KR101121445B1 - Quick Refrigeration Apparatus for Apparatus Manufacturing Frozen Rice - Google Patents

Abstract

The present invention relates to a rapid freezing device of the frozen rice manufacturing apparatus, a transfer conveyor for continuously supplying the aggregated grains; And a refrigerator having a plurality of freezing rooms installed on the conveying conveyor to freeze the grains continuously supplied, wherein the internal temperatures of the plurality of freezing rooms are sequentially lowered according to the direction of the grains. Characteristically, when the grains pass through a plurality of freezing rooms and are sequentially frozen than frozen in one conventional freezing room, heat transfer occurs in a state where the temperature difference between the grains and the freezing room is small, so that the production of entropy is reduced by the law of thermodynamics 2. It can be frozen efficiently.

In addition, the conveying conveyor further includes a condensation removing means to effectively remove the condensation generated in the conveying conveyor, thereby having an effect of preventing failure and malfunction of the conveying conveyor.

Frozen grain, freezer, condensation, frozen rice

Description

Quick Refrigeration Apparatus for Frozen Rice Production Equipment {Quick Refrigeration Apparatus for Apparatus Manufacturing Frozen Rice}

The present invention relates to a refrigerating device, and more particularly, to a rapid freezing device for rapidly freezing grains that have been transferred through a conveying conveyor in a frozen rice manufacturing process.

Generally, frozen rice manufacturing process consists of immersion process → cooking process → freezing process → packing fixing.

The freezing step is a step of freezing the rice while transferring on a conveying conveyor.

Conventionally, the freezing is performed at an internal temperature of -40 ° C. in one refrigerator, and the difference in temperature between the initial rice temperature and the freezer in the refrigerator is large, so that irreversibility is increased due to the second law of thermodynamics. .

In the freezing process, moisture in the air condenses as the temperature decreases, becomes ice, and binds on the conveying conveyor.

If ice is bound to the transport conveyor, there is a problem that causes malfunction and failure of the transport conveyor.

An object of the present invention for solving the above problems, a rapid freezing device of the frozen rice production apparatus improved refrigeration efficiency, including a plurality of refrigeration room in which the internal temperature is sequentially lowered in the moving direction of the transfer conveyor, and transported during freezing It is to provide a rapid freezing device of the frozen rice manufacturing apparatus including a condensation removing means that can remove the condensation generated on the conveyor.

Rapid frozen device of the frozen rice manufacturing apparatus of the present invention for achieving the above object, the conveying conveyor for continuously supplying the aggregated grains; And a refrigerator having a plurality of freezing rooms installed on the conveying conveyor to freeze the grains continuously supplied, wherein the internal temperatures of the plurality of freezing rooms are sequentially lowered according to the direction of the grains. It features.

Here, the conveying conveyor is characterized in that it has a mesh structure.

The refrigerator includes a first freezing room for maintaining an internal temperature set to a first temperature; A second freezing room installed adjacent to the first freezing room in a traveling direction of the grain to maintain an internal temperature set to a second temperature; And a third freezer installed in the second freezing room in the advancing direction of the grain to maintain an internal temperature set to a third temperature.

The first temperature is -15 ° C to -20 ° C, the second temperature is -25 ° C to -30 ° C, and the third temperature is -35 ° C to -40 ° C.

In addition, the conveying conveyor may further include a condensation removing means for removing condensation generated in the conveying conveyor.

The condensation removing means is located on the lower side of the conveying conveyor immersion unit is immersed while the conveying conveyor is in progress; And a drying unit installed in the immersion unit in the advancing direction of the transfer conveyor to dry the transfer conveyor by injecting air to the transfer conveyor.

And, the immersion unit is the upper side is opened and the housing for storing hot water; And a heat supply unit coupled to the housing to supply heat to the housing.

And, the immersion unit is the upper side is opened and the housing for storing hot water; A hot water supply pipe installed at one end of the housing to supply hot water to the housing; Is installed at one end of the housing includes a hot water discharge pipe for discharging the hot water of the housing.

On the other hand, the drying unit is a compressor for compressing air; And an air injection nozzle in communication with the compressor and injecting compressed air compressed by the compressor to the transfer conveyor.

In addition, the drying unit may be characterized in that the hot air drying method.

