JP3440159B2 - Automatic hydrating equipment and method for polished rice - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-containing device and a water-containing method for polishing rice which can produce ideal hydrous rice.

[0002]

2. Description of the Related Art Enterprises such as restaurants and bento shops that are engaged in rice cooking have been demanding rationalization of rice washing work, dipping work and rice cooking work and improvement of the taste of cooked rice.

The rice washing work carried out by these enterprises is a method of washing rice in a running water state (a state in which water is poured off) by the action of stirring, ultrasonic waves, bubbles, etc., and removing dust and bran by running water of overflow. However, the dipping work is a method of adjusting the dipping time according to the water temperature and the outside air temperature based on empirical numerical values, but none of these have reached the level of automation.

However, in the conventional rice washing operation, the amount of tap water used for washing rice is removed by the action of stirring, ultrasonic waves, air bubbles, etc., under running water conditions (flowing water away) by the overflowing running water. In addition, since the rice is soaked from the beginning to the end of washing, the rice actually absorbs a large amount of water containing many bran components that deteriorate the taste.

Further, in the conventional dipping method, the dipping time is adjusted by empirical values according to the water temperature and the outside air temperature. But,
In winter when the outside temperature is low, soaking is performed for a long time (2 hours), but the low water temperature has a low soaking effect that the moisture content of rice cannot be increased to a saturated state, and soaking for a long time makes the surface of white rice It causes the dissolution of the starch component of and causes deterioration of taste. Also, although the rice is soaked for a short time in the summer when the temperature is high, since the rice itself is harvested and stored for a long period of time to become old rice, the water content of the rice itself is low and it is necessary to improve the water content to a saturated state. I can't.

[0006]

Therefore, the object of the present invention is to reduce the amount of tap water used for washing rice, to prevent deterioration of rice taste during washing, to saturate the moisture content of rice within a certain time without being affected by the external environment. Conditioning, prevention of elution of tasting elements into the immersion water by heating soaking, shortening the cooking time for cooking rice by homogenizing the moisture content of each grain of rice by heating soaking and automatic self-cleaning function at the end of work The point is to provide an automatic water-containing device for polished rice, and more specifically, an automatic water-containing device for circulating bubble convection hot water with a bubble-washing function.

[0007]

[Means for Solving the Problems] The basic idea of the present invention is (a) a soaking tank, (b) a rice storage basket provided in the immersion tank, and (c) shaking the rice in the rice storage basket. Means to move,
The present invention relates to an automatic water-containing device for rice polishing comprising (d) means for flowing hot water in a dipping tank and (e) means for maintaining hot water in the dipping tank at a constant temperature.

The means for flowing the hot water in the immersion tank of (d) above is such that the hot water is taken out from one of the immersion tanks of (a) above.
It can be performed by supplying hot water from the other side.

The means (e) for maintaining the hot water in the immersion tank at a constant temperature can be achieved by additionally providing a heating means for compensating the energy release of the hot water in the immersion tank.

The first aspect of the present invention is as follows. That is, (a) an immersion tank, (b) a rice storage basket provided in the immersion tank, (c) means for rocking the rice in the rice storage basket,
(G) hot water tank, (h) means for circulating hot water between the immersion tank and the hot water tank, (i) heating means for making the water temperature in the hot water tank a predetermined temperature, (j) water temperature in the immersion tank Is an automatic water-containing device for rice polishing, which comprises a control means for keeping the rice at a predetermined temperature.

In these water-containing devices, a drainage means that allows overflow can be attached to the upper region of the immersion tank.

It is preferable that the rocking means (c) is a bubble releasing member provided in the immersion tank of (a) and below the rice storage basket of (b).

It is preferable that the rocking means (c) mentioned above causes the rice and the rice to collide with each other in the washing step to create the same situation as when the rice is washed off. Since it gradually absorbs water from the layer and the rice becomes soft, it is not preferable to give rocking such that the rice and the rice collide with each other. It is hoped that it will act as if to help. For that purpose, it is preferable to gently and uniformly supply air bubbles as fine as possible from below the rice storage basket.

