opens and closes between the watering container B and the pot. After controlling the duty ratio of the heating means and receiving a signal from the steam detection means to start emitting steam, the first valve and the second
Control means for controlling the opening and closing of the valve to perform a certain amount of water spraying into the water spraying container B plural times at regular time intervals, and performing a steaming step according to the time set by the steaming time setting means. A steam cooker characterized by the following.