According to the rapid freezing device of the frozen rice manufacturing apparatus of the present invention, comprising a refrigerator having a plurality of freezing rooms sequentially lowered in accordance with the progress direction of grain on the conveying conveyor, in a conventional freezing room Rather than freezing, when grains are frozen through multiple freezing rooms sequentially, heat transfer occurs in a state where the temperature difference between the grains and freezing rooms is small, so that the production of entropy is reduced by the law of thermodynamics 2 and thus can be efficiently frozen.

Therefore, the refrigeration efficiency is increased, the energy consumption can be reduced, and the production cost can be reduced.

 In addition, the conveying conveyor includes a condensation removing means, so that the conveying conveyor is immersed in hot water by the immersion part, and dried by air by the drying part effectively removes the condensation generated in the conveying conveyor, which causes malfunction and malfunction of the conveying conveyor. Has the effect of preventing.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

1 is a flow chart illustrating a frozen rice manufacturing process of the present invention, Figure 2 is a schematic view showing a frozen rice manufacturing system according to an embodiment of the present invention, Figure 3a is a schematic front view of the separator of Figure 2 3B is a schematic plan view of the separator of FIG. 2, FIG. 4 is a schematic view illustrating the rapid freezing apparatus of FIG. 2, and FIG. 5 is a front view illustrating the partition of FIG. 4.

The present invention can be applied to frozen foods of cereals such as frozen rice, frozen cereal rice and the like. In the following examples, the frozen rice will be described as an example.

Of course, the present invention can be used in other frozen foods in addition to cereals.

Rapid freezing device of the frozen rice manufacturing apparatus of the present invention is used in the frozen rice manufacturing process, the frozen rice manufacturing process may be configured as shown in FIG.

First, after washing the selected raw rice water, the water soaking step (S10) to immerse to absorb water uniformly, and the cooking process (S20) for cooking rice by applying heat to the soaked raw rice, and the cooked rice each other It comprises a separation step (S30) for separating not to bind, and a freezing step (S40) for freezing the separated rice in a predetermined unit.

Of course, a packaging process (S50) for packaging the frozen frozen rice may be further included.

The immersion step (S10) is a process called by immersing the raw rice in water for a predetermined time before cooking. At this time, the immersion temperature and immersion time is important, the immersion temperature is 30 ℃ or less, the immersion time is preferably adjusted to 0.2 to 12 hours depending on the immersion temperature.

The cooking step (S20) is a step of cooking rice by applying heat to the soaked raw rice. It can be done by manpower or by machine.

The separation step (S30) is to separate the rice grains from each other in order to prevent the separation because the rice grains are bound to each other using a roll brush or the like.

The separation step (S30) is because the rice surface is very viscous due to the gelatinization of the rice starch is attached to each other, which causes the rice grains to bind to each other during freezing, as well as the freezing efficiency is reduced, as well as forming rice lumps during cooking This is because deterioration of the cooking characteristics such as prolongation of cooking time and deterioration of food taste occurs, and the taste of rice also deteriorates.

At this time, it is important in terms of texture and taste of the rice after thawing so that the rice grains are not crushed while being separated.

Then, the separation step (S30) is separated from each other rice using a roll brush and compressed air to be conveyed by the conveying conveyor. Or a vibrator can also be used.

Injection of the compressed air may be made by an air injection nozzle and a compressor.

At this time, the rice cooked in the separation step (S30) can be input by the manpower or by a mechanical device.

The separation step (S30) may be repeated two or more times in consideration of the separation of the rice grains.

The freezing step (S40) is the rice after the separation process is conveyed by agglomerate unit in a certain lump unit through a conveying conveyor, it is rapidly frozen in the freezer.

In this case, a refrigerator having a plurality of freezing rooms is used to increase the freezing efficiency, and may further include condensation removing means for removing condensation of the conveying conveyor.

The condensation removing means is to immerse the conveying conveyor in hot water, and then to dry the conveying conveyor.

The packaging step (S50) is a step of packaging the frozen rice frozen in the freezing process using a wrapping paper. Of course, the packaging process (S50) may be made by manpower, it is also possible to automatically packaging by placing a sorting machine according to the weight.

Frozen rice manufacturing system for implementing the frozen rice production as described above is shown in FIG.

The frozen rice manufacturing system includes a rapid freezing device 200 of the separating unit 100 and the frozen rice manufacturing device, the rapid freezing device 200 of the frozen rice manufacturing device corresponds to an embodiment of the present invention.

