KR102303538B1 - Refrigerator for grain - Google Patents

Abstract

In the present invention, when the cooling unit is cooled, when moisture generated in the inner space flows out, the grains stored in the grain storage unit are rotted or damaged by moisture, and this moisture is absorbed by the salt filled in the internal space. As it is configured so that it is not necessary to install a separate drainage device, the overall volume is reduced as well as the cost is reduced. As the time is reduced and the temperature inside the grain storage bin can be smoothly lowered to the set temperature even when the outside temperature of the grain refrigerator is high, there is no need to install a separate cooling device, so the overall volume of the grain refrigerator is reduced. The cost is reduced, and the one-time discharge of the rotary bin installed at the lower part of the grain storage bin is configured so that the user can obtain a certain amount of grain without separate metering, and the moisture formed in the inner space of the cooling unit is discharged to the outside. When discharged, the discharged water is configured to be discharged along the heat sink structure in a heated state, so that the discharged water is heated by the heat sink structure and discharged in a gaseous state to reduce the volume because there is no need to install a separate water discharge means It is about a grain refrigerator that can be used.

Description

Grain Refrigerator {Refrigerator for grain}

The present invention relates to a grain refrigerator, and more specifically, by filling the inside of the cooling unit for cooling the grain stored in the grain storage bin with salt, it is possible to absorb moisture generated inside the cooling unit and improve the cooling efficiency at the same time. It is about the grain refrigerator.

In general, grains such as rice, brown rice, barley, soybeans and red beans are stored in rice barrels, jars, etc., out of exposure to sunlight, or stored in a refrigerator.

However, when grains are stored outside, they are affected by external humidity, and when the humidity is high, pests or molds occur. problems will arise.

In addition, when grains are stored in the refrigerator, there is a problem that the food smells in the refrigerator.

In order to solve this problem, domestic registered utility model No. 20-0390039 (Title of the invention: cooling device for grain refrigerator) (hereinafter referred to as 'prior art') was developed.

1 is a perspective view of the prior art.

As shown in FIG. 1 , the prior art 100 includes a cooling post 110 , a housing 120 , a heater wire 130 , a heat dissipation fin 140 , and a cooling fan 150 .

The cooling post 110 is formed in a cylindrical shape and is made of a material having excellent thermal conductivity.

In addition, a Peltier element 111 is attached to the lower surface of the cooling post 110 .

The Peltier element 111 is cooled on one surface when an electric current flows, and the other surface is heated.

The Peltier element 111 has a cooled surface attached to the cooling post 110 to transmit cold air to the cooling post 110 , and a heated surface attached to the heat dissipation fin 140 to radiate heat to the outside.

The housing 120 is installed to surround the cooling post 110 , and transfers the cold air emitted from the cooling post 110 to the grain.

In addition, the housing 120 has breathability and is formed of a material such as loess or charcoal that can absorb moisture to absorb moisture that may be generated during the cooling process, thereby preventing the grains from being exposed to moisture.

The heater wire 130 is installed in the space between the cooling post 110 and the housing 120 , and the humidity inside the housing 120 exceeds a threshold by a humidity sensor (not shown) installed inside the housing 120 . In this case, it is determined that moisture is condensed on the outer surface of the cooling post 110 due to dew condensation, and the moisture condensed on the outer surface of the cooling post 110 is removed by heat.

The heat dissipation fin 140 has one surface in contact with the Peltier element 111 and radiates heat transferred through the Peltier element 111 to the outside.

The cooling fan 150 is installed on the heat dissipation fin 140 to discharge the heat of the heat dissipation fin 140 to the outside.

In the grain refrigerator to which the prior art 100 configured as described above is applied, the grain inside is cooled through the cooling post 110 and the housing 120 , and moisture inside the housing 120 is removed through the heater wire 130 . By giving it, it is possible to prevent the moisture inside the housing 120 from leaking to the outside, thereby preventing the grain from rotting or being damaged.

