KR20110062725A - Refrigerator for grain - Google Patents

Abstract

PURPOSE: A grain refrigerator is provided to prevent the insertion of the moisture from a storage unit into grains, and to discharge the moisture collected in the storage unit to the outside. CONSTITUTION: A grain refrigerator comprises the following: a storage unit(55) including an impermeable layer for preventing the moisture from passing through a wall of the storage unit and discharging to the outside; and a cooling unit cooling the inside of the storage unit. The impermeable layer is formed on the inner circumference or the outer circumference. The cooling unit includes a peltier element(31), and a cooling post(53) with one side receiving cold air from a cooling surface of the peltier element and the other side located in the storage unit.

Description

Grain Freezer {refrigerator for grain}

The present invention relates to a grain refrigerator provided with a receiving unit including a cooling means in the center of the chamber, and more specifically, an opaque layer is formed on the inner circumferential surface of the receiving portion, and an opaque layer is formed to melt the ice formed on the inner circumferential surface of the receiving portion. Drain pipes are installed so that water is efficiently drained, so that the grains are not deteriorated at a low temperature and are safely stored.

In the refrigerator for storing grains, various studies have been developed to uniformly distribute cold air in the refrigerator and to study the cooling device so that the grain is kept at a low temperature in order to prevent the grain from being deteriorated or the generation of pests.

Patent Application No. 20-0390039 by the applicant of the present invention (name of the invention: a cooling device of a grain refrigerator) describes the configuration of a grain refrigerator having a simple structure using a Peltier element.

1 is a cross-sectional view of a cooling apparatus disclosed in Korean Patent Registration No. 20-0390039 (name of the invention: a cooling apparatus of a grain refrigerator).

The cooling device 100 transmits the cold air generated on the upper surface (cooling surface) of the Peltier element 113 to the cooling post 101 so that the cold air is discharged, and the collecting plate 115 and the heat sink 117 are disposed on the lower surface (heat dissipating surface). ) Is connected to heat dissipation, and the heater 107 is installed on the outer surface of the insulating tube 105 to remove condensation generated during the cooling process.

In addition, the receiving portion 103 is preferably ocher or ceramic that can contain a certain amount of moisture generated in the cooling process while radiating far infrared rays.

In addition, the support member 109 is formed with a drain hole 111 inside the bottom surface between the insulating tube 105 and the cooling post 101, the drain hole 111 is formed so as to communicate with the side surface of the support member 109 heater 107 When the condensation is removed, the moisture generated is discharged to the back surface (heat dissipation surface) of the Peltier element 113.

Thus, the conventional grain refrigerator was effective in preventing condensation, etc., because the cooling post 101 is accommodated in the receiving portion 105 and contacts the grain, rather than the grains stored in the grain storage unit directly contacting the cooling post 101. The generated water is absorbed in the receiving portion 105 made of a material of far-infrared radiation such as ocher or ceramic, and the heater 107 is heated to remove condensation.

However, ocher or ceramic absorbs water up to a certain amount, but when water is absorbed more than a certain amount, water is no longer absorbed, so that grains in contact with the outer circumferential surface of the accommodating part 103 are deteriorated.

In addition, in the structure of the cooling device 100 of the conventional grain refrigerator, the condensation water generated in the cooling post 101 is drained to the outside or the rear surface (heat dissipation surface) of the Peltier element 113, but the receiving portion 103 The condensation formed on the inner circumferential surface is melted and there is no path through which water is discharged, thereby causing a problem in that moisture is accumulated between the accommodating part 103 and the insulator 105.

The present invention is to solve such a problem, the problem of the present invention is to drain the moisture accumulated in the inside of the receiving portion without the water penetrating into the grain adjacent to the receiving portion installed vertically in the interior of the receiving portion It is to provide a grain refrigerator to prevent the alteration of grain.

Solution to solve the above problem is a grain refrigerator provided with a cooling device for cooling the grain of the grain storage unit inside the housing; Receiving portion formed with an impermeable layer to prevent the moisture inside to pass through the wall to the outside; It includes cooling means for cooling the inside of the receiving portion.