As one means therefor, it is preferable to provide a control valve between the gas compressor and the gas discharge member so that the gas supply amount in the rice washing process and the water-containing process can be changed.

In the means (h) for circulating hot water between the immersion tank and the hot water tank, the hot water is supplied from the hot water tank to the immersion tank from above the rice storage basket, and the hot water is extracted from the immersion tank. Is preferably performed from below the dipping tank.

In the second aspect of the present invention, warm water is poured into the washed rice in the basket for storing rice in the dipping tank, while the grains of the polished rice in the basket for storing rice do not substantially collide with each other. A method of allowing water to be hydrated essentially uniformly by swaying so as to uniformly contact with warm water,
In addition, the temperature of the hot water is a temperature between 45 and 60 ° C. The present invention relates to a method for hydrous rice polishing.

A third aspect of the present invention is to wash the milled rice with water while rocking the milled rice so that the grains of the milled rice contained in the rice storage basket in the dipping tank collide with each other. The present invention relates to a water-containing method for polished rice, which is characterized by carrying out the method.

That is, the third aspect of the present invention is to substantially carry out the rice washing step and the water-containing step using the apparatus of the present invention.

[0019]

Embodiments of the present invention will be described in detail with reference to the drawings, but the present invention is not limited thereto.

Example 1 This example was carried out using the water-containing device shown in FIG. The rice cleaning operation is performed according to the flow sheet shown in Fig. 2 by putting the polished rice into the rice storage basket made from the stainless steel net in the amount of 8 minutes or less.

Using the apparatus shown in FIG. 1, rice washing operation is performed according to the flow sheets shown in FIGS. First, the electromagnetic valve SV-13 is opened to supply water to the warm water tank 8.
When the warm water tank 8 has reached the predetermined water level, the warm water tank water level sensor 1
When it is detected in 5, the system is such that the electromagnetic valve SV-13 is closed. When water accumulates in the warm water tank 8, the electromagnetic valve SV-4 is opened, and the immersion tank 1 is pumped by the pump 14.
Water is supplied to 0 from the spout. Immersion tank water level sensor 16
When it detects that the water level has reached a predetermined level, the electromagnetic valve SV
-4 and pump 14 stop. If the computer is instructed to wash the rice n = 6, the electromagnetic valve SV-9
Is opened and the air compressor 2 is operated, and air is supplied from the air intake 1 with an air cleaning filter for a predetermined time by timer control. The air is supplied to the air discharge head 12 having a large number of fine holes provided on the entire lower surface of the rice storage basket 11, and a large number of fine air bubbles are generated, and this pressure causes the rice millers in the rice storage basket 11 to collide with each other. Wash rice. The first rice washing operation should be about 10 to 15 seconds if possible, and the computer should be instructed to drain water quickly. Therefore, after a lapse of a predetermined time, the air compressor 2 is stopped, the electromagnetic valve SV-9 is closed, and on the other hand, the electromagnetic valve SV-2 is opened to drain the water. When the immersion tank water level sensor 16 detects the completion of drainage, the computer instructs the second rice washing operation.
On the other hand, the warm water tank 8 which supplied water to the submerged layer 10 to reduce water,
The electromagnetic valve SV-13 is opened immediately after the electromagnetic valve SV-4 is closed so that the water used for the second rice washing can be quickly supplied to the submerged layer 10 until the warm water tank water level sensor 15 detects a predetermined water level. Water is supplied to the warm water tank 8.

In the second and third rice washing operations, the electromagnetic valve SV-2 is closed and the same rice washing operation as in the first rice washing operation is repeated. That is, the electromagnetic valve SV-4 is opened and the pump 1
4 is operated, water is supplied to the immersion tank 10, and when the immersion tank water level sensor 16 detects that the predetermined water level has been reached, the electromagnetic valve SV-4 is closed, the pump 14 is stopped, and the electromagnetic valve SV-9 is turned on. After opening, the air compressor 2 is operated to generate fine bubbles from the air discharge head 12, and the second rice washing is performed. After 20 to 30 seconds have passed, the electromagnetic valve SV-9 is closed, the air compressor 2 is stopped, and the electromagnetic valve SV-2 is opened to drain the water. Electromagnetic valve S is used for the fourth to sixth washing operations.
V-2 is closed and the same rice washing operation as the first time is repeated.
However, after stopping the pump 14, the electromagnetic valve SV-
9. The electromagnetic valve SV-10 is opened, and the air compressor 2 is operated to cause the air discharge head 12 to generate fine bubbles larger than the first to third air amounts.

