JPH08150077A - Method and device for cooking rice for business use - Google Patents

Abstract

PURPOSE: To reduce crushed rice and to cook rice after completely discharging the rice by jetting pressurized air while washing the rice and while discharging the rice. CONSTITUTION: This rice cooking device for business use is provided with a filter cylinder 19 on the bottom part of a rice washing tank 4 for washing measured rice, a waste water jacket 20 provided with a rice discharge port 7 surrounding the filter cylinder 19, a rice discharge valve 8 for opening and closing the rice discharge port 7 and the pot 32 of a rice cooker 5 below the rice discharge port 7. The waste water jacket 20 is provided with a nozzle 26 for jetting the pressurized air to the filter cylinder 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for cooking rice for business use, and is used for mass cooking rice in restaurants, sushi restaurants, hotels and the like.

[0002]

2. Description of the Related Art A rice cooker for business use which automatically programs large amounts of rice by weighing rice, washing rice, rice cooked, etc.
It is known in Japanese Patent Laid-Open No. 08888 and Japanese Patent Laid-Open No. 5-220409, and is becoming popular in the market due to the gourmet boom.

[0003]

In the conventional rice cooking method and apparatus, each process of weighing rice, washing rice, adjusting water, cooking rice, etc. is programmed. I have. During this colander raising process, rice naturally deposits at the rice discharge port at the bottom of the rice washing tank, and residual rice is produced only by opening the rice discharge valve. It rotated to move the rice and remove it.

However, when rice is discharged, if the washing blade is rotated for a long time, rice cracking and turbidity may occur, which may adversely affect the quality of cooked rice. Further, a filter cylinder was provided at the bottom of the rice washing tank to drain the bran generated during rice washing, but the bran adhered to and accumulated in the filter barrel, which was a cause of clogging. Therefore, the present invention enables smooth and quick rice discharge by ejecting a pressurized gas (air) to the rice deposited on the bottom of the rice washing tank during rice discharge to vibrate and loosen the rice. At the same time, the purpose is to enable the removal of bran.

[0005]

[Means for Solving the Problems] The present invention is to cook commercial rice in which the weighed rice is washed in the rice-washing tank 4, the colander is raised, and then water is added and discharged into the pot 32 of the rice cooker 5 to cook rice. In the method, the following technical measures are taken to achieve the above-mentioned object. That is, the method of the present invention according to claim 1 is
After raising the colander, a gas is introduced into the rice deposited on the bottom of the rice washing tank 4 to loosen the deposited rice and discharge the rice.

Further, according to the present invention, a filter barrel 19 is provided at the bottom of the rice washing tank 4 for washing the weighed rice, and the rice outlet 7 is surrounded by the filter barrel 19.
In addition to the above-described drainage jacket 20, the rice discharging valve 8 for opening and closing the rice discharging port 7 is provided, and the rice cooker 5 has the pot 32 below the rice discharging port 7. The following technical measures are taken to achieve the purpose.

That is, the device of the present invention according to claim 2 is
The drainage jacket 20 is equipped with a nozzle 26 for ejecting a pressurized gas to the filter cylinder 19.

[0008]

According to the present invention, when the rice is discharged after the colander is raised, the pressurized gas (pressurized air) is jetted from the nozzle 26 provided in the drainage jacket 20 so that the rice is introduced into the filter cylinder 19 of the rice washing tank 4. The deposited rice is vibrated and loosened. Further, when the pressurized gas is ejected from the nozzle 26 to the filter cylinder 19 before the rice discharge, the bran adhering to the cylinder 19 is removed.

After the deposited rice is loosened or when the rice discharge valve 8 is opened while being loosened, the rice is discharged into the rice cooker 5 in the rice cooker 32 without remaining rice in the rice discharge port 7.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 (A) and 1 (B) showing the overall configuration, a commercial rice cooker 1 according to the present invention comprises a rice storage tank 2 at the top and a metering device 3 provided at the bottom of the rice storage tank 2. The rice washing tank 4 for receiving the weighed rice and washing the rice, and the rice cooker 5 which is provided directly below the rice washing tank 4 so as to be horizontally movable in and out.

