JPH0577373B2 - - Google Patents

Description

Detailed Description of the Invention <Industrial Application Field> The present invention relates to an apparatus for producing bulk frozen cooked rice, in particular an apparatus for cooling the surface of cooked rice, an apparatus for sieving lumps of cooled cooked rice, and This invention relates to an apparatus for manufacturing frozen cooked rice in bulk, which is combined with an apparatus for fully freezing granulated cooked rice.

<Prior Art> As means for freezing and preserving cooked rice, there are methods that use liquefied gas such as liquid chili pepper as a cold heat source for cooked rice, and methods that do not use this. Methods that use liquefied gas generally cost more to freeze cooked rice, so in recent years, so-called air blast methods have begun to appear, in which chilled air is blown onto the rice.

<Problem to be solved by the invention> However, to date, when trying to freeze cooked rice using the air blast method, lumps (also called clumps) of cooked rice tend to form, and when these lumps form, it is necessary to break them up into pieces. Gender arises. Depending on the performance of this breaking up device, there is a problem in that the production of broken rice, which reduces the commercial value of cooked rice, increases.

The present invention has been made in view of the above-mentioned problems, and its purpose is to prevent lumps from forming as much as possible when cooling cooked rice, and to sieve only the lumped cooked rice when lumps are formed. That is, it is an object of the present invention to provide an apparatus for producing frozen cooked rice in bulk form.

<Means for Solving the Problems> The present invention has been made in view of the above object, and the gist thereof is to have a cylindrical shape, a mesh side surface, and a scraping means extending in the internal axial direction. A drum device for cooling cooked rice, which is equipped with a rotating drum, a cold air supply means installed outside the rotating drum and sending air into the rotating drum through a mesh structure, and into which the cooled chunks of cooked rice are thrown. A hopper member, and first and second sieving members disposed in mesh with each other inside the hopper member, and these sieve members are moved in opposite directions in the direction of biting the cooked rice supplied to the meshing portion. The present invention relates to an apparatus for manufacturing frozen cooked rice in bulk, which includes a breaking device connected to a drive mechanism so as to rotate the cooked rice into pieces, and a cooler device for permanently freezing the broken cooked rice.

<Function> The drum device blows cooling air into the rotary drum using the cold air supply means, and then pours boiled cooked rice into the rotating drum. The large number of roughly rugby ball-shaped rice grains thrown in are rotated in different directions within the rotary drum by the action of the scraping means accompanying the rotation of the rotary drum, and are also rotated in different directions by the cold air supplied by the cold air supply means. It becomes like a blizzard and moves inside the rotating drum from the entrance to the exit. When it reaches the outlet, most of the surface is frozen and becomes loose, or it is cooled to the point where it only contains a few lumps.

Further, the lump-shaped cooked rice sent from the drum device enters the bulking device, where it is sieved and bulked. In this bulking device, a pair of sieving members each having a blade for bulking are rotated by respective rotating shafts. The first and second sieving members are operated to rotate in different directions to feed the cooked rice supplied to their meshing parts, so that the cooked rice does not scatter to the surroundings and becomes a single grain. be converted into

The single grained cooked rice is then permanently frozen in the cooler device to become bulk frozen cooked rice.

<Embodiment> FIGS. 1 to 6 are diagrams showing an embodiment of the present invention. Of these, FIG. 1 shows the entire apparatus for producing bulk frozen cooked rice according to the present invention. This device is freezer 1
A first cooler 2 is installed inside the cooler 2 to freeze the surface of cooked rice (hereinafter, boiled rice will be explained as a representative), and a first cooler 2 is installed inside the cooler 2 to freeze the surface of cooked rice (hereinafter, boiled rice will be explained as a representative). 2 cooler 3 and the second
a belt conveyor 4 for transporting the cooked rice frozen by the cooler 3; a drum device 5 for breaking the boiled rice into pieces to some extent and freezing the surface of the cooked rice; It consists of a disintegration device 6 for forcibly turning the lumps into single particles.

The first cooler 2 includes a cooler main body 7, a plurality of fans 8 attached to the cooler main body 7,
The fan 8 includes a fin 9 that regulates the flow direction of the cooling air sent out by the fan 8 toward the drum device 5. Further, the second cooler 3 includes the cooler main body 1
0, a plurality of fans 11 attached to this cooler body 10, and fins 12 that regulate the flow direction of the cooling air sent out by the fans 11 toward the belt conveyor 4. The belt conveyor 4 is installed in the freezer 1 so as to extend from the exit position of the drum device 5 and the bulking device 6 to a position outside the freezer 1 . A mesh-structured belt is used for the belt conveyor 4, so that the cooling air directed toward the cooked rice from the second cooler 3 can easily hit the cooked rice.