In this way, the rice is washed a predetermined number of times. If necessary, the electromagnetic valve SV-10 provided in parallel with the electromagnetic valve SV-9 can arbitrarily control the amount of air discharged from the air discharge head 12 by the individually provided flow rate adjusting valves.

Next, with respect to the product after washing the rice, as shown in FIG.
Perform water-containing operation according to the flow sheet shown in. The electromagnetic valve SV-13 is opened to supply water to the hot water tank 8, and at the same time the electromagnetic valve SV-4 is opened to supply water to the immersion tank 10 by the pump 14. When the hot water tank water level sensor 15 and the immersion tank water level sensor 16 both detect that the hot water tank 8 and the immersion tank 10 are full, the immersion tank temperature sensor 13 is activated, and the electric heater 7 is thereby activated. At the same time, the electromagnetic valve SV-4 is closed, the pump 14 is stopped, and the electromagnetic valve SV-13 is closed. On the other hand, the electromagnetic valve SV-1,
The SV-12 opens, the pump 3 operates, and the water in the immersion tank 10 passes through the heat exchanger 5 in the hot water tank 8 and returns to the immersion tank 10 from the upper watering head 9. As a result, the temperature in the immersion tank 10 quickly reaches the predetermined temperature (50 ° C.). Immersion bath temperature sensor 13 indicates that the temperature has reached a prescribed temperature (50 ° C)
When it detects, the circuit of the electric heater 7 is turned off, and the switch is turned on when the predetermined temperature falls below 50 ° C. On the other hand, when the water level in the warm water tank 8 is full, the electromagnetic valve SV-11 is opened and the air compressor 2 is operated to generate fine bubbles from the air discharge head 12. The degree of foaming is preferably such that hot water evenly contacts the polished rice grains in the rice storage basket 11, but the water-containing layer on the surface of the polished rice is not destroyed by collision of the polished rice grains. Therefore, the electromagnetic valve for washing rice SV-
9. The SV-10 and the water-containing electromagnetic valve SV-11 are adjusted so that the amount of air passing therethrough matches their respective purposes.

When the water-containing treatment time of a predetermined time (for example, 20 minutes) is completed, the timer operates to stop the pump 3 and the air compressor 2 and close the electromagnetic valve SV-11. Then,
The electromagnetic valves SV-2, SV-3, SV-6, SV-8 are opened to drain water.

After the water-containing operation is completed, the rice storage basket 11 is taken out and the apparatus is washed with water according to the flow sheets shown in FIGS. Open the solenoid valve SV-13, supply water until the warm water tank 8 is full, and when full, fill the solenoid valve SV
-2, SV-5, SV-12 are opened, the pump 14 is operated, and when the warm water tank water level sensor 15 detects a decrease in water, the pump 14 is stopped. Repeat this any number of times as needed. Thus, the immersion tank 10 is cleaned. Next,
The heat exchanger 5, the upper sprinkling head 9 and the circulation pump 3 are washed. The electromagnetic valve SV-13 is opened, water is supplied until the warm water tank 8 is full, and when full, the electromagnetic valve SV-4 is opened, the pump 14 is operated, and the immersion tank water level sensor 16
When detects full water, the electromagnetic valve SV-4 is closed and the pump 14 is stopped. Electromagnetic valves SV-1, SV-6, S
V-9, SV-10 and SV-11 are opened to operate the pump 3 and the air compressor 2 to clean the apparatus with water and bubbles. The water is drained without being circulated. The timer works to stop the pump 3 and the air compressor 2, and the electromagnetic valve SV-
1, SV-6, SV-9, SV-10, SV-11 are closed. Repeat this as needed.

