JP2000316712A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker capable of cooking delicious cooked rice by preventing generation of water drops in an inner pot. SOLUTION: In a rice cooker for cooking rice by controlling heating of an inner kettle 5 with gas by a controlling part 4, an electrically driven valve 7 the opening degree of which is adjusted by the control of a control part 4 is provided at an inner lid 6 for closing the kettle 5, a steam discharging fan 8 the number of the revolution of which is adjusted by the control of the part 4 is provided at an outer lid 2 positioned on the outside of the lid 6. At the time of finishing cooking of rice, the controlling part 4 opens the valve 7 and rotates the fan 8. A prescribed time later, the part 4 closes the valve 7 and stops the fan 8 several seconds after closing the valve 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker for cooking rice by controlling the direct or indirect heating of an inner pot with gas or electricity by a control unit.

[0002]

2. Description of the Related Art A conventional rice cooker has a structure in which holes are formed in an inner lid and an outer lid, and high-temperature steam generated in an inner pot when rice is cooked from the holes is released by the pressure of the high-temperature steam. Has become.

[0003]

However, if the size of the holes provided in the inner lid and the outer lid is set to a size that allows the high-temperature steam generated in the inner kettle to be released as it is, the inside of the inner kettle is maintained at a predetermined temperature and a predetermined temperature. The rice cannot be cooked deliciously because it cannot be maintained at the predetermined pressure. Therefore, if the size of the holes provided in the inner lid and the outer lid is set so that the inside of the inner pot can be maintained at a predetermined temperature and a predetermined pressure, that is, if the size of the holes is reduced, high-temperature steam cannot be released, and Water drops are generated in the kettle. When water droplets are generated in the inner pot, stickiness is caused and the taste of the rice is impaired.

[0004] It is considered that water droplets are generated in the inner pot because the high-temperature steam adheres to the inner pot and cools, or water drops adhere to the inner pot due to a temperature difference between the inner pot and the outside air. Can be

The present invention has been made in order to solve the above-mentioned disadvantages, and provides a rice cooker capable of cooking delicious rice by preventing water droplets from being generated in an inner pot. It is.

[0006]

SUMMARY OF THE INVENTION The present invention provides a rice cooker for cooking rice by controlling heating of an inner pot by gas or electricity by a control unit. Is provided with a motor-operated valve whose opening is adjusted by the above control. The controller opens the electric valve when the rice is cooked, and closes the electric valve after a predetermined time. And it is desirable to provide a steam discharge fan whose rotation speed is adjusted by the control of the control unit on the outer lid located outside the inner lid. When the steam discharge fan is provided as described above, it is preferable that the control unit opens the electric valve and rotates the steam discharge fan, and stops the steam discharge fan several seconds after the electric valve is closed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a schematic configuration of a gas rice cooker as one embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes an outer case, and 2 denotes an outer cover. The outer cover 2 covers and opens an open upper surface of the outer case 1. Reference numeral 3 denotes a gas burner disposed at the bottom in the outer case 1 and 4 denotes a control unit disposed outside the outer case 1. The control unit 4 includes, for example, a microcomputer, an input operation unit, and a display unit. It controls the combustion of gas from the gas burner 3 and the electric valve 7 and the steam discharge fan 8 described later. And
Although not shown, a heat sensor is attached to a central portion of the gas burner 3.

5 is an inner pot which can be inserted into and removed from the outer case 1;
Reference numeral 6 denotes an inner lid for closing the open upper surface of the inner pot 5, and the inner lid 6 is detachably attached to the outer lid 2, for example.
Reference numeral 7 denotes a motor-operated valve provided on the inner lid 6, the opening and closing state of which is controlled by the controller 4 so that the steam in the inner pot 6 can be discharged to the outside of the inner pot 6. Reference numeral 8 denotes a steam discharge fan disposed on the outer lid 2 for forcibly discharging the steam in the outer case 1 closed by the outer lid 2 to the outside of the outer case 1. In addition, F shows the flame which the gas burned.

Next, cooking rice will be described. First, the rice is sharpened and put into the inner pot 5, water corresponding to the amount of rice is poured, and the outer case 1 is closed with the outer lid 2. For example, a time to start cooking rice or a time to cook rice is set. Then, when it is time to start cooking rice, the control unit 4 supplies gas to the gas burner 3, ignites the gas, and burns the gas. When the gas emits the flame F and burns in this way, the heat generated by the burning of the gas is supplied to the inner pot 6 and the rice starts to be cooked.

Then, the rice is cooked and the water evaporates, and the inner pot 5
When the temperature becomes, for example, 120 ° C. to 150 ° C., the heat sensor detects the temperature and outputs the temperature to the control unit 4, so that the control unit 4 determines that the rice cooking is completed and supplies the gas to the gas burner 3. Is stopped, the electric valve 7 is opened, and the steam discharge fan 8 is rotated. When the motor-operated valve 7 is opened and the steam discharge fan 8 is rotated in this manner, the high-temperature steam in the inner pot 5 passes through the motor-operated valve 7 and escapes into the outer case 1. It is forcibly discharged out of Case 1.

Then, a predetermined time for opening the motor-operated valve 7 is determined based on the amount of rice to be cooked, that is, the time for burning the gas, and the motor-operated valve 7 is closed after opening the motor-operated valve 7 for the predetermined time. After a few seconds, the steam discharge fan 8 is stopped. When the electric valve 7 is opened and the steam discharge fan 8 is rotated as described above, excess water after cooking rice, that is, high-temperature steam is discharged out of the outer case 1. Water drops are not generated, and delicious rice can be cooked.

Since the electric valve 7 is closed when cooking rice and opened only when discharging high-temperature steam, the opening of the electric valve 7 can be set to a size capable of efficiently discharging high-temperature steam. .

In the above embodiment, a gas cooker has been described as an example, but an electric rice cooker can be obtained by changing a heat source to a heater. In addition, the steam discharge fan 8
However, when the steam discharge fan 8 is not provided,
By increasing the predetermined time for opening the motor-operated valve 7 and increasing the opening, the high-temperature steam in the inner pot 5 can be efficiently discharged, so that the intended purpose can be achieved.

[0015]

As described above, according to the present invention, high-temperature steam which causes stickiness is discharged from the inner pot by a simple and inexpensive structure in which an electric valve and a steam discharge fan are added. You can cook delicious rice.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a schematic configuration of a gas rice cooker as one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer case 2 Outer lid 3 Gas burner 4 Control part 5 Inner pot 6 Inner lid 7 Motorized valve 8 Steam discharge fan F Flame

Claims (5)

[Claims] 1. A rice cooker for cooking rice by controlling heating of an inner pot by gas or electricity by a control unit, wherein an opening degree is controlled by an inner lid for closing the inner pot, by control of the control unit. A rice cooker comprising a motorized valve that is adjusted. 2. The rice cooker according to claim 1, wherein the control unit opens the electric valve when the rice is cooked, and closes the electric valve after a predetermined time. Rice cooker. 3. The rice cooker according to claim 1, wherein a steam discharge fan whose rotation speed is adjusted by control of the control unit is provided on an outer cover located outside the inner cover. Rice cooker. 4. The rice cooker according to claim 3, wherein the control unit opens the electric valve and rotates the steam discharge fan. 5. The rice cooker according to claim 4, wherein the control unit stops the steam discharge fan several seconds after the electric valve is closed.