The metering device 3 is a hollow drum type rotating in one direction by an electric motor, and has a spiral cutout 3A formed in the drum as shown in FIG. Rice is fixedly divided according to the number of revolutions and drops downward, and it is of a pulse counting type that is controlled by transmitting a set value pulse of a counter preset by a fixed amount dial.

A funnel-shaped chute 6 is arranged immediately below the metering device 3 on the top plate 4A of the rice washing tank 4, and the weighed rice can be introduced into the rice washing tank 4 through the chute 6. The rice washing tank 4 is a cylindrical body whose lower part is formed in a funnel shape, and a rice discharging port 7 is opened at the bottom thereof, and the rice discharging port 7 can be freely opened and closed by a rice discharging valve 8 exemplified by a conical valve. Has been done.

At the longitudinal center of the rice washing tank 4, a cylindrical rotating shaft 9 is supported by a top plate 4A of the rice washing tank 4 via a bearing 10 and is rotatable by a motor 11 and a winding body 12. By providing the stirring rod 13 on the rotary shaft 9 in a radial arrangement, it is possible to wash (polish) the measured rice for a predetermined time. A valve rod 14 attached to the rice discharging valve 8 is inserted into the hollow portion of the rotary shaft 9, and an ascending / descending means 15 such as a cam, a link or a motor is connected to the upper portion of the valve rod 14 as shown in FIG. As a result, the rice discharge valve 8 is moved up and down to open and close the rice discharge port 7.

The rice washing tank 4 is provided with a water supply means 16 which is connected to a water supply system by piping, and water can be supplied by turning on / off an electromagnetic type opening / closing valve 17 and a nozzle 18 and adjusting the opening degree of the opening / closing valve 17. It is possible to adjust the amount of water addition by controlling the water supply time, etc. with the control unit. At the bottom of the rice washing tank 4,
A drainage jacket 20 is provided so as to surround a filter cylinder 19 made of a filter mesh, and a drainage system is connected to the drainage jacket 20 via a drainage box 22 having an electromagnetic on-off valve 21. As shown, a vertical pipe 24 having a float 23 is communicated, and the upper portion of the pipe 24 is connected to the upper portion of the rice washing tank 4 by an overflow pipe 25.

A nozzle 26 for ejecting a pressurized gas (pressurized air) to the filter cylinder 19 is provided in the drainage jacket 20 so as to face the drainage port 21A. The nozzle 26 is provided on the top plate 4A. A hose 28 is connected to the pressurizing pump 27. The rice cooker 5 is a stand 29 which can be freely moved in and out in the horizontal direction.
An outer pot 31 having a stove portion 30 is placed on the inner pot 32, and an inner pot 32 is removably fitted in the outer pot 31. The inner pot 32 can be opened and closed by a lid 33 that fits the upper opening of the inner pot 32. Is.

In the illustrated embodiment, when the rice cooker is on standby just below the drainage port 7, a receiving port 34 is formed in the central portion of the lid 33 so as to put the hydrated rice into the inner pot 32. The receiving port 34 can be opened and closed by a shutter. In addition, since the lid 33 is left in the refrigerator after cooking rice,
The lid 33 is an opening / closing arm 3 which is vertically moved around a fulcrum 35.
6.

However, the rice cooker 5 may be a commercially available electric or gas rice cooker, and at this time, the rice can be received in the inner pot with the lid open or removed, and the rice cooker is sealed after the receipt. Rice is cooked in the state. Further, the rice cooker 5 may be of a type in which only the inner pot 32 is provided directly below the rice washing tank 4 and the inner pot 32 is loaded into a separately installed multi-stage rice cooker.