Finally, the electromagnetic valves SV-2, SV-3,
The SV-6 and SV-7 are opened, the air compressor 2 is operated, and the water in the pipe is drained.

Regarding the milled rice that has been subjected to the above-mentioned rice washing process, the soaking time is 20 minutes, but the soaking temperature is 30 ° C., 4
It carried out about 4 cases which changed to 0 degreeC, 50 degreeC, and 60 degreeC, 580cc of water was added to each 572g of each hydrous rice obtained, and rice was cooked on normal conditions.

The rice thus obtained was evaluated by 5 panelists. The results are shown in Table 1.

[0030]

[Table 1] (Note) Gloss: The strength of "Tekari" on the surface of white rice is indicated in the order of ◯, △, ×. Stickiness: The strength of stickiness when squeezed is shown in the order of ◯, Δ, and ×. Color: The stagnation of white is shown in the order of ◯, Δ, and ×. Odor: Appropriateness of rice odor (× even if it is too strong) is indicated in the order of ◯, Δ, and ×. Hardness: The degree of chewyness is indicated in the order of ○, △, ×. Taste: The sweetness intensity of rice is indicated in the order of ◯, Δ, and ×.

The embodiments of the present invention are listed below. 1. (A) a soaking tank, (b) a rice storage basket provided in the immersion tank, (c) means for rocking the rice in the rice storage basket,
(D) A means for flowing hot water in the dipping tank, and (e) means for keeping the hot water in the dipping tank at a constant temperature. 2. The automatic water-containing device for polished rice according to the preceding item 1, wherein the means for flowing hot water in the immersion tank of (d) is performed by taking hot water from one of the immersion tanks of (a) and supplying hot water from the other. . 3. 3. The automatic water-containing apparatus for polished rice according to the above 1 or 2, wherein the means for maintaining the hot water in the immersion tank at (e) at a constant temperature is provided with a heating means for compensating the energy release of the hot water in the immersion tank. 4. (A) a soaking tank, (b) a rice storage basket provided in the immersion tank, (c) means for rocking the rice in the rice storage basket,
(G) hot water tank, (h) means for circulating hot water between the immersion tank and the hot water tank, (i) heating means for bringing the water temperature in the hot water tank to a predetermined temperature, (j) water temperature in the immersion tank An automatic water-retaining device for rice polishing, which comprises a control means for keeping the rice at a predetermined temperature. 5. 5. The automatic water-containing device for polished rice according to item 4, wherein a water outlet is provided in the upper region of the immersion tank of (a). 6. 6. The automatic water-containing apparatus for polished rice according to the above 4 or 5, wherein the swinging means of (c) is a bubble discharging member provided in the immersion tank of (a) below the rice storage basket of (b). . 7. 7. The automatic water-containing device for polished rice according to item 6 above, wherein a gas flow control means is attached to the bubble discharging member. 8. In the means (h) for circulating hot water between the immersion tank and the hot water tank, the hot water is supplied from the hot water tank to the immersion tank from above the rice storage basket, and the hot water is extracted from the immersion tank. The above items 4, 5, and 6 are performed from below.
Or an automatic water-containing device for polished rice according to 7. 9. The above-mentioned 1, 2, 3, 4, wherein a hot water temperature control sensor is provided in both the immersion tank of (a) and the hot water tank of (g).
5. An automatic water-containing device for polished rice according to 5, 6, 7 or 8. 10. 10. The automatic water-containing device for polished rice according to the above item 1, 2, 3, 4, 5, 6, 7, 8 or 9, wherein a water level sensor is provided in the immersion tank of (a). 11. 11. The automatic water-containing device for polished rice according to the above item 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10, wherein a water level sensor is provided in the warm water tank of the above item (g). 12. Warm water is poured onto the washed rice that has been placed in the rice storage basket in the dipping tank, while each grain of the polished rice in the storage basket is shaken so that it does not collide with each other and contacts the hot water substantially evenly. The method is to make each of the polished rice grains to have an essentially uniform water content by moving, and the temperature of the hot water is 4
A method for hydrating rice, characterized in that the temperature is between 5 and 60 ° C. 13. It is characterized in that the polished rice is washed with water while rocking so that the individual grains of the rice contained in the rice storage basket in the dipping tank hit each other, and after the cleaning is completed, the method described in 12 above is carried out. Method of hydrating polished rice. 14. The water temperature when washing with the water is room temperature
3. The method of hydrating the polished rice according to 3. 15. The rocking of the milled rice is caused by raising a large number of fine bubbles from the bottom of the rice storage basket.
The water-containing method according to 2, 13, or 14. 16. The strength of the supply of air bubbles is such that it can be seen with the naked eye that the milled rice is dripping when washing the rice, and when the water content of the milled rice is such that the milled rice is not dripping with the naked eye, .

