JPS6358546B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for boiling grains such as rice, wheat, beans, corn, etc., and particularly to a device for boiling large amounts of grains deliciously in a short period of time.

(Conventional technology) Traditionally, grains are boiled in a pot.
There was a limit to the amount of grain that could be heated evenly at one time. For this reason, an apparatus for continuously boiling grains has been developed (see, for example, Japanese Patent Application Laid-Open No. 59-224661). This device heats the grains, absorbs water, and steams them while the grains to be boiled are conveyed by a belt conveyor. However, with only these steps, only the surface of the grain may become gelatinized, making it impossible to obtain delicious grain. Furthermore, since the material is transported by a belt conveyor, the efficiency of water absorption, heating, etc. is poor, and energy is wasted.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned problems of the prior art, and its purpose is to provide an apparatus that can deliciously boil grains. Another object of the invention is to
The purpose of the present invention is to provide a device that can save energy and boil grains with high efficiency. A further object of the invention is to provide a grain boiling device which is extremely simple in construction.

(Means for Solving the Problems) The grain boiling device of the present invention has a plurality of water-permeable buckets into which a predetermined amount of grains are put, a conveying device for intermittently transporting each bucket, and a It is installed so that it can be raised and lowered on the upstream side of the transport area of the transport device, and circulates hot water at a temperature of about 50 to 60℃.It descends when the bucket is moving, and rises when the bucket stops moving, immersing the bucket in the hot water. A first hot water tank for causing the grains to absorb moisture; a first heating means that is connected downstream of the first hot water tank and heats the grains in the bucket to about 100°C; The hot water at about 100℃ is circulated downstream of the heating means, and it descends when the bucket moves, and rises when the bucket stops moving, allowing the grain to be immersed in the hot water. The second part absorbs moisture.
a belt conveyor connected to the downstream end of the conveyance device and onto which the grains in the bucket are transferred;
A second heating means is provided for heating the grains transferred to the belt conveyor during the conveyance thereof, thereby achieving the above object.

(Example) Examples of the present invention will be described below.

The grain boiling device of the present invention is shown in FIGS. 1 and 2.
As shown in the figure, a transport device 1 located on the upper side,
A belt conveyor 2 is provided below and parallel to the conveyor 1 and whose conveyance direction is opposite to that of the conveyor 1. In the transport area of the upper transport device 1, a first water tank 3, a first heating means 4, and a second water tank 5 are sequentially arranged from the upstream side to the downstream side. A second heating means 6 is arranged on the lower belt conveyor 2.

The upper conveyance device 1 includes a pair of pulleys 11, 11.
and a belt 12 wound between both pulleys 11, 11 are installed in parallel.
It moves around intermittently every minute. A large number of bucket belts 13, 13, . . . are fixedly installed between both belts 12. Each bucket 13 is made of a water-permeable material (for example, wire mesh). A hopper 7 is disposed above the starting end of the conveyance device 1, and a quantitative meter 71 using a geared motor is mounted below the hopper 7. Grains to be boiled are put into the hopper 7, and a predetermined amount is put into each bucket 13 by a meter 71.

The first bath 3 has three adjacent buckets 13.
It has a size that can accommodate a large number of people, and can be raised and lowered in synchronization with the intermittent movement of the bucket 13. In other words, Bucket 1
When the bucket 13 is moved, the tub 3 is lowered and held at a lower position, and when the bucket 13 stops moving, it is raised and held at an upper position.

