JPH09107896A - Steaming and cooking grains and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with equipment for dipping by sufficiently pregelatinizing grains between a primary and a secondary steaming steps even without dipping the grains in high-temperature water by sprinkling water on the grains in both the primary and secondary steps. SOLUTION: Water is sprinkled on grains in both a primary and a secondary steaming steps when the primary and secondary steamings of grains are respectively carried out with steam. For that purpose, an apparatus for steaming and cooling rice equipped with a water sprinkling means for sprinkling water on the grains such as water sprinklers 6 and 10 installed in a primary steaming device 2 and a secondary steaming device 3 is used to cook the grains. The apparatus is preferably provided with a cooler 12 for cooling the grains after the secondary steaming step, netlike conveyors 4 and 8 for conveying the grains, ultrasonic cleaning devices for preventing the conveyor from being clogged, crushers 7, 11, etc., 1 for loosening the grains heated with the steam while being sprinkled with water. When the white rice is cooked, the water sprinkling temperature is preferably 70-90 deg.C. When SEKIHAN(cooked rice with red beans) or OKOWA(steamed rice mixed with red beans) is cooked, cold water is preferably sprinkled thereon.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for steaming and cooking cereals, and more specifically to a method and apparatus for steaming cooked rice such as cooked rice in a so-called primary steaming step and then pregelatinization in a secondary steaming step. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, there is an invention described in Japanese Examined Patent Publication No. 63-37616 as a method and apparatus for steaming and cooking rice of this kind.

That is, this conventional apparatus is a primary steaming apparatus for supplying steam to cook grains, a dipping apparatus for dipping the steamed grains in high temperature water, and a dipping apparatus for dipping the grains after the dipping. It is equipped with a secondary steaming device for performing alpha conversion.

[0004] In this device, the grain is preliminarily dipped in the dipping device before the secondary steaming step, so that the α-formation reaches the central part of the grain and the complete α-formation is performed. It is the one.

[0005]

However, in such a device, since the dipping device for storing high temperature water is provided between the primary steaming device and the secondary steaming device, the entire device is very large. There is a problem in that it becomes large in size and it is necessary to take a large space for equipment.

The present invention has been made in order to solve such a problem, and the size of the entire apparatus is remarkably reduced as compared with the above-mentioned conventional apparatus, and thus the space required for the equipment is reduced and the secondary device is used. It is an object of the present invention not to reduce the action of complete alpha conversion in the steaming process.

[0007]

Means for Solving the Problems The present invention has been made as a method for steam-cooking and cooking cereals and a device therefor in order to solve such a problem. After supplying and performing primary steaming, in the steamed rice cooking method of cereals in which steam is further supplied to perform secondary steaming, in both the steps of primary steaming and secondary steaming, the primary steaming and secondary steaming are performed. It is to water the grains.

[0008] Further, the features of the steamed rice cooker for cereals are as follows: a primary steaming device 2 for supplying steam to the cereals for primary steaming, and after the primary steaming by the primary steaming device 2, further steam is supplied for the second steaming. In the grain steaming and cooking device including the secondary steaming device 3 for performing the secondary steaming, when performing the primary steaming and the secondary steaming, a sprinkling means for spraying water on the primary steamed and secondary steamed grains is provided. It is provided in the primary steaming device 2 and the secondary steaming device 3.

That is, by performing water spraying in both the steps of primary steaming and secondary steaming by means of the above-mentioned water spraying device, soaking with high temperature water is carried out between the steps of primary steaming and secondary steaming. Even if it does not exist, sufficient alpha conversion will be performed.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

In FIG. 1 and FIG. 2, reference numeral 1 is a main body of a steaming rice cooker, which is a primary steaming device 2 for supplying steam to cooked rice to perform primary steaming for cooking rice, and after the primary steaming by the primary steaming device 2, Further, it is configured with a secondary steaming device 3 for supplying steam to perform secondary steaming for converting the rice grains into α.

The primary steaming device 2 is provided with a metal mesh conveyor 4 and a steam supplier (not shown) for supplying steam to the cooked rice conveyed on the conveyor 4.
Is provided below the cooked rice conveying path of the conveyor 4.

Reference numeral 5 denotes an ultrasonic cleaning device for preventing clogging of the mesh of the conveyor 4, which is provided below the cooked rice conveying path of the conveyor 4.

Reference numeral 6 denotes a sprinkler for sprinkling the cooked rice conveyed on the conveyor 4, which is capable of sprinkling warm water of about 80 ° C. in a shower shape. The sprinklers 6 are provided at three locations on the primary steaming device 2.

Numeral 7 is a crusher for loosening the grains that are steam-steamed while being sprinkled by the sprinkler 6, and includes a total of the primary steaming device 2 including one portion adjacent to the secondary steaming device 3 (boundary portion). It is provided at four locations.