In the present invention, the opaque layer is preferably formed on at least one of the inner circumferential surface, the outer circumferential surface or between the inner circumferential surface and the outer circumferential surface of the receiving portion.

In the present invention, the cooling means is a Peltier element, which is a thermoelectric conversion element, one side is installed to receive the cold air of the cooling surface of the Peltier element, the other side is installed so as to be located inside the receiving portion is the cold air of the cooling surface It is preferable to include the cooling post supplied to a accommodating part.

In addition, in the present invention, the impermeable layer is preferably formed by baking after glazing the receiving portion.

In the present invention, the impermeable layer is preferably formed of a resin.

In addition, the present invention includes an insulating tube installed between the cooling post and the receiving portion, it is preferable that a heater for generating heat on the outer peripheral surface of the insulating tube.

In addition, in the present invention, the cooling surface is installed to be in contact with the disk-shaped support member is formed with a protruding frame protruding upward from the outer peripheral surface, the lower end of the receiving portion is seated on the outside of the protruding frame, the cooling post is It is preferable to be installed at the center of the supporting member.

In the present invention, a through hole for discharging the stored grain and a through hole through which the receiving portion is formed is installed in the housing, an upper end of the receiving portion protrudes above the diaphragm, and a lower end of the receiving portion is the diaphragm. It is preferable to protrude to the bottom of the.

In addition, in the present invention, the heating and stopping of the heater is preferably performed by a program stored in the control unit.

According to the present invention having the above problems and solving means, so that the moisture in the receiving portion is removed so as not to be affected by the external environment, and the grain is safe without altering the moisture by passing moisture or condensation to the grain adjacent to the outside of the receiving portion. Can be archived.

Hereinafter, one embodiment of the present invention according to the accompanying drawings will be described in detail.

2 is a partially cutaway perspective view of a refrigerator which is one embodiment of the present invention, and FIG. 3 is a cross-sectional view of the grain refrigerator which is one embodiment of the present invention.

A diaphragm 9 is installed inside the housing 2 of the grain refrigerator 1 of FIG. 2, and a grain storage part 5 is formed on an upper portion of the diaphragm 9 inside the housing 2.

The diaphragm 9 is located inside the housing 2 and has a plate shape which is inclined upwardly toward the wall of the housing 2 around the straight bent portion in which the through hole 13 is formed.

In addition, the diaphragm 9 is formed such that the length of one end of the diaphragm 9 is longer than the length of the other end around the bent portion, and a through hole is formed between the one end and the bent portion, so that the cooling device 3 described later As the receiving portion 55 of the through) is inserted into the through hole, the cold air discharged from the receiving portion 55 is uniformly dispersed into the grains stored in the grain storage portion 5. That is, the lower portion of the receiving portion 55 is located at the lower portion of the diaphragm 9, and the body portion and the upper portion are positioned at the upper portion of the diaphragm 9.

In addition, a lower partition 19 of the housing 2 and a horizontal partition wall 15 are installed below the partition plate 9, and the partition wall 15 is provided with a cooling device 30 penetrating the partition plate 9. The through hole is formed to communicate with the through hole 13 of the diaphragm 9.

In addition, the through hole of the partition wall 15 is opened and closed by the opening and closing device 11 which is operated by the discharge handle (3) and pushes the discharge handle (3) to the right, the through hole (13) is opened to the grain storage unit (5) The grain stored in the discharge hole 7 is discharged through the through hole 13, and the discharge hole 3 is pushed to the left so that the through hole 13 is closed so that the grains are not discharged to the discharge container 7. .

In addition, the partition wall 15 is provided with a predetermined distance from the lower surface 19 of the housing 2 to form a space, and the discharge container 7 is installed on the lower surface 19 of the housing 2. 7 is installed to be movable in the lower surface 19 of the housing (2).

In addition, the cooling device 30 installed in the partition wall 15 will be described in detail with reference to FIG. 4.

4 is a cross-sectional view illustrating the cooling device of FIG. 3.

4 is a cooling device 30 of the grain refrigerator 1, which is an embodiment of the present invention, the cooling device 30 is installed to be coupled to the partition wall 15, and protrudes through the through-hole formed in the plate (9) By including the cooling means to ensure that the grains stored in the grain storage unit 5 can be kept at a low temperature.