In addition, the packaging unit 500 for the next process or product packaging of the product frozen through the rapid freezer 200 of the frozen rice manufacturing apparatus may be further installed.

In addition, an automatic cooking apparatus (not shown) may be further installed before the separating unit 100.

The frozen rice manufacturing system moves in a state in which the conveying conveyor (101,201) arranged above the rice 10 over the separation unit 100 and the rapid freezing device 200 of the frozen rice manufacturing apparatus.

The separator 100 is as shown in FIGS. 3A and 3B.

The separating part 100 includes a conveying conveyor 101, a roll brush 110, and an air spraying part.

In addition, the separation unit 100 may further include an input unit 90 for inputting the rice 10. In addition, the input of the rice 10 can also be by manpower.

When the rice 10 aggregated in the separating part 100 is supplied in a state arranged on the transfer conveyor 101, the rice 10 is primarily separated by the roll brush 110.

The roll brush 110 may be adjusted by the lifting cylinder 120 and the distance to the conveying conveyor 101.

The air injection unit is installed in the advancing direction of the conveying conveyor 101 of the roll brush 110 to inject compressed air to the rice 10 passed through the roll brush 110 to separate the rice.

In addition, the air injection unit communicates with the compressors 141, 142, 143 compressing air, the air supply pipes 131, 132, 133 communicating with the compressors 141, 142, 143, and the compressed air, and the air supply pipes 131, 132, 133 which inject the compressed air. It may include an air spray nozzle 150.

The plurality of air spray nozzles 150 are arranged in various numbers according to the separation degree of the rice 10, it is possible to adjust the air spray pressure. The injection angle is preferably inclined in the reverse direction of the traveling direction of the transfer conveyor 101 to improve the separation efficiency.

The air injection nozzle 150 may be arranged in a plurality of rows in the vertical direction of the traveling direction of the transfer conveyor 101.

In this embodiment, they can be arranged in three rows as shown in Fig. 3B.

At this time, the air supply pipes (131, 132, 133) are installed in the vertical direction of the traveling direction of the conveying conveyor 101, the plurality of air injection nozzles 150 has a predetermined pitch in the air supply pipes (131, 132, 133) Is installed.

The plurality of air injection nozzles 150 may be injected from the upper side to the lower side, and may also be injected in the reverse direction of the traveling direction of the transfer conveyor 101.

In addition, the plurality of air injection nozzles 150 may be characterized in that the swing.

That is, the plurality of air spray nozzles 150 is advantageous in the separation of the upper bob 10, the swing in the direction perpendicular to the traveling direction of the conveying conveyor (101).

In addition, it is preferable that the air spray nozzles 150 adjacent to each other in the same row swing in opposite directions.

In addition, when the plurality of air spray nozzles 150 are disposed, they may be alternately alternately installed so that their positions are different along the traveling direction of the transfer conveyor 101. Therefore, it is possible to spray compressed air evenly over the entire conveying conveyor 101.

One end of the air supply pipe (131, 132, 133) may further include an actuator (161, 162, 163) for vibrating the air supply pipe (131, 132, 133).

There is no limitation on the operation of the actuators (161, 162, 163), it can be operated by a hydraulic or pneumatic method.

Actuators 161, 162, 163 are connected to the air supply pipes 131, 132, 133 so that the air supply pipes 131, 132, 133 vibrate, and thus, a plurality of air spray nozzles 150 communicating with the air supply pipes 131, 132, 133 vibrate.

Thus, the separation efficiency of the rice is improved.

At this time, the air supply pipe (131, 132, 133) may be vibrated in the opposite direction to the adjacent air supply pipe to improve the separation efficiency of the rice.

In addition, the air injection nozzle 150 may be sprayed with a given pulse to improve the separation efficiency of the rice (10).

Therefore, by using the air injector as described above it is less rice crushed than using the roll brush several times it is possible to deliver the texture of fresh rice to the consumer after the frozen rice thawed.

In addition, the air injection unit may further include a cooling unit (171, 172, 173).

The cooling units (171, 172, 173) is preferably connected to the air supply pipe (131, 132, 133).

The operation of the cooling unit (171, 172, 173) may be a variety of methods, such as steam compression, absorption.

Compressed air is injected by the air spray nozzle 150 to separate the rice 10 and to cool.