However, in the prior art 100, the cooling efficiency increases when the cooling post 110 and the housing 120 are attached, but the housing 120 is overcooled so that the temperature inside the grain refrigerator falls below a preset temperature, and the housing By generating dew condensation on the outer peripheral surface of 120, the grain stored in the grain refrigerator is rotted or damaged.

For this reason, the cooling post 110 and the housing 120 are installed to be spaced apart from each other, and the cold air of the cooling post 110 is delayed due to the air between the cooling post 110 and the housing 120, so that the cooling efficiency is reduced. and the cooling rate is reduced.

In addition, since the prior art 100 has low cooling efficiency, when the external temperature is high, the temperature inside the grain refrigerator cannot be cooled to a preset temperature, so that the grain stored in the grain refrigerator cannot be cooled smoothly. .

For this reason, in the prior art 100, a separate forced cooling means is additionally installed in the heat dissipation part of the cooling device to cool it to a preset temperature, so the overall volume of the grain refrigerator increases as well as the cost.

In addition, since the grain refrigerator to which the prior art 100 is applied removes moisture by heating it through a heater wire 130 to remove the frost inside the housing, the temperature of the housing 120 rises in the process of removing moisture. This causes a problem in that the temperature inside the grain refrigerator rises and the quality of the grains stored therein is deteriorated.

In addition, since the grain refrigerator to which the prior art 100 is applied does not have a separate means for controlling the amount of grain discharged from the grain refrigerator, a process for the user to measure the grain discharged from the grain refrigerator must be additionally performed.

Due to this, when the discharged grain is insufficient, the user has to discharge additional grain, and when the discharged grain is more than necessary, the user has to take the grain and put it back into the grain refrigerator, which increases the time it takes to discharge the grain from the grain refrigerator will do

The present invention is intended to solve this problem and relates to a grain refrigerator capable of preventing moisture from leaking into the grain storage unit by absorbing moisture generated in the inner space of the cooling unit when the cooling unit is cooled by salt.

In addition, another solution to the present invention is to provide a grain refrigerator capable of cooling the temperature inside the grain storage bin up to a preset temperature without additionally installing a separate cooling device by increasing the cooling efficiency by the salt built into the inner space of the cooling unit. it's about

In addition, another solution to the present invention relates to a grain refrigerator capable of discharging a desired amount of grain without separate metering by being configured so that the discharge amount at one time of the rotary tube installed in the lower portion of the grain storage tube is constant.

In addition, another solution to the present invention is to discharge moisture formed in the internal space of the cooling unit to the outside, so that the discharged moisture is discharged along the heat sink structure in a heated state, so that the moisture is discharged in a gaseous state. it's about

The solution of the present invention for solving the above problems is a grain refrigerator comprising a case-shaped case with an open top, a grain storage unit installed inside the case and storing grains, and a cooling unit for cooling the grains: a cooling rod having an upper portion protruding through the lower surface of the grain storage unit and protruding into the grain storage unit, and a lower portion positioned outside the lower surface of the grain storage unit; a Peltier element having an upper surface attached to the lower surface of the cooling rod to cool the cooling rod, and emitting heat through the lower surface; a heat sink structure that is in contact with the lower surface of the Peltier element and is heated by heat generated from the Peltier element, and radiates heat to the outside; a cooling tube body formed in a circular tube shape with a closed upper portion, an inner diameter larger than an outer diameter of the cooling rod, and installed to surround the cooling rod during assembly; and a cold air transfer medium filled in the inner space formed between the cooling rod and the cooling tube body, formed in a funnel shape on the outer circumferential surface of the cooling rod to be inclined at a portion adjacent to the lower end of the cooling rod, and the inner periphery is the outer circumferential surface of the cooling rod is installed to be connected to, and a drip plate having a water outlet for discharging moisture is installed at the lowest position, and the heat sink structure is formed in a flat plate shape, and water is discharged through upper and lower surfaces at a position corresponding to the water outlet. a heat dissipation frame in which the ball is formed; It is formed in a flat plate shape and includes heat sinks installed perpendicularly to the lower surface of the heat dissipation frame, and the heat dissipation unit moves moisture discharged through the water outlet to one of the heat sinks through the water outlet and moves along the heat sink. When moving downward, the moisture is vaporized by the heat of the heat sinks.