The cooling device 30 is installed in the through hole formed in the partition wall 15 so that the upper surface (cooling surface) is exposed to the upper part of the partition wall 15, and the lower surface (heat dissipation surface) is exposed to the lower part of the partition wall 15. The conversion element, preferably the Peltier element 31, the support member 39 made of metal provided on the upper surface of the Peltier element 31, and the cylindrical metal material installed upward in the center of the support member 39 Of the heat sink (35) installed to be in contact with the cooling post (53), the heat dissipation surface which is the lower surface of the Peltier element (31), the fan (37) for cooling the heat of the heat sink (35), and the support member (39). It is installed in the upper portion, but the cooling posts 53 are accommodated therein so that the receiving portion 55 made of far-infrared radiation material to transfer the cold air of the cooling posts 53 to the grain storage portion 5, and the inner side of the receiving portion 55 And insulation of the cylindrical insulating tube 50 provided between the outer side of the cooling post 53 and the inside of the accommodating part 55, or thawing freezing. It consists of a heater 51 which is attached to the insulated tube 50 to make.

In addition, when the Peltier element 31 has one surface (cooling surface) connected to the support member 39, and the other surface (heat dissipation surface) connected to the heat sink 35, power is applied to the Peltier element 31 by the Peltier effect. One surface (cooling surface) of the Peltier element 31 is cooled, and the other surface (heat dissipation surface) is released so that a heat transfer path is formed through the upper surface of the Peltier element 31 → support member 39 → cooling post 53. Then, the accommodating portion 55 is cooled by the cooling post 53 so that the grains stored in the grain storage portion 5 formed between the housing 2 and the diaphragm 9 are cooled.

In addition, the support member 39 is installed in the shape of a disc that is installed to contact the cooling surface, which is the upper surface of the Peltier element 31, the cooling post 53 is installed in the center, protrudes upward along the circumference of the portion adjacent to the outer peripheral surface Protruding frame 49 is formed, the lower portion of the receiving portion 55 is inserted and fixed to the outer side of the protruding frame 49, the insulating tube 50 is installed inside the protruding frame 49, the supporting member By installing a plurality of drain pipes 41 and 43 connecting the upper and side surfaces or the lower surface of the 39 to discharge the moisture accumulated on the upper surface of the supporting member 39 to the outside of the supporting member 39.

In addition, the temperature sensor 69 is installed and detected between the insulation tube 50 and the receiving portion 55, the temperature signal detected by the temperature sensor 69 is input to the controller 60 to be described later.

The cooling post 53 is formed in a cylindrical shape projecting upward into the grain storage unit 5, is joined to the support member 39 by welding or the like, and is made of a thermal conductor to support the support member 39 being cooled by the Peltier element 31. ) To distribute the cold air evenly without variation according to the height of the grain storage (5). That is, since the temperature difference between the lower end and the upper end of the cooling post 53 is not large because the cooling post 53 transfers heat well, the cold air of the supporting member 39 is uniformly regardless of the height position of the cooling post 53. Will diverge.

In addition, the cool air of the cooling post 53 is transmitted to the receiving portion 55 which is installed on the outside of the cooling post 53, the receiving portion 55 is a far-infrared emitter having a much higher heat capacity than the cooling post 53. Since it is manufactured can hold the cold air delivered by the cooling post 53 for a long time to prevent the temperature change of the grain storage (5).

In addition, the receiving portion 55 is closed to the upper portion, the lower portion is formed so that the inner circumferential surface of the lower end of the opening is in contact with the outer circumferential surface of the protruding frame 49 of the support member 39 is inserted.

In addition, the receiving part 55 is made of a far-infrared radiation material such as ceramic or ocher material so that the moisture can be contained up to a predetermined amount so that the moisture generated in the cooling process is not directly transmitted to the grain, but the water inside the receiving part 55 If it penetrates into the receiving part 55 and exceeds the water-containing capacity of the receiving part 55, it causes condensation on the outside of the receiving part 55, thereby altering the grain. Therefore, the accommodating part 55 is manufactured such that an impermeable layer 57 is formed to prevent moisture in the accommodating part 55 from being transferred to the exterior of the accommodating part 55.