The bottom of the hot water tank 3 communicates with a pump 34 via a flexible tube 31, as shown in FIG. Heater 3
The lower part of 3 communicates with a pump 34. Heater 3
A filtration net 35 is provided within the filter 3, and a steam pipe 36 is provided within the filtration net 35 so that steam heated to a predetermined temperature flows therethrough. Therefore, hot water heated to about 50 to 60°C by the steam in the heater 3 is sent to the hot water tank 3 through the flexible tube 31 by the pump 34, and the hot water in the hot water tank 3 is fed through the flexible tube 32. It is refluxed to the heater 33. The hot water returned to the heater 33 is filtered through a filter net 35, and then passed through a steam pipe 36.
After being heated at , it is fed to the hot water tank 3 again. A pipe 37 is disposed within the hot water tank 3, and hot water at a temperature of 50 to 60° C. flows through the pipe. Therefore, the hot water in the hot water tank 3 is constantly circulated at a temperature of 50 to 60°C. The hot water tank 3 is connected to a pump 34 and a heater 33, and since flexible tubes 31 and 32 are used for each connection, the hot water tank 3 can be raised and lowered without any trouble. Then, when the hot water tank 3 is raised, the three buckets 13, 13, 13 located above are immersed in the hot water in the hot water tank 3, and the grains in each bucket 13 absorb water. In addition, the steam pipe 36 and the pipe 3
Although high-temperature steam and hot water are passed through the hot water bath 7 to heat the surrounding atmosphere, live steam may be directly injected into the hot water bath to heat it. For hygiene reasons, it is preferable to heat the pipe indirectly by passing high-temperature steam or hot water through the pipe.

As the heating means 4 provided on the downstream side of the hot water tank 3, for example, steam at about 100° C. is used, which is supplied through a plurality of steam pipes 41 extending in a direction perpendicular to the conveying direction of the bucket 13. While flowing through the steam pipe 41, the steam heats the surrounding atmosphere. The three buckets 13 are heated by the heating means 4 while being transported. Therefore, the time for heating the grains in one bucket 13 is 6 to 9 minutes. In addition, steam pipe 41
Although it is possible to directly inject the steam flowing through the bucket 13 to heat it, it is preferable to heat it indirectly from a sanitary standpoint.

A second hot water tank 5 disposed downstream of the heating means 4
has the same structure as the first bath 3, and is connected to the first bath 3 by a link mechanism 8 so as to be raised and lowered in synchronization with the movement of the bucket 13. Hot water at about 100° C. is circulated in the second hot water tank 5. Similarly to the first bath 3, a pipe 57 is disposed inside the bath 5.

Two pulleys 1 arranged at the terminal end of the conveying device 1
1 and 11 are provided with arc-shaped guide plates 14 that cover half of both pulleys 11 and 11.
While each bucket 13 moves around the bucket 13, grains falling from each bucket 13 are guided to the starting end of a belt conveyor 2 disposed below the conveyor 1.

There are three rollers 2 at the starting end of the belt conveyor 2.
1, 21, and 21 are arranged, and a conveyor belt 22 is wound around each roller 21. A rotating cleaning brush 23 that comes into contact with the conveyor belt 22 is disposed at this starting end. The belt conveyor 22 takes about 15 to 20 minutes to convey the shellfish to the terminal end.

On both sides of the belt conveyor 2 and the conveying device 1 above it, there are heated steam flow passages 69,
69 is formed. A plurality of steam pipes 61, 61, . . . are arranged in parallel in the vertical direction in each flow path 69, and steam at about 100 to 105° C. flows through the inside of the pipe to heat the surrounding atmosphere.
Although it is possible to heat the atmosphere by injecting steam directly downward, it is preferable to heat the atmosphere indirectly. Below the steam pipes 61 on both sides, guide plates 62, 62 for guiding the steam to the conveyance area of the belt conveyor 2 are arranged, respectively. A guide plate 63 having a V-shaped cross section and extending over almost the entire area is disposed below the belt conveyor 2 to prevent water droplets generated by cooling the water vapor from falling downward. There is. Above the guide plate 63 and below the belt conveyor 2, a plurality of fans 64 are installed.
They are arranged in parallel in the transport direction with the air blowing direction facing upward.

Note that a guide plate having a V-shaped cross section similar to the guide plate 62 is disposed between the belt conveyor 2 and the conveying device 1 over substantially the entire upper area of the belt conveyor 2. As a configuration in which a guide plate similar to the guide plate 62 described above is provided above each side,
Water droplets falling from the conveyor 1 are transferred to the belt conveyor 2.
It may be possible to prevent it from falling on top.

