JP2801037B2 - Steam cooker - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam cooker having a steaming function used in general households and the like.

2. Description of the Related Art A conventional steam cooker of this type has a configuration as shown in FIG. In FIG. 6, a pot 1 for storing steaming water and steaming material, a heating means 2 for heating the pot 1, a steam detecting means 3 for detecting that the steaming water in the pot 1 has turned into steam, The steaming time setting means 4 for setting the steaming time after the steam starts to be emitted, and the duty ratio of the heating means 2 are controlled. When the steam detection means 3 receives the signal indicating that the steam has been emitted, the steaming is started. The control means 5 controls the heating means 2 for the time set by the time setting means 4 to perform the steaming process.

Problems to be Solved by the Invention However, in such a conventional steaming cooker, in the case of cooking that requires watering in the middle of steaming or the like,
The person who cooks monitors that the steam has started to come out, and after the steam starts to come out, it is necessary to spray water at regular intervals, and time management, water amount management, etc., are inconvenient.
There was a problem that cooking failed due to wrong time and amount of sprinkling water.

The present invention solves such a problem, and by using the steam pressure of the steam in the pot to automatically blow up the water and sprinkle water, steam cooking can be performed easily without fail. It is intended to provide a vessel.

Means for Solving the Problems In order to solve the above problems, the steaming cooker of the present invention is provided at the bottom of the pan in conformity with the bottom shape of the pan, and has a leg portion for securing a space for water between the pan and the bottom. A substantially circular disk having a hole, a cylinder surrounding the hole and provided in a vertical direction opposite to the legs, a heating means for heating the pan, and water in the pan boiling. Boiling detecting means for detecting the occurrence of boiling, a boiling maintaining means for reducing the heating capacity of the heating means to maintain the boiling after detecting the boiling by the signal of the boiling detecting means, and counting by the signal of the boiling detecting means. And an energizing means for continuously energizing the heating means for a predetermined time so that water can be blown up through the cylinder each time a predetermined time is reached by the counting means.

Operation With the above configuration, when the water in the pot boils and steam starts to come out, the heating capacity is reduced to maintain boiling, and after a predetermined time, the heating capacity is maximized to increase the steam pressure, and the steam pressure is used. The water is blown up through the cylinder to sprinkle water, and this is automatically repeated a plurality of times at predetermined time intervals, so that steam cooking can be performed without failure.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of a steam cooker according to one embodiment of the present invention, and FIG. 2 is a perspective view of a steam plate of the steam cooker. In FIG. 1 and FIG. 2, reference numeral 6 denotes a substantially circular plate having a steam hole 8 provided at the bottom of the pot in conformity with the shape of the bottom of the pot 7 and surrounding the steam hole 8 in a vertical direction. A tube 9 is provided. Cooking material to be steamed (sticky rice in this example) 10
Is placed on the disk 6, and the water 11 is stored in the pot 7. Further, a heater 12 for heating the pan 7 is provided on the lower surface of the bottom of the pan 7, and when the water in the pan 7 is boiled, the temperature rises due to steam when the water in the pan 7 is boiled. A thermistor for detecting the boiling is provided.

FIG. 3 shows a block diagram of a steam cooker according to one embodiment of the present invention. In FIG. 3, reference numeral 14 denotes the pan 7 including the thermistor 13;
Boiling detecting means 15 for detecting that the water in the water has boiled, 15 is a boiling maintaining means for reducing the heating capacity of the heater 12 after detecting that the water has boiled by the signal of the boiling detecting means 14 and maintaining the boiling, 16 A counting means 17 for starting counting by a signal of the boiling detecting means 14 is an energizing means for continuously energizing the heater 12 for a predetermined time every time the counting means 16 reaches a predetermined time.

FIG. 4 is a circuit diagram of a steam cooker according to one embodiment of the present invention, which comprises a microcomputer 18 and its peripheral circuits. The microcomputer 18 shown here is a CPU, RO
It is a so-called one-chip microcomputer composed of M, RAM and input / output ports. Thermistor 13 is A / D
The temperature signal from the thermistor 13 is converted into a binary code and read by the microcomputer 18 through a converter 19 via an input port of the microcomputer 18. Reference numeral 20 denotes a start switch, which is connected to the microcomputer 18 and the microcomputer 18 determines whether or not the switch has been pressed. Reference numeral 21 denotes an AC power supply. The AC power supply 21 has a heater 12 for heating the pan 7 and a relay contact 22.
And a relay circuit 22 is configured to open and close the relay contact 22 by flowing a current to the relay coil 24 via the transistor 23 by a signal from the output port of the microcomputer 18. Reference numeral 25 denotes a DC power supply for operating the above-described circuit.