The secondary steaming device 3 is also similar to the primary steaming device 2 in that the conveyor 8, a steam supplier (not shown), an ultrasonic cleaning device 9, a sprinkler 10, and a crusher.
It has eleven.

However, this secondary steaming device 3 is provided with a sprinkler 10
Is provided in two places, and the crusher 11 is provided in a total of three places of the secondary steaming device 3 including one part adjacent to the cooling device 17 (boundary part). Is different from.

Reference numeral 12 is a cooling device for cooling the cooked rice after the secondary steaming process of cooked rice by the secondary steaming device 3. The cooling device 12 is also provided with a wire mesh conveyor 13.

A cooling tank 16 is connected to the cooling section 14 of the cooling device 12 via a pipe 15.

The primary steaming device 2 is also provided in the cooling device 12.
Also, an ultrasonic cleaning device 17 is provided like the secondary steaming device 3.

Further, the cooling device 12 has a seasoning liquid,
There are two water sprinklers 38 for spraying vinegar and salt water, three at two places, a total of six, and a crusher 39 similar to the crushers 7 and 11 of the primary steaming device 2 and the secondary steaming device 3. It is provided in three places.

Further, the primary steaming device 2, the secondary steaming device 3, and the cooling device 12 are respectively provided with exhaust ducts 18, 19, 20 for discharging steam.

Reference numeral 21 denotes a take-up conveyor for taking out the cooked rice cooled by the cooling device 17, and the take-up conveyor.
A weighing device 22 for weighing the cooked rice discharged in 21 is provided.

A salt water tank 23, a vinegar tank 24, a seasoning liquid tank 25, and an oil tank 2 are provided beside the primary steaming device 2.
6. A pH adjusting agent tank 27 is provided respectively.

28, ... are rice storages for storing rice,
There are four places to store rice according to the type of rice.

Reference numerals 29 and 30 denote a receiving weighing machine and a paying weighing machine for weighing the rice supplied from the rice storage 28.

Reference numerals 31 and 32 denote elevators for supplying the cooked rice to the receiving weighing machine 29, the dispensing weighing machine 30 and the like in an elevating state.

Reference numeral 33 is a rice washing separator for separating the washed rice from water, and 34 is an immersion tank for storing rice and water at the time of separating the washed rice. Three dipping tanks are provided depending on the type of rice.

Reference numeral 35 denotes a conveyer for supplying the rice after washing and separation to the primary steaming device 2, and 36 denotes a hopper for feeding the rice from the conveyor 35 to the primary steaming device 2.

Reference numeral 37 denotes a shutter for adjusting the rice fed from the above 36 to a constant thickness during transportation.

Reference numeral 38 denotes a steam cleaner for keeping the steam supplied to the primary steaming device 2, the secondary steaming device 3 and the cooling device 12 in a clean state.

Next, a method of steam-cooking cooked rice using the steam-cooking rice cooker having the above-described structure will be described.

First, rice is supplied from the rice storage 28 to the receiving weighing machine 29 and the dispensing weighing machine 30, and the receiving weighing machine 29 and the dispensing weighing machine 30 are supplied.
The rice is weighed with, washed with a rice washing machine (not shown), further supplied to the rice washing separator 33, and the rice after washing and water are stored in the dipping tank 34, and the rice is separated and conveyed by the conveyor 35. , Through the hopper 36 to the primary steaming device 2.

Next, the rice supplied to the primary steaming device 2 is
The thickness is adjusted by the shutter 37 so that the thickness is constant during transportation. The thickness is adjusted to 50 mm, for example.

By adjusting the thickness of cooked rice conveyed by the shutter 37 in this manner, the amount of cooked rice to be steam-cooked is also automatically adjusted.

Next, the rice whose thickness has been adjusted as described above is conveyed in the direction of arrow a in FIG. 3 on the conveyor 4 of the primary steaming device 2. During the conveyance, steam is supplied from the steam supplier. Will be supplied. This steam is sprayed on the rice via the wire mesh conveyor 4, and as a result, rice is cooked.

The steam from the steam feeder is constantly kept in a clean state by the steam cleaner 38.

Further, a steam heating device (not shown) is separately provided, and saturated steam is heated to 110 ° C. to 115 ° C. in order to improve the finish and alpha conversion of cooked rice immediately after cooking with the steam heating device.
It will be heated to ℃.

On the other hand, simultaneously with the supply of steam from the steam supplier, warm water of about 80 ° C. is sprayed on the cooked rice from the sprinklers 6, 6, 6 in a shower shape.

Further, the cooked rice conveyed by the primary steaming device 2 is sprinkled by the sprinkler 6 as described above and, at the same time, is loosened by the crusher 7.