In addition, in the present invention, the cooling auxiliary means is preferably baked salt from which moisture contained therein is removed through a heating process.

delete

In addition, in the present invention, the grain storage unit has an upper opening, the lower surface is formed in an inclined housing shape, the grain storage bin having a grain outlet formed on the lower surface; One end is formed in a closed circular tubular shape, the first opening and the second opening passing through the outer peripheral surface and the inner peripheral surface are formed in the longitudinal direction, are formed to face each other, the first opening is the grain so as to communicate with the grain outlet Rotating barrel housing installed in the lower part of the reservoir; It is formed in a circular tube shape with both ends closed, and a third opening passing through the inner and outer circumferential surfaces is formed in the longitudinal direction and includes a rotary tube rotatably installed inside the rotary tube housing, wherein the rotary tube includes the third opening When is installed to face the first opening of the rotating tub housing, the grain of the grain storage bin flows into the inside, and when the third opening is rotated to face the second opening of the rotator housing, the first The opening is closed to stop the inflow of grain, and it is preferable that the grain inside is discharged to the grain discharge container through the second opening.

In addition, in the present invention, the rotation tube is preferably connected to a locking protrusion on the outer peripheral surface, and when the locking jaw is installed inside the second opening of the rotary tube housing, the rotation angle is limited.

In addition, in the present invention, it is preferable that an insulating block is installed at the lower portion of the grain storage unit to surround the cooling tube body protruding from the grain storage unit.

According to the present invention having the above problems and solutions, when the cooling unit is cooled, when the moisture generated in the inner space is leaked to the outside, the grain stored in the grain storage unit is rotted or damaged by moisture. As it is configured to be absorbed by the salt filled in the space, it is not necessary to install a separate drainage device, thereby reducing the overall volume as well as reducing the cost.

In addition, according to the present invention, the cold air of the cooling rod is rapidly transferred to the cooling tube by the salt filled in the inner space of the cooling unit, thereby reducing the cooling time of the cooling tube and at the same time, the internal temperature of the grain storage bin even when the external temperature of the grain refrigerator is high. As the temperature of the grain refrigerator can be smoothly lowered to the set temperature, there is no need to install a separate cooling device, thereby reducing the overall volume of the grain refrigerator and reducing costs.

In addition, according to the present invention, since the one-time discharge of the rotary barrel installed in the lower part of the grain storage container is configured to be constant, the user can obtain a certain amount of grain without separate measurement.

In addition, according to the present invention, when moisture formed in the internal space of the cooling unit is discharged to the outside, the discharged moisture is configured to be discharged along the heat sink structure in a heated state, so that the discharged water is heated by the heat sink structure and discharged in a gaseous state Since there is no need to install a separate water discharging means, the volume can be reduced.

1 is a perspective view of the prior art.
Figure 2 is an exploded perspective view of the grain refrigerator of the present invention.
FIG. 3 is a cross-sectional view of FIG. 2 .
4 is an exploded perspective view of the grain storage unit of FIG.
5 is an exemplary view for explaining the grain withdrawal process of the grain refrigerator.
6 is an exploded perspective view of the cooling unit of FIG. 2 .
7 is a cross-sectional view of the cooling unit of FIG. 2 .

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

2 is an exploded perspective view of the grain refrigerator of the present invention, and FIG. 3 is a cross-sectional view of FIG.

As shown in FIGS. 2 and 3 , the grain refrigerator 1 includes a case 2 , a grain storage unit 3 , a cooling unit 4 , an insulating block 5 , and a grain discharge tube 6 .

The case (2) is formed in a box shape with an open top, and a grain storage unit (3), a cooling unit (4), an insulating block (5), and a grain discharge tube (6) are installed therein.