A third hot water tank 66 is disposed below the guide plate 63, and a plurality of steam pipes 6 extending in the conveying direction of the belt conveyor 2 are installed in the third hot water tank 66.
5, 65,... are arranged in parallel. The hot water in the hot water tank 66 is constantly heated to about 100 to 105°C by the steam flowing through each steam pipe 65. Note that it is also possible to heat the hot water by injecting steam flowing through the steam pipe 65 into the hot water. The heated steam is blown upward by each fan 64 above the guide plate 63 and heats the grains on the belt conveyor 2. All the fans 64 are rotationally driven by one motor 67 provided below the hot water tank 66 .

There is a discharge port 24 below the end of the belt conveyor 2.
is formed, and the grains conveyed on the belt conveyor 2 are discharged from the discharge port 24.

The third hot water tank 66 is not limited to the configuration installed below the belt conveyor 2, but is configured above the belt conveyor 2 to heat the grains on the belt conveyor 2 by heating the atmosphere above the belt conveyor 2. You can also use it as In the case of such a configuration, it is possible to prevent water droplets and the like from falling onto the belt conveyor 2 without providing a guide plate or the like between the belt conveyor 2 and the conveyance device.

(Function) Next, the function of the cooking device according to the present invention will be explained. Each belt 12, 12 of the conveying device 1 is
It is driven intermittently every 3 minutes, and when one bucket 13 is positioned below the hopper 7, a predetermined amount of grains such as rice is transferred to the bucket 13 by the meter 71.
It is put inside. The bucket 13 is moved intermittently every 2 to 3 minutes, and grains are sequentially thrown into the bucket 13. The bucket 13 loaded with grains is transferred and placed above the first water tank 3. 1st
The hot water tank 3 is located below while the bucket 13 is moving, and is raised and located above while the bucket 13 is stopped. There is always 50
Hot water of ~60° C. is circulated, and when the bucket 13 is positioned above the first hot water tank 3, the first hot water tank 3 is raised and the bucket 13 is immersed in the hot water. After 2 to 3 minutes have elapsed, the first bath 3 is lowered once, and the buckets 13 are transferred by one bucket. When the transfer of the buckets 13 is stopped, the hot water tank 3 is raised again, and the two buckets 13 containing the grains are immersed in the hot water in the hot water tank 3. The same operation is repeated, and one bucket 13 is heated to 50 to 60℃.
The grains in the bucket 13 are immersed in hot water for about 6 to 9 minutes, and the grains in the bucket 13 absorb water.

Next, the bucket 13 is positioned above the steam pipe 41 by intermittent movement of the belt 12, and the grains therein are heated by steam at about 100°C. Each bucket 13 is heated for three intermittent movements, ie for about 6 to 9 minutes.

A bucket 13 containing grains heated to about 100°C is positioned above the second bath 5,
In the hot water at about 100°C in the second hot water tank 5 which is raised and lowered in synchronization with the first hot water tank 3 by the link mechanism 8,
Similar to the first bath 3, the bucket 13 is soaked for about 6 to 9 minutes, and the grains in the bucket 13 are made to absorb water.

In this way, it absorbs hot water of about 50 to 60℃, and
The grains are heated with steam at a temperature of approximately 100°C and then soaked with hot water at a temperature of approximately 100°C, and are dropped downward onto a guide plate 14 while the bucket 13 moves around the outer periphery of the pulley 11 at the terminal end of the conveyor 1. It is guided and transferred to the starting end of the belt conveyor 2. Then, the grains are conveyed to the terminal end by the belt conveyor 2, and during about 10 to 20 minutes of conveyance, the second heating means 6 evaporates free water on the surface of the grains. Heating by the heating means is performed by heating the hot water in the hot water tank 66 with the steam pipe 65 to turn it into steam, and blowing the steam toward the belt conveyor 2 with the fan 66. Therefore, the grains on the belt conveyor 2 are not directly exposed to steam from the boiler. The blown-up water vapor passes through the conveyance area of the conveyance device 1, enters the flow passages 69 on both sides from above, and enters the flow passages 69 on both sides.
It is heated again by the steam pipe 61 inside, and is blown upward by the fan 66, thereby maintaining a constant temperature and circulating it. When the water vapor turns into water droplets, they fall onto the guide plate 63 and the hot water tank 66
Never fall inside.