From the sprinkler 6, if necessary, together with hot water, a penelope (oil) from the oil tank 26, and p
The pH adjusting agent from the H adjusting agent tank 27 is sprinkled.

Next, the cooked rice primarily steamed by the primary steaming device 2 as described above is supplied to the secondary steaming device 3, and inside the secondary steaming device 3 on the conveyor 8 in the direction of arrow B in FIG. Be transported to.

Even when cooked rice is conveyed on the conveyor 8 in the secondary steaming device 3, steam is supplied from the steam feeder to the cooked rice being conveyed, and at the same time when the steam is supplied, Warm water of about 80 ° C is sprayed on the cooked rice from the sprinklers 10 and 10 like a shower and the crusher
It will be loosened at 11.

During the primary steaming process and the secondary steaming process in the primary steaming device 2 and the secondary steaming device 3 as described above,
In addition to the supply of steam from the steam supplier, by spraying warm water of about 80 ° C. from the sprinklers 6 and 10, the inside of the rice grain is also gelatinized.

Further, since the water is sprinkled in this manner and is loosened by the crushers 7 and 11, the crushers 7 and 11 are
The warm water sprinkled as described above is evenly attached to the cooked rice that is loosened, and as a result, the rice grains are gelatinized more reliably.

In addition, as a result of the reliable alpha conversion due to the warm water sprinkling from the sprinklers 6 and 10 as described above, the high temperature water of the cooked rice between the conventional primary steaming step and secondary steaming step can be obtained. The dipping process is unnecessary.

As a result, the primary steaming device 2 and the secondary steaming device 3 can be installed close to each other as described above, and the entire device can be remarkably downsized as compared with the conventional one.

Further, the cooked rice cooked and cooked after the above-described primary steaming and secondary steaming are supplied to the cooling device 12.

The cooked rice supplied to the cooling device 12 is conveyed by the conveyor 13, and is cooled by the air supplied to the cooling section 14 via the pipe 15 by the cooling tank 16 during the conveyance.

With this cooling device 12, the temperature of cooked rice is cooled from about 70 ° C to about 25 ° C.

In the cooling device 12, the salt water from the salt water tank 23, the vinegar tank 24, and the seasoning liquid tank 25 are
Vinegar and seasoning liquid are sprinkled from the sprinkler 38, and the crusher 39 loosens the cooked rice.

Further, in each of the primary steaming device 2, the secondary steaming device 3 and the cooling device 12, the ultrasonic cleaning device 5,
9 and 17 are provided, respectively, even if the glue content of the cooked rice adheres to the mesh of the conveyors 4, 8 and 13 and the steam supply from the steam supply device becomes defective, the ultrasonic cleaning device It is possible to remove the amount of glue adhering to the meshes of the conveyors 4, 8 and 13 with 5, 9 and 17, so that the steam supply can always be maintained smoothly.

Further, since the steam generated in the primary steaming device 2, the secondary steaming device 3 and the cooling device 12 is discharged by the exhaust ducts 18, 19, 20 so that the steam does not stay in each device.

The types of cooked rice cooked and cooked by the above-described steam cooker can be applied to red rice, edible wild plants, gome rice, etc., in addition to simple white rice, and the type is not limited.

Although the present invention is mainly intended for steamed and cooked cooked rice, the present invention can also be applied to grains other than cooked rice such as wheat.

Furthermore, the number of sprinklers 6 and 10 provided in the primary steaming device 2 and the secondary steaming device 3, respectively, is not limited to three or two in the embodiment, and the number thereof is not limited. .

Also, the means for watering does not matter.
The point is that sprinkling may be performed in each of the primary steaming step and the secondary steaming step.

Further, the means for supplying steam in both steps does not matter.

Further, in the above embodiment, the primary steaming device 2 and the secondary steaming device 3 are respectively configured so that the cooked rice is conveyed by the wire mesh conveyors 4 and 8. However, the grains such as cooked rice are conveyed. The means is not limited to the conveyors 4 and 8 as described above, and the conveying means may be any means.

Further, in the above-described embodiment, the cooling device 12 cools the cooked rice after the secondary steaming step, so that the cooling amount is about 70.
Although it was possible to cool the cooked rice at 25 ° C. to 25 ° C. at a stretch, and as a result, the working efficiency could be remarkably increased, the provision of the cooling device is not an essential condition in the present invention.

Further, in the above-described embodiment, the above-described preferable effects were obtained by providing the ultrasonic cleaning devices 5, 9, 17; however, such ultrasonic cleaning devices 5, 9,
Providing 17 is not an essential condition for the present invention.

Further, although the width of the conveyors 4, 8 and 13 does not matter, the ultrasonic cleaning devices 5 and 9 as described above,
When the 17 is provided, the width is preferably set to 600 mm or less in the sense that the effect of preventing clogging of the conveyors 4, 8 and 13 by the ultrasonic cleaning devices 5, 9 and 17 is effective.