At this time, in FIG. 2, for convenience of explanation, the shape of the case 2 has been described as an example of a rectangular pole shape, but the shape of the case 2 is not limited thereto and may be formed in various shapes such as a cylinder and a polygonal pole. have.

In addition, one surface of the case (2) is formed with a discharge tube insertion hole 21 into which the grain discharge tube 6 is inserted.

4 is an exploded perspective view of the grain storage unit of FIG.

The grain storage unit 3 includes a grain storage container 31 , a rotary casing 32 , a rotary barrel 33 , a rotary shaft 34 , and a handle 35 .

The grain storage bin 31 is formed in the shape of a housing with an open upper portion, and the lower surface is formed to be inclined.

In addition, the cooling part through-hole 311 through which the cooling part 4 penetrates in the center is formed in the lower surface of the grain storage container 31 .

In addition, a grain outlet 312 through which grains are discharged at the lowest point in height is formed on the lower surface of the grain storage bin 31 .

In addition, the grain storage bin 31 is provided with a rotary tubular housing 32 of a circular tube shape at the lower portion of the grain outlet 312 .

The rotary tube housing 32 is formed in a circular tube shape with one end closed, and a first opening 321 and a second opening 322 penetrating an outer peripheral surface and an inner peripheral surface are formed in the longitudinal direction, and are formed to face each other.

At this time, the rotary tub housing 32 is installed so that the first opening 321 communicates with the grain outlet 312 of the grain storage bin 3 .

In addition, the rotating cylinder 33 is rotatably installed in the rotating cylinder housing 32 by the rotating shaft 34 .

The rotary tube 33 is formed in a circular tube shape with both ends closed, and a third opening 331 penetrating the inner and outer peripheral surfaces is formed in the longitudinal direction.

In addition, a locking jaw 332 is connected to the outer circumferential surface of the rotary tube 33 .

The rotary shaft 34 is installed to pass through the rotary tube housing 32 , the rotary tube 33 , and the case 2 , and a handle 35 is coupled to an end protruding outward of the casing 2 .

At this time, the rotary shaft 34 is rotatably installed in the rotary tube housing 32 , and is coupled to the rotary tube 33 so that the rotary tube 33 is rotatably installed inside the rotary tube housing 32 .

In addition, the rotary shaft 34 allows the user to rotate the rotary tube 33 from the outside through the handle 35 installed at the end.

5 is an exemplary view for explaining the grain withdrawal process of the grain refrigerator.

As shown in FIG. 5, the grain storage unit 3 is disposed so that the third opening 331 of the rotary barrel 33 faces the second opening 322 in normal time so that the grains G stored therein are rotated. Since the second opening 322 of the rotary tube housing 32 is blocked by the tradition 33 , the grain G is blocked from flowing into the rotary tube 33 . Due to this, the grain (G) is stored in a cooled state by the cooling unit (4) in the interior of the grain storage (31).

At this time, the grain storage unit 3 is disposed so that the third opening 331 faces the first opening 321 of the rotating barrel housing 32 when the rotary barrel 33 is rotated clockwise by the user, so that the grain Grain (G) of the storage bin 31 is introduced into the rotary barrel 33, the rotary barrel 33 closes the second opening 322 of the rotary barrel housing 32, so that the grain (G) is a grain discharge container (6) is blocked from being discharged.

In this state, when the user rotates the handle 35 counterclockwise in the grain storage unit 3 , the third opening 331 of the rotating barrel 33 opens the second opening 322 of the rotating barrel housing 32 . ), the grain (G) inside the grain storage bin 31 is prevented from flowing into the rotating trough 33 and at the same time, the grain (G) inside the rotating trough 33 is transferred to the grain discharging trough (6). is emitted

At this time, the rotating cylinder 33 is rotated, the locking jaw 332 connected to the outer circumferential surface is in contact with the rotating cylinder housing 32, so that the rotation angle is limited.

The grain storage unit 3 configured as described above is normally cooled by the cooling unit 4 while the grain G is located in the grain storage trough 31 , and the user operates the rotary trough 33 through the handle 35 . When rotating, the grain (G) inside the grain storage unit (3) is introduced into the rotating barrel (33).