As shown in FIGS. 2 to 4, the drum device 5 has a cylindrical shape, and the side surface of the cylinder has a mesh 14 with a roughness (8 to 10 mesh) to prevent rice grains from falling.
The rotary drum 13 is formed by a rotary drum 13, and a plurality of fans 15a to 15e are provided adjacent to the side surface of the rotary drum 13. Rotating drum 13
When viewed in Figure 2, the left end portion is the inlet side and the right end portion is the outlet side. In this rotary drum 13, an input port 16 for supplying cooked rice is formed in the end wall on the inlet side as shown in FIGS. 17 are installed (Figure 1). In this case, it is also possible to use a screw or the like instead of the conveyor. Inside the rotating drum 13, a scraping means or scraping rod 18 is provided which is attached to the inner wall of the side surface and extends parallel to the axis of the drum.
The surface of the rice is cooled by the cold air from the oven. The scraping rods 18 have a substantially triangular cross section, and are installed in plural numbers at predetermined intervals in the circumferential direction, rising up from the inner wall of the side surface of the rotating drum 13 into the hollow interior. Also rotating drum 1
3, a plurality of partition plates 19 serving as cold air supply means are arranged at intervals equal to the diameter of the fan in the longitudinal direction.
a to 19d are attached. These partition plates 19a to 19d are composed of disks made of acrylic or other materials to which cooked rice does not easily adhere, and their radius is larger than the inner diameter of the rotating drum 13 by a height commensurate with the air volume and the moving speed of the cooked rice grains. The distance between the partition plates 19a to 19d and the rotating drum 13 is set to be shorter.
A space 20 is formed between the partition plates and the sides thereof, and chambers 26a to 26e for stirring cooked rice are formed between the partition plates. In addition, the partition plates 19a to 19d may be provided with mesh-lined ventilation holes in order to adjust the moving speed of the cooked rice grains.

The flow of air inside the rotating drum 13 is controlled by the fact that the input port 16 of the drum is blocked by a hooded input conveyor 17, and the partition plates 19a to 19d,
Since the outlet plate 24 and the hood 34 have a mesh ventilation structure, the wind can easily escape to the outlet (I
). An outlet plate 24 having an outlet 22 for cooked rice is attached to the outlet side of the rotating drum 13. This exit plate 24 is normally placed adjacent to the stay material and inserted into the rotating drum 13. With this, the outlet 2
From 2, single-grained cooked rice can be passed through. In addition, in the chamber 26e in which the cooked rice is stirred in the rotating drum 13, lumps of cooked rice remain at the narrow discharge port 22. The outlet plate 24 is moved from inside the rotating drum 13 to the outside every hour. In other words, the outlet plate 24 is supported by the shaft 25 and makes a stroke movement in the direction of the arrow K, intermittently moving toward and away from the stay material 21. In addition, exit plate 2
4 is attached with a mesh 23 that sends out cooling air. Further, the fans 15a to 15e near the outer side of the rotating drum 13 blow the cooling air sent from the first cooler 2 onto the rotating drum 13.

A crumbling device 6 is installed on the exit side of the drum device 5 to forcibly loosen the cooked rice that has formed into lumps. A hood 34 is provided to guide everything. This hood 34 has as many mesh vent holes 21 as possible so that the air can pass through without stopping the flow of air inside the drum 13.

As shown in FIGS. 2, 5, and 6, the bulking device 6 includes a hopper member 27 and a first sieving member 2 installed inside the bottom side of the hopper member 27.
8 and a second sieving member 29, and a first rotating shaft 30 and a second rotating shaft 31 that rotatably support the first and second sieving members 28 and 29, respectively. First and second sieving members 2
8 and 29 both have a roller structure, and each has a plurality of irregularly arranged dismantling blades 32 on the outer surface,
33 are arranged radially upright from the rotating shaft. Both sieving members 28 and 29 have blades 32 and 33.
The rotating shafts 30 and 31 are arranged parallel to each other so as to screen each other, while the first and second rotating shafts 30 and 31 are connected to the first and second screening members 2.
8 and 29 are connected to a motor or the like so as to rotate them in directions opposite to each other in a direction in which cooked rice fed into the meshing portions is bitten.

The operation of the drum device, the bulking device, and the manufacturing device for bulk frozen cooked rice including these will be explained.