The conveying speed of the conveyors 4, 8 and 13 is also
It can be arbitrarily changed according to the purpose.

Further, in the above-mentioned embodiment, since the crushers 7, 11, 39 are provided, the preferable effect that the hot water sprinkled as described above is evenly attached to the cooked rice to promote the gelatinization of the cooked rice is obtained. The provision of the crushers 7, 11, 39 is not an essential condition for the present invention.

The shapes of the crushers 7, 11, 39 are not limited.

Further, in the above embodiment, the primary steaming device 2
Since the shutter 37 was provided near the entrance of the, the above-mentioned preferable effect was obtained.
The provision of is also not an essential condition of the present invention.

The point is that, in the present invention, the primary steaming device 2 and the secondary steaming device 3 having the water sprinkling means may be provided.

Further, in the above-mentioned embodiment, the hot water of about 80 ° C. was used for spraying, but the temperature of the sprayed hot water is not limited to this. However, it is preferably in the range of 70 to 90 ° C.

When cooking white rice, 70
Sprinkling with warm water of up to 90 ° C is preferable, but in the case of cooking red rice or rice with rice, it is preferable to sprinkle cold water.

Therefore, in any case, the temperature of the sprinkling water is not limited, and either hot water or cold water can be used.

Further, the means for supplying rice to the primary steaming device 2 is not limited to the above embodiment.

[0072]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, the grains to be primary-steamed and secondary-steamed in both the steps of primary steaming and secondary steaming performed by supplying steam to grains such as cooked rice. Since it is sprinkled with water, sufficient gelatinization can be performed without dipping in high temperature water between the steps of primary steaming and secondary steaming.

Therefore, the step of immersing the cooked rice in the high temperature water between the primary steaming step and the secondary steaming step, which is required in the prior art, becomes unnecessary, and the apparatus for soaking becomes unnecessary. Since it can be installed close to the steaming device, there is an effect that the entire device can be remarkably downsized as compared with the conventional one.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a steam cooking and rice cooking device as one embodiment.

FIG. 2 is a schematic plan view of the same.

FIG. 3 is a schematic side view for explaining a conveyor process and a water sprinkling process.

FIG. 4 is an enlarged schematic plan view of an essential part showing an arrangement state of a sprinkler and a crusher.

[Explanation of symbols]

 1 ... Steamed rice cooker body 2 ... Primary steaming device 3 ... Secondary steaming device 4, 8 ... Conveyor 5, 9 ... Ultrasonic cleaning device 6, 10 ... Sprinkler 7, 11 ... Crusher 12 ... Cooling device 37 ... Shutter

Claims (8)

[Claims] 1. A method for steaming and cooking rice, wherein steam is supplied to the grains to perform primary steaming, and then steam is further supplied to perform secondary steaming, in the steps of both the primary steaming and the secondary steaming. Then, a method for steaming and cooking grains is characterized in that the grains to be steamed first and second are sprinkled with water. 2. The method of steaming and cooking rice according to claim 1, wherein the water spraying in the primary steaming and secondary steaming steps is performed with hot water at 70 to 90 ° C. 3. A primary steaming device (2) for supplying steam to cereals for primary steaming, and a secondary steaming device for supplying secondary steaming after further steaming by the primary steaming device (2). In a steam-cooking rice cooking device for grains comprising a steaming device (3), when performing the primary steaming and the secondary steaming, a spraying means for spraying water on the grains to be steamed primary and secondary is the primary steaming device. (2) and a secondary steaming device (3), which is provided with a steaming and cooking device for cereals. 4. The sprinkling by the sprinkling means in the primary steaming and secondary steaming steps is performed with hot water at 70 to 90 ° C.
Steamed rice cooker for the listed grains. 5. A cooling device (12) for cooling the grain after the secondary steaming step in the secondary steaming device (3) is the secondary steaming device.
The steamed rice cooker for grains according to claim 3 or 4, which is provided adjacent to (3). 6. The primary steaming device (2) and the secondary steaming device
(3) is a mesh conveyor that conveys the grains to be cooked.
(4), (8) are provided respectively, and the conveyor (4), (8)
An ultrasonic cleaning device (5), (9) for preventing clogging of meshes of the conveyors (4), (8) is provided below the conveyor.
5. A steamed rice cooker for grains according to any one of 1 to 5. 7. The primary steaming device (2) and the secondary steaming device (3) are provided with crushers (7), (11) for loosening grains that are steam-steamed while being sprayed by the spraying means. A steamed rice cooker for grains according to any one of claims 3 to 6. 8. The steamed rice cooker for grains according to claim 3, wherein a shutter (37) for setting the thickness of the grain when being transported is provided in the primary steaming device (2). .