In addition, the impermeable layer 57 is formed by coating synthetic resin on the inner circumferential surface of the accommodating part 55 to prevent moisture from being passed through, or by glazing the inner and outer circumferential surfaces of the accommodating part 55 and firing the same.

5 is a flowchart illustrating a glazing process in an embodiment of the present invention.

First, a material (far infrared ray emitting material such as ocher or ceramic) is molded according to a specified shape and size (S100). After the primary molding, the molded article is naturally dried using sunlight and wind for 30 hours (S110). The naturally dried molding is first baked (primary) for 12 hours at a high temperature of 900 ℃ to 950 ℃ (S120). The inner circumferential surface of the primitive accommodating portion 55 contains a glaze liquid mixed in a weight ratio of 75 to 80% by weight of water and 20 to 25% by weight of glaze. At this time, glaze is used a lot of feldspar, the main component of igneous rock (S130). Secondary firing (chaebol) for 15 hours at a high temperature of 1150 ℃ to 1220 ℃ by the glaze is contained in the glazing liquid is glazed on the inner circumferential surface is fired by the opaque layer is completed (S140) .

6 is a block diagram illustrating a configuration of operating a heater in an embodiment of the present invention.

The controller 60 shown in FIG. 6 is preferably a microprocessor provided with a data storage unit 61, a set temperature and a set time are stored in the data storage unit 61, and the controller 60 is an analog-digital converter. And a Peltier element driving unit 63 for operating the Peltier element 31, and a heater driving unit 65 for driving the heater 51, and controlling the set temperature and the set time. An input unit 71 for inputting into the data storage unit 61 of 60 is connected.

In addition, the analog-to-digital converter 67 converts an analog signal of a temperature value received from the temperature sensor 69 into a digital signal, and the converted digital signal is input to the controller 60, and the controller 60 is set. By sending a control signal to the Peltier element driver 63 and the heater driver 65 in time to control the Peltier element 31 and the heater 51 to operate, the temperature and data input from the analog-to-digital converter 67 When the temperature is equal to the low set temperature previously stored in the storage unit 61, a control signal is transmitted to the heater driving unit 65 so that the heater 51 is heated.

7 is a flowchart illustrating an operation process of a controller in an embodiment of the present invention.

The data storage unit 61 stores an initial time (T = 0), stores command data arbitrarily named 'A' in which the Peltier element 31 is operated for 20 minutes, and stores the Peltier element 31 for 10 minutes. Command data randomly named 'B' is not stored, and command data randomly named 'C', which is forcedly stopped by the Peltier element 31 for one hour, is stored, and the heater 51 is operated for three minutes. After operation, the command data randomly named 'D' which is stopped for 7 minutes is stored (S1). The controller 60 controls to execute 'A' stored in the data storage 61 (S2). The controller 60 determines whether the measured value input from the temperature sensor 69 is higher than the low set temperature stored in the data storage 61 (S3). If the current temperature is lower than the low set temperature, the process of step 2 (S2) is performed after 'D' is executed (S4). Data 'B' stored in the data storage unit 61 is executed (S5). The controller 60 determines whether the time T from the time when the Peltier element 31 is first operated to the present is 11 hours or longer (S6). Data 'C' stored in the data storage unit 61 is executed (S7). Data 'A' stored in the data storage 61 is executed (S8). The controller 60 determines whether the measured value input from the temperature sensor 69 is higher than the low set temperature stored in the data storage 61 (S9). If the current temperature is lower than the low set temperature, the process of step 7 (S7) is performed after 'D' is executed (S10). Data 'B' stored in the data storage unit 61 is executed (S11). The controller 60 determines whether the time T from the time when the Peltier element 31 is first operated to the present is 22 hours or longer (S12). Data 'D' stored in the data storage unit 61 is executed (S13). Data 'A' stored in the data storage 61 is executed (S14). Data 'B' stored in the data storage unit 61 is executed (S15). Data 'A' stored in the data storage 61 is executed (S16). The controller 60 determines whether the measured value input from the temperature sensor 69 is higher than the low set temperature stored in the data storage 61 (S17). If the current temperature is lower than the low set temperature, the process of step 14 (S14) is performed after 'D' is executed (S18). Data 'C' stored in the data storage 61 is executed (S19). The value of T is again stored as 0, the process proceeds to step 2 (S2) and the process of step 2 is performed again (S20).