The cooked rice is loosened to an appropriate temperature (40-60℃) and left to cool.
7, transported at an appropriate speed, and thrown into the rotating drum 13 through the slot 16.
At this time, the feeding conveyor 17 is insulated to prevent rice from freezing on the feeding conveyor 17 with a hood, and the conveyor 17 is insulated to prevent cooked rice that has already been put into the drum from being placed on top of the rice on the feeding conveyor.
fence. The rotating drum 13 containing cooked rice is rotated by a fan 15a at a predetermined rotation speed (for example, 30 rpm).
It is rotated in the direction of arrow J at ~15d. Then, the rice is first scraped up little by little by the scraping rod 18 in the first stirring chamber 26a, and as the rice grains rotate, the wind from the fan 15a (wind speed approximately
15 m/s or more), creating a blizzard and cooling the surface of the cooked rice. As a result, the rice becomes
The surface of the rice grains is frozen in pieces without sticking to each other. The flow of air inside the rotating drum 13 is through the input port 1.
6 toward the discharge port 22, the rice grains advance in the direction of arrow S in FIG. 2 while passing through the space 20. During this process, the rice grains are separated from the partition plate 19a.
Each stirring chamber 26a~ while being blocked by 19d
26e, and in each of the stirring chambers 26b to 26e, the above-described operation in 26a is carried out, and the time required for surface freezing in the rotating drum 13 is adjusted.

Next, in order to take out the surface-frozen rice grains from the rotating drum 13, firstly, between the exit plate 24 and the rotating drum 13, a
Open the outlet 22 between the holes of about 5 mm and place a chunk of cooked rice of a predetermined size (for example, 3 grains or less).
The rice grains that have been frozen in pieces are taken out. While the rice that has become single grains is taken out in this state, the exit plate 24 is stroked in the direction of arrow K in FIG. and discharge port 2
In step 2, the cooked rice that has become a lump of four or more grains (that is, clumps) is taken out in front of the outlet plate 24 without clogging it. This lump-like cooked rice is put into the breaking up device 6, where it is further loosened. In this bulking device 6, first and second sieving members 28, 29 are used.
The rice balls are rotating in different directions so as to bite into the rice, so the lumps of rice are
Agglomerates larger than grains are further broken down into single grains of three or less grains. Note that, depending on the size of the lump, a plurality of disintegrating devices with different meshes may be provided overlappingly.

While the rice thus made into single grains is transported by the belt conveyor 4, it is cooled by the second cooler 3 and is finally frozen. In addition to rice, cooked rice includes sweet corn, green peas, etc.

<Effects of the Invention> The apparatus for producing bulk frozen cooked rice in the present invention has the following features:
The overall device is characterized by a drum device, a crumbling device, and a cooler device being installed in series, and the cooked rice is cooled and broken into pieces and then frozen through these devices. In detail, a cold air supply means passes through a mesh structure on the side of a cylindrical rotating drum, and together with this, a scraping means installed in the axial direction inside the drum sends cooked rice in a blizzard shape. The material is loosened and finally frozen using a cooler device.

Therefore, the present invention is not a device that simply uses a drum device under refrigeration or breaks up cooked rice into pieces while being frozen, but rather breaks cooked rice into pieces through a breaking up device rather than a drum device. Therefore,
In the present invention, the cooked rice is first loosened uniformly around the entire circumference while stopping gelatinization using a drum device, and then almost all of the rice that has become lumpy is broken up using a breakup device using the drum device, resulting in a high quality product. retort pouch foods and frozen foods are now available.

In particular, in a drum device, the rice is evenly scraped around by a scraping means inside the rotating drum, and the mesh structure on the side of the drum allows the cooling air to pass through the stirred cooked rice on the side that crosses the direction of travel of the drum device. It is sprayed evenly to ensure that it is effective in discoloring the skin.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an embodiment of a manufacturing apparatus for bulk frozen cooked rice according to the present invention, and FIG.
Front view of the drum device included in the device shown in Figure 3.
The figure is an end view on the inlet side of the drum device, FIG. 4 is an end view on the outlet side of the drum device, FIG. The figure is a front view of this sieving member. 1... Freezer, 2... First cooler, 3...
Second cooler, 4... Belt conveyor, 5...
Drum device, 6...Blocating device, 13...Rotating drum, 14...Mesh, 15a to 15e...Fan, 16...Input port, 18...Scraping rod (means), 19...Partition plate ( cold air guide means), 27...
hopper member, 28, 29... sieving member, 32,
33...blade, 34...hood.

Claims (1)

[Claims] 1. A rotary drum having a cylindrical shape, a mesh structure on the side surface, and a scraping means extending in the internal axial direction; A drum device for cooling cooked rice, which is equipped with a cold air supply means for sending air; a hopper member into which the cooled chunks of cooked rice are thrown; and first and second drums disposed in mesh with each other inside the hopper member. A sieving member; a breakup device that connects these sieving members to a drive mechanism so as to rotate in opposite directions to each other in a direction in which the sieving members feed into the cooked rice supplied to their meshing portions; and the broken cooked rice. A manufacturing device for bulk frozen cooked rice, which is equipped with a cooler device for freezing the rice.