[0032]

[Effect] According to the present invention, it has become possible to automate the rice washing process and the water-containing process of rice polishing, which has not been automated at all until now. The water-containing rice obtained by the present invention has a temperature of minus 25 to minus 35 ° C., especially minus 30.
When frozen and stored at ℃ or cooked rice immediately, the cooking time can be shortened by 30 to 40% as compared with the water-polished rice obtained by the conventional method.

[Brief description of drawings]

FIG. 1 is a schematic view of a water-containing device according to an embodiment of the present invention.

FIG. 2 shows a front stage of a flow sheet of a rice washing process of the present invention.

FIG. 3 shows a latter stage of a flow sheet of the rice washing process of the present invention.

FIG. 4 shows a flow sheet of the water-containing step of the present invention.

5 shows a front stage of a flow sheet of a cleaning process after using the apparatus of FIG.

6 shows a latter stage of a flow sheet of a cleaning process after using the apparatus of FIG.

[Explanation of symbols]

1 Air intake with air cleaning filter 2 air compressor 3 circulation pumps 4 Temperature control switch 5 heat exchanger 6 Hot water tank temperature control sensor 7 Electric heater 8 hot water tank 9 Upper sprinkling head 10 immersion tank 11 rice storage basket (sus net) 12 Air release head 13 Immersion bath temperature control sensor 14 Washing rice, pump for washing 15 Hot water tank water level sensor 16 Immersion tank water level sensor

Claims (7)

(57) [Claims] 1. (a) Immersion tank, (b) rice storage basket provided in the immersion tank, (c) means for rocking rice in the rice storage basket, (g) hot water tank, (h) Means for circulating hot water between the immersion tank and the hot water tank, (i) heating means for bringing the water temperature in the hot water tank to a predetermined temperature, and (j) control for maintaining the water temperature in the immersion tank at the predetermined temperature An automatic water-containing device for rice polishing, which is characterized by comprising means. 2. The automatic water-containing device for polished rice according to claim 1, wherein a water outlet is provided in the upper region of the immersion tank of (a). 3. The bubble releasing member provided in the dipping tank of (a) and below the rice storage basket of (b), wherein the swinging means of (c) is a bubble releasing member. Automatic water hydration device. 4. The automatic water-containing device for polished rice according to claim 3, wherein a bubble flow control means is attached to the bubble discharge member or the preceding stage thereof. 5. The means for circulating hot water between the immersion tank and the hot water tank of (h), wherein the hot water is supplied from the hot water tank to the immersion tank from above the rice storage basket, and the hot water from the immersion tank is supplied. The automatic water-containing device for polished rice according to claim 1, 2, 3 or 4, wherein the removal of the rice is performed from below the dipping tank. 6. The warmed water is poured into the washed rice in the rice storage basket in the dipping tank, while the grains in the rice storage basket do not collide with each other and are substantially uniformly heated. A method for making each grain of rice essentially water-hydrated by rocking so as to be in contact, wherein the temperature of the hot water is between 45 and 60 ° C. Method of hydration. 7. The method according to claim 6, wherein the milled rice is washed with water while rocking to such an extent that the grains of the milled rice contained in the rice storage basket in the dipping tank collide with each other, and after the washing is completed. A water-containing method for polishing rice, which is characterized by being carried out.