Next, the operation of the steam cooker configured as described above will be described. FIG. 5 shows a flowchart of the program stored in the ROM in the microcomputer 18, and the operation will be described according to the procedure of the program shown in the flowchart.

First, in step 31, it is determined whether or not the start switch 20 has been pressed, and listening is continued until the start switch 20 is pressed. switch
When 20 is pressed, the routine proceeds to step 32, where the heater 12 is continuously energized. Next, in step 33, it is determined whether or not the water 11 in the pan 7 has boiled based on whether or not the temperature of the thermistor 13 has risen. If not, the process returns to step 32. If it is determined in step 33 that the water is boiling, the flow advances to step 34 to start counting the time T. In step 35, the power supply to the heater 12 is turned on for 5 seconds and turned off for 11 seconds, and the flow advances to step 36. In step 36, it is determined whether or not the time T is 5 minutes, and if it exceeds 5 minutes, the flow proceeds to step 37. In step 37, it is determined whether or not the time T is 10 minutes. To determine if the time T is 15 minutes, and if it exceeds 15 minutes, step
Proceeding to 39, it is determined in step 39 whether or not the time T is 30 minutes or longer. Step 3
If it is determined that the time T is 5 minutes, 10 minutes, and 15 minutes respectively in steps 6, 37, and 38, in step 40, the heater 12 is continuously energized for 1 minute, and the process proceeds to step 39. If it is determined in step 39 that the time T is 30 minutes or more, the process proceeds to step 41, in which the power supply to the heater 12 is stopped, and the process returns to step 31.

In this way, when the water in the pot boils and the steam starts to come out,
Instead of lowering the heating capacity to maintain boiling and watering after a predetermined time, instead of maximizing the heating capacity of the heater and increasing the steam pressure, the steam pressure is used to blow up water through the cylinder, Is automatically repeated several times at predetermined time intervals.

Effect of the Invention As described above, according to the present invention, when the water in the pot boils and the steam starts to be emitted, the heating capacity is reduced to maintain the boiling, and instead of watering after a predetermined time, heating of the heater is performed. The steam pressure is increased by maximizing the capacity, and water is blown up through the cylinder using the steam pressure, and this is automatically repeated a plurality of times at predetermined intervals. Therefore, it is possible to obtain a steam cooker that is easy to use and that can steam well without failing in steam cooking.

[Brief description of the drawings]

FIG. 1 is a sectional view of a steam cooker according to an embodiment of the present invention.
Fig. 3 is a perspective view of a steaming plate of the steaming cooker, Fig. 3 is a block diagram of the steaming cooker, Fig. 4 is a circuit diagram of the steaming cooker, and Fig. 5 is an example of a program of the steaming cooker. FIG. 6 is a block diagram showing a conventional steam cooker. 6 ... Disc, 7 ... Pot, 8 ... Steam vent, 9 ... Cylinder, 12 ...
... heater, 13 ... thermistor, 14 ... boiling detection means, 15
... Boiling maintaining means, 16 ... Counting means, 17 ... Electricity means.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-57514 (JP, A) JP-A-1-141613 (JP, A) Japanese Utility Model Application No. 52-139070 (JP, U) Japanese Utility Model Application Utility Model No. 55- 8434 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47J 27/00-27/64

Claims (1)

(57) [Claims] Claims: 1. A pan is provided at the bottom of a pan in conformity with the bottom shape of the pan,
A substantially circular disk having a leg and a hole for securing a space for water to enter between the bottom of the pot, a cylinder provided around the hole in the disk and provided in a vertical direction opposite to the leg, Heating means for heating, boiling detection means for detecting that the water in the pot has boiled, and maintaining the boiling by lowering the heating capacity of the heating means after detecting the boiling by the signal of the boiling detection means. Boiling maintaining means, counting means for starting counting based on a signal from the boiling detecting means, and the heating means continuously for a certain time so that water can be blown up through the cylinder each time a predetermined time is reached by the counting means. A steam cooker provided with an energizing means for energizing.