At this time, the rotary tube 33 is kept in a state filled with the grain (G) as much as a predetermined capacity inside because the grain (G) introduced into the inside is blocked from being discharged to the grain discharge tube (6), once again the user When the handle 35 is turned, the grain (G) inside is discharged to the grain discharge container (6).

Due to this, the user is able to withdraw the grain (G) as much as the volume of the rotary tube (33) at once, so that the grain (G) of the predetermined amount can be withdrawn without a separate measurement.

6 is an exploded perspective view of the cooling unit of FIG. 2 , and FIG. 7 is a cross-sectional view of the cooling unit of FIG. 2 .

As shown in FIG. 6 , the cooling unit 4 includes a cooling rod 41 , a heat sink structure 42 , a cooling fan 43 , and a cooling tube body 44 . It consists of a mesh network (45).

The cooling rod 41 is formed in a circular rod shape and is made of a material having excellent thermal conductivity.

In addition, the cooling rod 41 is a Peltier element 411 is attached to the lower surface.

The Peltier element 411 is an element that operates on the principle that when current flows, one surface is cooled, and the other surface is heated.

The Peltier element 411 has one surface attached to the lower surface of the cooling rod 41 to cool the cooling rod 41, and the other surface is attached to the upper surface of the heat sink structure 42 to transfer heat to the heat sink structure 42. .

In addition, on the outer peripheral surface of the cooling rod 41, a drip plate 412 is installed in a portion adjacent to the lower end.

The drip tray 412 is formed in a funnel shape, and is inclinedly installed at a position adjacent to the lower portion of the cooling rod 41 .

At this time, the inner edge of the drip tray 412 is installed to be connected to the outer peripheral surface of the cooling rod (41).

In addition, the outer edge of the drip plate 412 is installed to be in contact with the inner peripheral surface of the cooling tube body 44 during installation.

In addition, the water receiving plate 412 is formed to have the lowest height and a funnel-shaped water outlet 4121 through which water is discharged at a location where water is collected by gravity is formed to protrude downward.

At this time, when the water outlet 4121 is installed, the lower end is in contact with the heat sink structure 42 and is installed to communicate with the water outlet 4211 formed in the heat dissipation frame 421 .

In addition, an opening and closing door 41211 is installed at the lower end of the water outlet 4121 .

In addition, a pair of electrodes 41212 are installed to be spaced apart from each other on the inner surface of the water outlet 4121 .

In this case, the electrodes 41212 open the opening and closing doors 41211 only when electricity is applied.

These electrodes 41212 are installed to be spaced apart from each other in normal times so that current does not flow, but when moisture collects at the top of the opening and closing door 41211 and reaches the electrodes 41212, they are energized by moisture to open the opening and closing door 41211. By opening it, the moisture is released.

For this reason, the opening and closing door 41211 is normally closed to prevent heat from rising from the heat sink structure 42 , and to be opened only when moisture is discharged, so that the heat of the heat sink structure 42 flows into the internal space 441 . This can prevent a decrease in cooling efficiency.

In this drip plate 412 , when the cooling rod 41 is cooled and condensation occurs in which water vapor is condensed, moisture is discharged to the outside through the water outlet 4121 and the water outlet 4211 .

The heat sink structure 42 includes a flat heat dissipation frame 421 to which a Peltier element 411 is attached to an upper surface, and a plurality of flat heat sinks 422 vertically coupled to a lower surface of the heat dissipation frame 421 . .

The heat sink structure 42 receives heat generated from the Peltier element 411 through the heat radiation frame 421 , and radiates the heat to the atmosphere through the heat sinks 422 .

In addition, the heat dissipation frame 421 is formed with a water discharge hole 4211 that is formed through from the upper surface to the lower surface.

When the water discharge hole 4211 is installed, the upper end is formed at a position corresponding to the water outlet 4121 , and the lower end is formed to face one of the heat sinks 422 .