Therefore, when the temperature of the compressed air is lowered while separating the rice 10 by compressed air, pre-cooling may be performed before the rice 10 is transferred to the freezing process, thereby reducing the freezing time in the freezing process and improving the freezing efficiency. It has a synergistic effect.

At this time, both ends of the conveying conveyor 101 may be further provided with a scattering prevention plate 114 for preventing the scattering of the rice 10 due to the compressed air injection of the air injection unit.

In addition, the transfer conveyor 101 may be further provided with a plurality of vibrators (105.106.107.108) for vibrating the transfer conveyor 101.

The number of the vibrators 105.106.107.108 may be adjusted according to the separation degree of the rice 10.

Separation efficiency of the rice 10 can be improved by the plurality of vibrators (105.106.107.108).

And, on the conveying conveyor 101, a camera 180 that can monitor the separation degree of the rice 10 may be further installed.

Monitoring the separation of the rice 10 by the camera 180 may be carried out by selecting the next step or separation process.

Rapid freezing device 200 of the frozen rice manufacturing apparatus is as shown in Figures 4 to 7.

Referring to Figures 4 to 7, the refrigeration apparatus 200 of the frozen rice manufacturing apparatus, the freezer is installed on the conveying conveyor 201 is formed.

The present invention can be used for rice, grain rice and other grains, but this embodiment will be described with respect to rice.

The transfer conveyor 201 continuously supplies the aggregated grains.

Hereinafter, the present invention will be described based on rice, which is a kind of grain.

The conveying conveyor 201 continuously feeds the rice 10, which has been gathered as shown in FIG. 4, to the freezer, and transfers the rice 10 frozen in the freezer to the packaging unit 500 or another process. .

Then, the conveying conveyor 201 is rotated by the drive roller 202 and the driven roller 203.

In addition, the conveying conveyor 201 is a conveying conveyor support (204, 205) is provided between the drive roller 202 and the driven roller 203 is supported by the conveying conveyor (201).

Of course, the transport conveyor 201 may be supported by a plurality of frames (not shown).

In addition, the conveying conveyor 201 may be used a common mesh conveyor belt.

The freezer has a plurality of freezing rooms for freezing the rice 10 is continuously provided on the transfer conveyor 201.

The plurality of freezing rooms are partitioned by partitions 211 and 221.

The partitions 211 and 221 are preferably used to block the heat transfer between the plurality of refrigeration room is used.

The partitions 211 and 221 may further include holes 212 and 213 for passing the transfer conveyor 201.

The holes 212 and 213 should be formed in consideration of the width and thickness of the transfer conveyor 201, and are formed in consideration of the rice 10 arranged in the transfer conveyor 201.

There is no limitation on the operation of the refrigerator, and various methods such as general vapor compression or absorption may be applied.

In addition, the internal temperature of each of the plurality of freezing rooms is characterized in that it is sequentially lowered according to the progress direction of the grain.

In other words, a plurality of freezing rooms are installed in the traveling direction of the conveying conveyor 201, and the temperatures inside the plurality of freezing rooms are sequentially lowered along the moving direction of the grain, so that they are arranged in the conveying conveyor 201. The rice 10 is frozen while passing through a plurality of freezers.

Conventionally, since the internal temperature is frozen to -40 ° C. in one refrigerator, the temperature difference between the initial temperature of the rice and the freezer is large, and thus the refrigeration efficiency is not good because the irreversibility increases due to heat transfer.

As described above, when the rice 10 is sequentially frozen while passing through a plurality of freezing rooms, heat transfer occurs in a state where the temperature difference between the rice and the freezing room is small and thus can be efficiently frozen.

Therefore, the refrigeration efficiency is increased, the energy consumption can be reduced, and the production cost can be reduced.

In addition, there is no limitation on the number of freezing rooms that the freezer has, and the temperature difference of each freezing room is not limited as long as the temperatures of the plurality of freezing rooms are sequentially lowered according to the progress direction of the grain.

However, as the number of freezing rooms of the freezer increases, the temperature difference with the rice 10 can be reduced, so that heat transfer can be efficiently performed. .

That is, the freezer may include a first freezing room 210, a second freezing room 220, and a third freezing room 230.

The plurality of freezing rooms are supplied with energy by a plurality of freezing units (213, 223, 232) and the internal temperature is controlled.

The control unit 240 may be connected to the refrigerating units 213, 223, and 232 to adjust temperatures in the plurality of freezing rooms.