The grains heated during conveyance by the belt conveyor 2 for about 15 to 20 minutes are discharged from a discharge port 24 formed below the terminal end of the belt conveyor 2.
As a result, delicious grains with sufficient water absorption and no gelatinized surface can be obtained.

FIG. 4 shows changes in the moisture content of rice when rice is cooked using the apparatus of the present invention. 7 pieces of rice in the first hot water tank 3
Moisture content ranges from 15% to 35% by soaking for minutes
After heating for 7 minutes by the first heating means 4, the moisture content increases to 43%. Furthermore, the second
By soaking the rice in the hot water tank 5 for 7 minutes, the moisture content of the rice increases to 63%, and by heating the rice for 12 minutes with the second heating means 6, the moisture content of the rice becomes 65%.

(Effects of the Invention) According to the present invention, since moisture of about 50 to 60°C is absorbed before heating grains,
The surface of the cooked grains does not gelatinize, resulting in delicious grains. The grains are subjected to predetermined processing while being transported by each bucket, and the grains are heated by circulating water vapor, which prevents wastage of energy. Further, according to the present invention, grains can be boiled continuously and with high efficiency. Since the structure and operation of this device are simple, there are few failures and maintenance is extremely easy. It is also possible to heat grains without directly injecting steam,
In this case, it is hygienic.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing one embodiment of the cooking device of the present invention, Fig. 2 is a cross-sectional view thereof, Fig. 3 is an explanatory diagram of the first hot water tank, and Fig. 4 is a schematic side view showing an embodiment of the cooking device of the present invention. It is a graph showing changes in the moisture content of rice during cooking. 1... Conveyance device, 2... Belt conveyor, 3...
...First water tank, 4...First heating means, 5...Second water tank, 6...Second heating means, 13...Bucket, 22...Conveyor belt, 41, 61, 6
5... Steam pipe, 64... Juan, 66...
...Tubular bath.

Claims (1)

[Scope of Claims] 1. A conveying device having a plurality of water-permeable buckets into which a predetermined amount of grain is thrown, and intermittently transporting each bucket; , a first hot water tank in which hot water at a temperature of about 50 to 60°C is circulated, descending when the bucket moves, and rising when the bucket stops moving, allowing the grains to absorb water by immersing the bucket in the hot water. a first heating means that is connected to the downstream side of the first hot water tank and heats the grains in the bucket to about 100°C; and a first heating means that is connected to the downstream side of the first heating means so that it can be raised and lowered; a second hot water tank in which hot water of about 100°C is circulated, which descends when the bucket is moving and rises when the bucket stops moving, allowing the grains to absorb water by immersing the bucket in the hot water; and the conveying device. A belt conveyor that is connected to the downstream end of the bucket and transfers the grains in the bucket, and a second heating means that heats the grains transferred to the belt conveyor during the conveyance. boiling device. 2. The grain boiling device according to claim 1, wherein the first heating means includes a steam pipe that spouts steam at about 100°C. 3 The second heating means includes a hot water tank provided below the belt conveyor, a steam pipe that heats the hot water in the hot water tank, and a fan that blows steam of about 100 to 105 degrees Celsius emitted from the hot water tank toward the belt conveyor. A grain boiling device according to claim 1, comprising: 4. The grain boiling device according to claim 1, wherein the first water tank and the second water tank move up and down in synchronization. 5. The grain boiling device according to claim 1, wherein the belt conveyor is arranged below the conveyance device.