JPH1085132A - Rice washing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice washing method with which rice can throughly be washed with a small amount of water and cracking of rice in polishing is prevented. SOLUTION: This method is provided with water supply valve 10 for turning on/off the supply of water to rice washing tank 6 and a water drain valve 11 for turning on/off the drain of water into the rice washing tank, and a rice washing process and a rice polishing process are repeated while controlling the timing to turn on/off the water supply valve 10 and the water drain valve 11. Concerning such a rice washing method, the supply of water is started in the rice washing process by opening the water supply valve 10 in the state of closing the water drain valve 11 and when the inside of the rice washing tank 6 is filled with the prescribed quantity of water, the water drain valve 11 is opened. After the state of opening both the valves is maintained for prescribed time, this process is finished. In the rice polishing process, the water supply valve 10 is opened and when the prescribed quantity of water is drained out of the rice washing tank 6, the water drain valve 11 is closed. After the state of closing both the valves for prescribed time is maintained, this process is finished.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for washing rice.

[0002]

2. Description of the Related Art As this kind of rice washing method, for example, a method described in Japanese Patent Application Laid-Open No. 4-158818 is known. This known document discloses a rice storage section for storing rice, a measuring section for discharging a predetermined amount of rice in the rice storing section, a rice washing section for washing rice discharged from the measuring section, and discharging rice in the rice washing section. There is disclosed an automatic rice cooker provided with a rice discharging unit for cooking rice and a rice cooking unit for cooking rice discharged from the rice discharging unit. And in the rice washing section,
A rice washing tank for storing rice and water, a stirring device for stirring rice and water in the tank, a water supply valve for turning on and off water supply to the rice washing tank, and turning on and off draining of water in the rice washing tank. It has a drain valve. Then, there is disclosed a rice washing method in which ON / OFF timing of the water supply valve and the drain valve is controlled so that the rice washing step and the rice polishing step are repeated.

[0003] According to a time chart shown in FIG. 4, on / off control of a motor of a stirring device, a water supply valve, and a drain valve is performed. That is, in the rice washing process, the water supply valve was opened and the drain valve was opened, and the motor of the stirring device was driven to stir the rice and water for a predetermined time to wash the rice. In the rice polishing step, the water supply valve was closed and the drain valve was opened. As a state, the rice was driven for a predetermined period of time for polishing.

[0004]

In the conventional rice washing method, since the drain valve is opened during the rice washing process, a large amount of water flows, and there is a problem that water is wasted. In addition, in the polishing rice process, water is almost removed, and stirring is performed in a state where water droplets adhere to the rice surface.

Accordingly, an object of the present invention is to provide a method of washing rice that can be washed neatly with a small amount of water supply and that prevents cracking of rice during polishing.

[0006]

According to the present invention, the following means are provided to achieve the above object. That is, the features of the present invention include a water supply valve that turns on and off water supply to the rice washing tank, and a drain valve that turns on and off water drainage in the rice washing tank. In the rice washing method, by controlling the timing of the on, off, to repeat the rice washing step and the polishing rice step, the rice washing step starts water supply by opening the water supply valve with the drain valve closed, When a predetermined amount of water is filled in the rice washing tank, the drain valve is opened, and both valves are kept open for a predetermined time, and the rice polishing step is closed, and the water supply valve is closed. When a certain amount of water is discharged, the drain valve is closed, and both valves are kept closed for a predetermined period of time.

According to the present invention, in the rice washing process, the drain valve is closed until a predetermined amount of water is accumulated in the rice washing tank, and then the drain valve is opened. It requires less water than washing rice in an open state. In the rice polishing process, the drain valve is closed with a predetermined amount of water remaining in the rice washing tank. The risk of occurrence is reduced.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows a gas automatic rice cooker for business use. This rice cooker has a rice storage unit 1 for storing rice.
A measuring unit 2 for discharging a predetermined amount of rice from the rice storage unit 1; a rice washing unit 3 for washing rice discharged from the measuring unit 2;
A rice discharging unit 4 for discharging the rice, a rice cooking unit 5 for cooking the rice discharged from the rice discharging unit 4, and a control unit (not shown) for controlling the operation of each unit.

The rice washing section 3 includes a rice washing tank 6 for storing rice and water, a water supply device 7 for supplying water into the tank 6, a drainage device 8 for draining water from the tank 6,
And a stirring device 9 for stirring rice therein. The water supply device 7 is provided with a water supply valve 10 for turning on / off water supply. The drainage device 8 includes a drainage valve 1 for turning on / off drainage.
1 is provided. The stirrer 9 includes a rotatable stirrer 12 and a motor 13 for rotating the stirrer 12.