That is, in one embodiment of the invention, the operation process of the controller is repeated for 10 hours after the Peltier element 31 is operated (A) for 20 minutes and then stopped for 10 minutes (B). After the element 31 is forcibly stopped for one hour (C), the operation (A) for 20 minutes and the stop (B) for 10 minutes are repeated for 10 hours. When the repetition process lasts for 10 hours, the heater 51 is heated for 3 minutes, stopped for 7 minutes (D), the Peltier element 31 is operated for 20 minutes (A) and then stopped for 10 minutes (B) Then, another 20-minute operation (A) is executed, and then the Peltier element 31 is forcibly stopped for one hour (C).

As such, a preferred operating process of the cooling device 30 is designed for 24 hours, so that the grain refrigerator 1 safely stores grains at a low temperature and efficiently removes condensation generated during the cooling process.

In addition, in one embodiment of the present invention, a temperature sensor 69 is used as a device for predicting freezing and condensation, but may be configured using various sensors including a humidity sensor.

In addition, the Peltier element 31 is not operated during the winter depending on the value and time for setting the high set temperature and the low set temperature, and only the heater 51 may be operated to serve as a warmer.

In addition, in the exemplary embodiment of the present invention, the opaque layer has been described as being formed on the inner circumferential surface of the accommodating part 55. However, the opaque layer may be formed on at least one of the inner circumferential surface and the outer circumferential surface.

1 is a cross-sectional view of a cooling apparatus disclosed in Korean Patent Registration No. 20-0390039 (name of the invention: a cooling apparatus of a grain refrigerator).

2 is a partially cutaway perspective view of a grain refrigerator according to an embodiment of the present invention.

3 is a cross-sectional view of a grain refrigerator which is one embodiment of the present invention.

4 is a cross-sectional view illustrating the cooling device of FIG. 3.

5 is a flowchart illustrating a glazing process in an embodiment of the present invention.

6 is a block diagram illustrating a configuration of operating a heater in an embodiment of the present invention.

7 is a flowchart illustrating an operation process of a controller in an embodiment of the present invention.

Claims (9)

A grain refrigerator provided with a cooling device for cooling grains in a grain storage unit inside a housing; Receiving portion formed with an impermeable layer to prevent the moisture inside to pass through the wall to the outside; Grain refrigerator comprising a cooling means for cooling the interior of the receiving portion. The grain refrigerator according to claim 1, wherein the impermeable layer is formed on at least one of an inner circumferential surface, an outer circumferential surface, or between the inner circumferential surface and an outer circumferential surface of the receiving portion. According to claim 1 or claim 2, The cooling means is a Peltier element that is a thermoelectric conversion element, one side is installed to receive the cold air of the cooling surface of the Peltier element, the other side is installed so as to be located inside the receiving portion And a cooling post for supplying cold air of a cooling surface to the accommodation portion. The grain refrigerator according to claim 1 or 2, wherein the impermeable layer is formed by glazing the receiving portion and then baking. The grain refrigerator of claim 1 or 2, wherein the impermeable layer is formed of a resin. According to claim 3, Including an insulating tube installed between the cooling post and the receiving portion, Grain refrigerator, characterized in that the heater for generating heat is installed on the outer peripheral surface of the insulating tube. According to claim 3, The cooling surface is installed so that the disk-shaped support member is formed with a protruding frame protruding upward from the outer circumferential surface, the lower end of the receiving portion is seated on the outside of the protruding frame, the cooling post Grain refrigerator characterized in that installed in the center of the support member. According to claim 1 or 2, wherein the inside of the housing is provided with a through hole for discharging the stored grain and the through hole through which the receiving portion is formed, the upper end of the receiving portion protrudes on the upper portion of the diaphragm, The lower end of the receiving portion is grain freezer, characterized in that is installed to protrude to the bottom of the diaphragm. The grain refrigerator of claim 6, wherein the heating and stopping of the heater are performed by a program stored in a control unit.

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