These water discharge holes 4211 allow moisture introduced through the water discharge holes 4211 to move downward along the heat sink 422 .

At this time, since the heat sink 422 is heated by the heat of the Peltier element 411 , when moisture moves downward along the heat sink 422 , it is vaporized and changed into water vapor.

Due to this, the grain refrigerator (1) is discharged to the outside in the form of water vapor in the form of water generated by the cooling unit (4), so that it is not necessary to install a separate water discharge means, the volume and cost is reduced.

The cooling fan 43 is installed under the heat sink structure 42, and by cooling the heat sink structure 42, the heat of the Peltier element 411 is more rapidly discharged to the outside, so that the cooling process of the cooling rod 41 is smooth. to make it happen

The cooling tube body 44 is formed in a circular tube shape with a closed upper portion, and is made of loess, and the inner surface is glazed to block moisture so that moisture does not escape from the inside to the outside.

At this time, the cooling tube body 44 has been described as being made of loess for convenience of explanation, but the material for the cooling tube body 44 is not limited thereto, and various types of materials such as charcoal and ceramics may be used. .

In addition, the cooling tube body 44 is formed to have an inner diameter larger than the outer diameter of the cooling rod 41, and is formed so that the inner circumferential surface is in contact with the end of the drip tray 412, so that when installed, it is spaced apart from the outer circumferential surface of the cooling rod 41 and the inner space (441) is formed.

At this time, the internal space 441 is filled with salt (S) baked on the upper portion of the drip tray 412 as shown in FIG.

Since this baked salt (S) is a hygroscopic material, it primarily absorbs moisture formed in the inner space 441 due to water vapor and dew condensation, and the moisture formed in the inner space 441 is discharged to the grain storage bin 31 and grain It prevents the grain in the storage bin 31 from rotting by moisture.

In addition, the baked salt (S) serves to increase the cooling efficiency by more rapidly transferring the cold air of the cooling rod 41 to the cooling tube body 44 and the grain storage bin 31 because it is cooled faster than air and moisture.

At this time, it has been described as an example that the internal space 441 formed by the cooling tube body 44 and the cooling rod 41 is filled with the baked salt (S), but the material filled in the internal space 441 is not limited thereto. In addition, various materials with high hygroscopicity and cooling efficiency can be filled.

The mesh network 45 is formed in a cylindrical tube shape with a closed upper portion, and the cooling tube body 44 is installed therein.

In addition, the mesh network 45 is formed with a plurality of through-holes 451 penetrating the inner and outer peripheral surfaces.

At this time, the through-holes 451 are formed smaller than the grains introduced into the grain storage bin 3 to prevent the grains from being in direct contact with the cooling tube body 44 and being supercooled.

The cooling unit 4 configured as described above is inserted into the cooling unit through-hole 312 in which the cooling rod 41 , the cooling tube body 44 , and the mesh network 45 are formed in the grain storage bin 31 , the grain storage bin 31 . It cools the grain stored inside.

In addition, the cooling unit 4 is filled with baked salt (S) in the internal space 441 formed between the cooling rod 41 and the cooling tube body 44 to increase cooling efficiency as well as to absorb moisture, so that a separate moisture absorption device However, since there is no need to install a cooling means, the cost is reduced and the volume is reduced.

In addition, in the cooling unit 4, moisture not absorbed by the baked salt S is discharged to the outside by the drip plate 412 formed on the cooling rod 41, and the discharged moisture is absorbed by the heat of the heat sink structure 42. By being configured to be vaporized by the water, it is not necessary to prepare a separate water discharging process and tools, thereby reducing the volume and cost.