At this time, the plurality of freezing rooms are attached to the temperature measuring sensors (212, 222, 231), respectively, when the control unit 240 controls the internal temperature of the plurality of freezing rooms by the temperature measuring sensors (212, 222, 231) The temperature of the controller is transmitted to the controller 240.

Therefore, the internal temperature of the plurality of freezing rooms is effectively maintained at the set internal temperature.

Here, the first freezing room 210 maintains the internal temperature set to the first temperature. The first temperature is preferably maintained at -15 ° C to -20 ° C.

Here, the second freezing room 220 is installed adjacent to the first freezing room 210 in the advancing direction of the grain to maintain the internal temperature set to the second temperature. The second temperature is preferably maintained at -25 ° C to -30 ° C.

Here, the third freezing room 230 is installed adjacent to the second freezing room 220 in the advancing direction of the grain to maintain the internal temperature set to the third temperature. And the third temperature is preferably -35 ℃ to -40 ℃.

Therefore, it is advantageous in view of the refrigeration efficiency, freezing time, space constraint that the refrigerator has three freezing rooms and maintains the above temperature as described above.

6 and 7 show another embodiment of the rapid freezing device of the frozen rice manufacturing apparatus of the present invention.

6 and 7, the rapid freezing device of the frozen rice manufacturing apparatus of the present embodiment further comprises a condensation removing means.

The condensation removing means is for removing condensation generated in the transfer conveyor 201 and includes an immersion part 300 and a drying part.

 When the conveying conveyor 201 passes through the freezer, moisture in the air becomes ice and is attached to the conveying conveyor 201 to hinder the operation of the conveying conveyor 201.

The immersion unit 300 for removing the ice is located in the lower side of the conveying conveyor 201 as shown in Figure 6 is the place where the conveying conveyor 201 is immersed.

The immersion unit 300 includes a housing 310, a hot water supply pipe 320, and a hot water discharge pipe 330 as shown in FIG. 7.

The shape of the housing 310 is not limited, the upper side is open, or has a groove through which the conveying conveyor 201 can pass. And the housing 310 is filled with a predetermined amount of hot water.

At this time, the transfer conveyor 201 is immersed in hot water filled in the housing 310.

It is preferable to be immersed in the lower side of the conveying conveyor 201, and the tension of the conveying conveyor 201 may be weakly given, and it may be immersed in hot water by natural sag.

As shown in FIG. 6, the conveying conveyor 201 has a constant angle and height adjusted by the tension rollers 206 and 207 and the idle rollers 208 and 209.

As described above, the tension rollers 206 and 207 and the idle rollers 208 and 209 can be immersed in the hot water of the housing 310 reliably, and the immersion time can also be adjusted.

Therefore, the dew condensation of the transfer conveyor 201 is melted while immersed in the hot water of the housing 310 for a predetermined time.

Immersion time of the conveying conveyor 201 is possible by adjusting the rotational speed of the drive roller 202 and the driven roller 203, and also by adjusting the interval between the tension rollers (206, 207).

Immersion time can be adjusted according to the condition and degree of condensation.

The hot water stored in the housing 310 is lowered in temperature while melting the ice bound to the transfer conveyor 201. The hot water is supplied to the housing 310 in order to maintain the temperature of the hot water. Heat supply unit (not shown) may be combined.

The heat supply method of the heat supply unit is not limited, and various methods suitable for patent purposes such as an electric heat transfer method may be used.

In addition, one end of the housing 310 may further include a hot water supply pipe 320 for supplying hot water to the housing 310.

Since hot water is supplied through the hot water supply pipe 320, the temperature of the hot water in the housing 310 is maintained above a predetermined temperature.

The hot water supply pipe 320 is connected to a hot water source (not shown).

One end of the housing 310 may further include a hot water discharge pipe 330 for discharging the hot water of the housing 310.

While the ice melts through the hot water discharge pipe 330, hot water whose temperature is lowered is discharged.

The drying unit is installed adjacent to the moving direction of the transfer conveyor 201 in the immersion unit 300 to inject air to the transfer conveyor 201 to dry the transfer conveyor.

The drying unit may include an air spray nozzle 410 for injecting air to the transfer conveyor 201 and a compressor 420 connected to the air spray nozzle 410 to supply air.