Referring to FIG. 1, a method for washing rice using the automatic rice cooker will be described. First, in the first rice washing process,
With a predetermined amount of rice being supplied to the rice washing tank 6, the motor 13 of the stirring device 9 is turned on to rotate the stirring means 12 to open the water supply valve 10 and close the drain valve 11 for a predetermined time.
Then, when a predetermined amount of water is accumulated in the rice washing tank 6, the drain valve 11 is opened, and this state is maintained for a predetermined time, and the first rice washing step is completed.

In the subsequent first rice polishing step, the water supply valve 10 is closed while the drain valve 11 is kept open. Then, a predetermined amount of water in the rice washing tank 6 is discharged, and when the remaining amount of water reaches the predetermined amount, the drain valve 11 is closed to prevent further drainage. Then, rice polishing is performed for a predetermined time. Next, the process proceeds to the second rice washing step, in which the drain valve 11 is kept closed and the water supply valve 10 is opened. Then, when the amount of water in the rice washing tank 6 reaches a predetermined amount, the drain valve 11 is opened, and the state is maintained for a predetermined time to wash rice.

Next, a second polishing step is performed, in which the same operation as in the first polishing step is performed. Then, the process proceeds to a third rice washing step, which is the same as the second rice washing step. Then, when the third rice washing step is completed, the overflowing step is started. In this step, the rice is washed while the water overflows from the tank 6 while the drain valve 11 is closed and the water supply valve 10 is kept open. After a lapse of a predetermined time, the motor 13 of the stirring device 9 is stopped, the drain valve 11 is opened, and the water supply valve 10 is closed, so that the overflow process is completed and all the water in the tank 6 is discharged.

The above is the rice washing method according to the present invention,
By adopting such a method, compared to the conventional method in which the drain valve 11 is left open, it is possible to cleanly wash with a smaller amount of water supply. In addition, since rice is polished by collecting water during polishing, cracking of the rice is prevented. The rice cooker 5 includes a gas cooker 1.
The rice cooker 5 is provided with a gas leak check device.

That is, a gas pipe 15 extends from the rice cooker 14, and an electromagnetic valve 16 is provided at an end of the gas pipe 15. The end of the electromagnetic valve 16 is connected to a gas tap. Although not shown, an electromagnetic valve similar to the electromagnetic valve 16 is also provided inside the rice cooker 14. Therefore, the gas pipe 15 is provided with the electromagnetic valves 16 at both ends. A pressure sensor 17 for measuring the gas pressure in the gas pipe 15 is provided.

The gas leak check is performed by the control device (not shown) according to the procedure shown in FIG. That is,
When the gas leak check process starts, the electromagnetic valve 1
Open 6. Next, it is determined whether or not the rice is being cooked. If not, the electromagnetic valve 16 is closed. As a result, the gas inside the gas pipe 15 is sealed at both ends, so that if the gas pipe 15 does not leak, a predetermined gas pressure is detected by the pressure sensor 17. Then, if the pressure is within the specified range, it is determined whether or not to cook rice. If the rice is ready to cook, the process returns to the step of opening the electromagnetic valve 16.

If there is a leak in the gas pipe 15, the pressure detected by the pressure sensor 17 decreases, so that an alarm or the like is generated and the operator makes repairs. Then, when the repair is completed, a reset button or the like is pressed to notify the completion of the repair, thereby opening the electromagnetic valve 16 for 3 seconds, and then returning to the step of closing the electromagnetic valve 16. And
It is checked whether or not the repair is complete by detecting the pressure of the pressure sensor 17.

By providing such a gas leak check function, a gas leak of the gas pipe 15 can be detected. The present invention is not limited to the above embodiment.

[0018]

According to the present invention, compared to the conventional method in which the drain valve is left open, the water can be washed neatly with a smaller amount of water supply. Also,
Since rice is polished after collecting water during rice polishing, cracking of rice is prevented.

[Brief description of the drawings]

FIG. 1 is a time chart of a stirring motor, a water supply valve, and a drain valve showing the method of the present invention.

FIG. 2 is a configuration diagram of a rice cooker for carrying out the method of the present invention.

FIG. 3 is a flowchart of a gas leak check process.

FIG. 4 is a time chart showing a conventional rice washing method.

[Explanation of symbols]

 6 Rice washing tank 10 Water supply valve 11 Drainage valve

Claims (1)

[Claims] 1. A water supply valve for turning on and off water supply to a rice washing tank, and a drain valve for turning on and off drainage of water in the rice washing tank, and timing of turning on and off the water supply valve and the drain valve. In the rice washing method wherein the rice washing step and the rice polishing step are repeated, the rice washing step starts water supply by opening a water supply valve with a drain valve closed, and water is introduced into the rice washing tank. When a predetermined amount is filled, the drain valve is opened, and both valves are kept open for a predetermined period of time. The rice polishing step closes a water supply valve, and drains when a predetermined amount of water in the rice washing tank is discharged. A method for washing rice, comprising closing a valve and maintaining both valves in a closed state for a predetermined time.