The following [Table 1] shows that when the current temperature inside the grain storage bin 31 is 28 ℃ and the cooling temperature is set to 13 ℃, the temperature inside the grain storage bin 31 that changes as the cooling unit 4 is operated is the measured value of

0h 4h 8h 12h 16h 20h 24h 28h 32h 36h Example 1 28.0 23.9 20.0 16.6 14.3 13.0 13.0 12.9 12.9 13.0 Comparative Example 1 28.0 25.9 24.2 23.2 22.0 20.9 19.7 19.0 18.9 19.0 Comparative Example 2 28.0 24.0 20.3 17.0 15.1 13.5 13.0 12.9 13.0 13.0

이다.The unit is ℃. At this time, the volume of the internal space 441 of the cooling unit 4 is

am.

Example 1 is a grain refrigerator filled with 1000 g of baked salt in the inner space 441.

At this time, baked salt is salt that has been arbitrarily heated to remove moisture from the inside.

Comparative Example 1 is a grain refrigerator filled with air inside the inner space 441 .

Comparative Example 2 is a grain refrigerator filled with 1000 g of salt having a water content (= weight of water/total weight * 100) of 10% in the inner space 441 .

Referring to Example 1 with reference to Table 1, in Example 1, the temperature inside the grain storage bin 31 is continuously decreased, and when it reaches the set temperature of 13° C. The temperature will not decrease and will remain at that temperature.

On the other hand, in Comparative Example 1, the temperature inside the grain storage bin 31 is continuously decreased, and when 24 to 28 hours have elapsed, it reaches 19° C., and the temperature is no longer reduced.

In addition, in Comparative Example 2, the temperature inside the grain storage bin 31 is continuously decreased, and when 20 to 24 hours have elapsed, the set temperature of 13° C. is reached and the temperature is maintained.

Compared with Comparative Example 1 in which the salt (S) baked in the interior of the cooling unit (4) is not filled by filling the internal space (441) of the cooling unit (4) in Example 1, It can be seen that the cooling rate and cooling efficiency are higher.

In addition, in Comparative Example 1, it can be confirmed that the temperature is no longer reduced at 19°C due to the decrease in cooling efficiency.

In Comparative Example 1, when the external temperature increases, since it is impossible to cool the temperature of the grain storage bin 31 to a set temperature, the grain stored in the grain storage bin 31 is deteriorated or damaged.

In addition, Comparative Example 2 reaches the set temperature of 13° C. unlike Comparative Example 1, but it can be seen that the time to reach the set temperature is slower than in Example 1 because the thermal conductivity is reduced by the moisture contained in the salt.

That is, when the grain refrigerator 1 is filled with salt (S) baked inside the cooling unit 4 as in Example 1, when air is filled (Comparative Example 1) or salt containing moisture (Comparative Example 2) ), the cooling rate and cooling efficiency are increased compared to when it is filled.

For this reason, when the roasted salt (S) is filled in the internal space 441 of the cooling unit 4, the grain refrigerator 1 increases the cooling rate and cooling efficiency without a separate cooling device even in summer when the outside temperature is high. It is possible to cool the grain storage bin 31 up to a set temperature, and the cooling rate is also increased.

The heat insulating block 5 is formed in a housing shape, and the inside of the heat insulating block 5 is filled with a heat insulating material such as polyurethane or polyethylene.

In addition, the upper surface of the insulating block (5) is formed in a shape corresponding to the lower surface of the grain storage container (31).

In addition, the heat insulating block 5 is formed with a cooling unit insertion hole 51 penetrating the upper and lower surfaces.

This insulating block 5 is installed to surround the cooling rod 41 that is not inserted into the grain storage unit 3, the cooling tube body 44, and the lower end of the mesh network 45, so that the cold air is By preventing leakage to the outside, it increases cooling efficiency.

In addition, the heat insulation block 5 prevents the heat generated from the heat sink structure 42 from being transferred to the lower surface of the grain storage container 31 so that the grain located on the lower surface of the grain storage container 31 is the heat of the heat sink structure 42 . to prevent damage by

The grain discharge tube 6 is formed in a cylindrical shape with an open top, and is inserted into the discharge tube insertion hole 21 formed in the case 2 .

Since the grain discharge tube 6 is located at the lower part of the rotary tube 33, when the rotary tube 33 is rotated, the grain inside the rotary tube 33 is introduced, and the user can remove it from the case 2 as needed. can be separated.