The air spray nozzle 410 is advantageously sprayed from the upper side of the conveying conveyor 201 in scattering and drying the moisture in the conveying conveyor 201.

The drying unit is not limited as long as it is a method of drying by spraying air, it is preferable that a hot air drying method is used.

As described above, the transfer conveyor 201 is immersed in hot water by the immersion unit 300 and dried by air, so that condensation generated in the transfer conveyor 201 can be removed. Can be prevented.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications or changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. In addition, it is natural that it belongs to the scope of the present invention.

1 is a flowchart illustrating a frozen rice manufacturing process of the present invention.

Figure 2 is a schematic diagram schematically showing a frozen rice manufacturing system according to an embodiment of the present invention.

3A is a schematic front view of the separator of FIG. 2.

3B is a schematic plan view of the separator of FIG. 2.

4 is a schematic view showing the rapid freezing apparatus of FIG.

5 is a front view illustrating the partition of FIG. 4.

Figure 6 is a schematic diagram showing another embodiment of the rapid freezing apparatus of the present invention.

7 is an enlarged schematic view of the immersion part of FIG. 6.

<Description of Main Reference Signs>

10: rice 90: input unit

DESCRIPTION OF SYMBOLS 100 Separation part 101,201 Transfer conveyor 102 and 202 Drive roller 103 and 203 Drive roller 105.106.107.108 Vibrator 110 Roll brush

114: shatterproof plate 120: lifting cylinder

131,132,133: Air supply pipe 141,142,143: Compressor

150: air spray nozzles 161, 162, 163: actuator

171,172,173: Cooling unit 180: Camera

204, 205: conveying conveyor support 206, 207: tension roller 208, 209: idle roller 200: rapid freezing device

210: first freezing room 211, 221: partition

212,222,231: Temperature measuring sensor 213,223,232: Refrigeration unit

212,213: Hall 220: Second freezing room

230: third freezing room 240: control unit

300: immersion unit 310: housing

320: hot water supply pipe 330: hot water discharge pipe

410: air spray nozzle 420: compressor

500: packaging

Claims (10)

A conveying conveyor for continuously supplying the aggregated grains; And A freezer having a plurality of freezing rooms installed on the conveying conveyor to freeze the grains fed continuously; The internal temperature of each of the plurality of freezing rooms is lowered sequentially in accordance with the direction of the grain, The conveying conveyor is provided with condensation removing means for removing condensation generated in the conveying conveyor, The condensation removing means, An immersion part located at a lower side of the transport conveyor and immersed while the transport conveyor is in progress; And Rapid freezing apparatus of the frozen rice manufacturing apparatus including a drying unit installed in the immersion unit in the advancing direction of the transfer conveyor to dry the transfer conveyor by injecting air to the transfer conveyor. The method of claim 1, The conveying conveyor is a rapid freezer of the frozen rice manufacturing apparatus, characterized in that it has a mesh structure. The method of claim 2, The freezer, A first freezing room maintaining an internal temperature set to a first temperature; A second freezing room installed adjacent to the first freezing room in a traveling direction of the grain to maintain an internal temperature set to a second temperature; And And a third freezer installed adjacent to the second freezing room in the advancing direction of the grain to maintain an internal temperature set to a third temperature. The method of claim 3, wherein The first temperature is -15 ° C to -20 ° C, the second temperature is -25 ° C to -30 ° C, the third temperature is -35 ° C to -40 ° C rapid freezing in the frozen rice manufacturing apparatus, characterized in that Device. delete delete The method of claim 1, The immersion part, A housing in which the upper side is opened and hot water is stored; And Rapid freezing device of the frozen rice manufacturing apparatus comprising a heat supply unit coupled to the housing for supplying heat to the housing. The method of claim 1, The immersion part, A housing in which the upper side is opened and hot water is stored; A hot water supply pipe installed at one end of the housing to supply hot water to the housing; Is installed in one end of the housing rapid freezing device of the frozen rice manufacturing apparatus comprising a hot water discharge pipe for discharging the hot water of the housing. The method of claim 1, The drying unit, A compressor for compressing air; And The rapid freezing device of the frozen rice manufacturing apparatus including an air spray nozzle in communication with the compressor to inject the compressed air compressed in the compressor to the conveying conveyor. The method of claim 9, The drying unit is a rapid freezing device of the frozen rice manufacturing apparatus, characterized in that the hot air drying method.

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