Further, the filter cylinder 19 has a large number of holes through which rice grains do not pass but the rice bran is discharged out of the machine together with water, and is provided detachably together with the valve seat 8A as shown in FIG. Next, a series of steps from weighing to cooking will be described. The rice (domestic rice, imported rice, etc.) X in the rice storage tank 2 is weighed by the quantitative meter 3 and put into the rice washing tank 4 to enter the rice washing process.

During this rice washing process, the rice discharging port 7 is closed by the rice discharging valve 8, while the drain valve 21 is opened, and the stirring rod 14 is rotationally driven while supplying water from the water supply nozzle 18. Made in. During this rice washing process, when pressurized gas is supplied from the nozzle 26 into the rice washing tank 4, the bubbles rise in the tank, and the rice is softly washed by the bubbles and the rice is rapidly polished by the stirring rod 14. The rice is washed uniformly and the bran is discharged as muddy water outside the machine.

After washing the rice, excess water and the like are drained out of the machine all at once, and then transferred to the colander raising process. If pressurized gas is ejected from the nozzle 26 before the colander raising process, the filter cylinder 19 is ejected.
The bran that is trying to adhere to and grow on is discharged to the outside of the machine. After removing the bran, the drain valve 21 is closed and the process proceeds to the colander raising process for a predetermined time. At the time of colanding, the rice is deposited rice above the rice discharge port 7, that is, the inside of the filter cylinder 19, and the moisture content increases. And the weight from the upper layer acts, residual rice is produced even if the rice discharge valve 8 is opened and the stirring rod 14 is rotated after raising the colander.

Therefore, when the rice is discharged, a pressurized gas is ejected from the nozzle 26 to the filter cylinder 19 to loosen or loosen the deposited rice, and the rice discharging port 7 moves to the inner pot 32 along the parabolic locus shown in FIG. Will be thrown in. At the time of this rice discharging, it is convenient to feed the adjusted water to flow down the rice adhering to the inner wall of the rice washing tank 4, and it is also possible to freely rotate the stirring rod 14.

Even if the stirring rod 14 is rotated, the deposited rice is loosened by the pressurized gas and the flow (downflow) thereof is smooth and quick, so that the stirring rod 14 can be rotated in a short time. The generation of broken rice can be reduced. After the rice removal (water removal rice removal), the rice is cooked through a soaking process, and cooked after steaming, but the rice cooking process can also be performed by a separately installed rice cooking device.

[0023]

As described above in detail, according to the present invention, by introducing the pressurized gas, not only the rice washing process can be surely and speedily performed, but also the removal of the bran before the colanding and the colanding The subsequent rice removal can be performed reliably and quickly, and the rate of broken rice can be suppressed.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (A) is an overall configuration diagram,
(B) is a perspective view of a main part.

FIG. 2 is a vertical sectional view of an essential part showing an embodiment of the present invention.

[Explanation of symbols]

 2 Rice storage tank 3 Quantitative machine 4 Rice washing tank 5 Rice cooker 7 Rice discharging port 8 Rice discharging valve 19 Filter cylinder 20 Drainage jacket 26 Pressurized gas nozzle 32 Kettle

Claims (2)

[Claims] 1. Washing the measured rice in a rice washing tank (4), raising the colander, and then adding water to the rice cooker's (5) pot (3).
In the commercial rice cooking method of discharging rice to 2) and cooking rice, a feature is that gas is introduced into the rice deposited at the bottom of the rice washing tank (4) after raising the colander to loosen the deposited rice and remove the rice. How to cook rice for business use. 2. A rice washing tank (4) for washing measured rice is provided with a filter tube (19) at the bottom thereof, and a drainage jacket (20) surrounding the filter tube (19) and having a rice discharge port (7) is provided. At the same time, a rice discharge valve (8) for opening and closing the rice discharge port (7) is provided,
A commercial rice cooker equipped with a pot (32) of a rice cooker (5) below the rice discharge port (7), wherein pressurized gas is applied to the filter barrel (19) in the drain jacket (20). A rice cooker for business use, comprising a jetting nozzle (26).