1: Grain refrigerator 2: Case
21: discharge bin insertion hole 3: grain storage unit
31: grain storage bin 32: rotary bin housing
33: rotary cylinder 34: rotary shaft
35: handle 4: cooling unit
41: cooling rod 42: heat sink structure
43: cooling fan 44: cooling tube body
45: mesh network 5: insulation block
6: Grain discharge container

Claims (7)

In a grain refrigerator comprising a case-shaped case with an open upper portion, a grain storage unit installed inside the case and storing grains, and a cooling unit cooling the grains:
the cooling unit
a cooling rod having an upper portion protruding through the lower surface of the grain storage unit and protruding into the grain storage unit, and a lower portion positioned outside the lower surface of the grain storage unit;
a Peltier element having an upper surface attached to the lower surface of the cooling rod to cool the cooling rod, and emitting heat through the lower surface;
a heat sink structure that is in contact with the lower surface of the Peltier element and is heated by heat generated from the Peltier element, and radiates heat to the outside;
a cooling tube body formed in a circular tube shape with a closed upper portion, an inner diameter larger than an outer diameter of the cooling rod, and installed to surround the cooling rod during assembly;
and a cold air transfer medium filled in the inner space formed between the cooling rod and the cooling tube body,
On the outer peripheral surface of the cooling rod
It is formed in a funnel shape and is inclinedly installed at a portion adjacent to the lower end of the cooling rod, the inner rim is installed to be connected to the outer circumferential surface of the cooling rod, and a water outlet through which water is discharged at the lowest position is installed.
The heat sink structure is
a heat dissipation frame formed in a flat plate shape and having water discharge holes penetrating upper and lower surfaces at positions corresponding to the water outlets;
It is formed in a flat plate shape and includes heat sinks installed perpendicular to the lower surface of the heat dissipation frame,
the heat sink
When the moisture discharged through the water outlet moves to one of the heat sinks through the water outlet and moves downward along the heat sink, the moisture is vaporized by the heat of the heat sinks. The method according to claim 1, wherein the cold air transfer medium is
Grain refrigerator, characterized in that it is baked salt from which moisture contained inside has been removed through a heating process. delete The method according to claim 2, wherein the water outlet is
an opening and closing door installed in the lower part;
Including electrodes installed to be spaced apart from each other on the inner circumferential surface,
The opening door is
It is closed in normal times to prevent the heat of the heat sink structure from flowing into the inner space, but when moisture accumulates in the water outlet more than a certain amount, the electrodes are energized by moisture and the opening and closing door is opened. Grain refrigerator, characterized in that . The method according to claim 4, wherein the grain storage unit
a grain storage bin having an upper opening, the lower surface is formed in an inclined housing shape, and a grain outlet is formed on the lower surface;
One end is formed in a closed circular tube shape, the first opening and the second opening passing through the outer peripheral surface and the inner peripheral surface are formed in the longitudinal direction, are formed to face each other, the first opening to communicate with the grain outlet, the grain Rotating barrel housing installed in the lower part of the reservoir;
It is formed in a circular tube shape with both ends closed, and a third opening penetrating the inner and outer peripheral surfaces is formed in the longitudinal direction and includes a rotary tube rotatably installed inside the rotary tube housing,
The rotary tube
When the third opening is installed to face the first opening of the rotating housing, the grain of the grain storage is introduced into the inside, and the third opening is rotated to face the second opening of the rotating housing. , The first opening is closed to stop the inflow of grain, and grain refrigerator, characterized in that the grain inside is discharged to the grain outlet through the second opening. The method according to claim 5, wherein the rotary tube is
A locking jaw is connected to the outer circumferential surface, and the locking jaw is located inside the second opening of the rotary tube housing during installation, so that the rotation angle is limited. The method according to claim 6, wherein the lower portion of the grain storage
Grain refrigerator, characterized in that the insulation block is installed so as to surround the cooling tube body protruding from the grain storage unit.

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