KR102293188B1 - Refrigerator for grain - Google Patents

Abstract

The present invention relates to a grain refrigerator. The disclosed grain refrigerator comprises: a main body including an outer case to form an external shape, a horizontal bulkhead dividing the inside of the outer case up and down, an inner case formed on an upper part of the bulkhead to form a hopper-shaped rice storage room, a machine compartment formed on a lower side of the bulkhead, and a control unit; a cover which is pivotably mounted on an upper surface rear end portion of the main body through a hinge and selectively opens and closes a rice storage compartment; a cooling means including a first thermoelectric element which is accommodated in the rice storage compartment and provides a cold air to an outer part of accommodated and stored rice, a second thermoelectric element providing the cold air to an inner part of the rice stored in the rice storage compartment, and a heat sink; and a withdrawal means for withdrawing the rice stored in the rice storage compartment in a form of whole grains or partially crushed or powdered form. One object of the present invention is to provide the grain refrigerator, capable of controlling and maintaining a temperature and a humidity in the rice storage compartment in an optimal preservation environment.

Description

Grain Refrigerator {REFRIGERATOR FOR GRAIN}

The present invention (Disclosure) relates to a grain refrigerator, and more particularly, to control and maintain the temperature and humidity in the rice storage room to an optimal preservation environment to maintain the freshness of stored grains for a long time, and to store and store in the rice storage room. It relates to a grain refrigerator that allows rice to be taken out in whole grain form or in partially crushed form or in the form of powder.

Herein, background information related to the present invention is provided, which does not necessarily imply prior art (This section provides background information related to the present disclosure which is not necessarily prior art).

Among grains, when about 15 days have elapsed from the day of rice polishing, deterioration of rice begins due to external factors such as temperature and humidity. Humidity inside and outside and moisture content of 16% or more should be maintained.

However, there is a problem in that it is difficult to create the above-mentioned optimal preservation environment because ordinary households usually store and store rice using jars or plastic barrels.

Recently, in order to improve the above-mentioned problems, devices that can store and store rice at a relatively low temperature have been developed and used. 20-0481531", "Korea Patent Publication No. 10-2010-0000073", and the like.

That is, the devices disclosed in the above-mentioned Korean Utility Model Gazettes and Korean Unexamined Patent Publications allow rice to be stored and stored at a low temperature using conventional cooling devices to prevent deterioration of rice.

However, the devices disclosed in the aforementioned Korean Utility Model Gazettes and Korean Patent Publications have a problem in that the cold air of the cooling device is transmitted only to the outer part of the rice stored in the storage room and does not reach the inner part of the stored rice. As a result, there was a problem in that the quality of the rice in the outer part of the same storage room and the rice in the inner part were significantly different.

On the other hand, "Korea Patent Publication No. 10-2000-0010104" discloses a "grain storage" that allows the stored rice to be stirred by rotating a screw in the storage chamber, but it is questionable whether the stored rice can be stirred by the screw. Not only does it work, but even if it is agitated, the screw must be rotated with a strong force, so it is judged that not only noise is generated but also problems such as cracking of rice during stirring are expected.

In addition, there was a problem in that the conventional apparatus for storing and storing rice in a relatively low temperature state cannot take out the stored rice in various forms. That is, conventional devices have a problem in that rice can be withdrawn only in the form of whole grains.

Korean Utility Model Publication No. 20-0195601. Korean Utility Model Publication No. 20-0481531. Korean Patent Application Laid-Open No. 10-2010-0000073. Korean Patent Publication No. 10-2000-0010104.

An object of the present invention (Disclosure) is to provide a grain refrigerator capable of controlling and maintaining the temperature and humidity in a rice storage room in an optimal preservation environment.

An object of the present invention (Disclosure) is to provide a grain refrigerator capable of transmitting cold air to the inner portion of the stored grain without generating noise.

An object of the present invention (Disclosure) is to provide a grain refrigerator that allows the rice stored and stored in the rice storage room to be withdrawn in the form of whole grains or partially crushed or powdered form.

Herein, a general summary of the present invention is provided, which should not be construed as limiting the scope of the present invention (This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).

In order to solve the above problems, a grain refrigerator according to any one aspect of various aspects describing the present invention includes an outer case forming an outer shape, a horizontal partition wall dividing the inside of the outer case up and down, and , a main body having an inner case formed on the upper part of the bulkhead to form a hopper-shaped rice storage room, and a machine room and a control unit formed on the lower side of the bulkhead; a cover that is pivotably mounted to the upper side through a hinge on the rear end of the upper surface of the body and selectively opens and closes the rice storage compartment; A cooling means having a first thermoelectric element for providing cold air to the outer portion of the rice stored and stored in the rice storage room, and a second thermoelectric element for providing cold air to the inner portion of the rice stored and stored in the rice storage room, and a heat sink; and a withdrawal means for withdrawing the rice stored and stored in the rice storage room in the form of whole grains or partially crushed or powdered form.

In the grain refrigerator according to an aspect of the present invention, the first thermoelectric element is embedded in the first mounting space provided between the lower side of the rice storage compartment and the inner case and the partition wall, and the cooling unit of the first thermoelectric element is the rice storage compartment. Built in contact with the lower portion of the first thermoelectric element adjacent to the heat generating unit may be a built-in first blowing fan for discharging the heat of the heat generating unit to the outside.

In the grain refrigerator according to an aspect of the present invention, the second thermoelectric element is embedded in a second mounting space part penetrating vertically through the cover, and the cooling part of the second thermoelectric element is built to be exposed to the opening side of the rice storage room, , Adjacent to the heating part of the second thermoelectric element, a second blowing fan for discharging the heat of the heating part to the outside is built-in, and a plurality of exhaust holes connecting the second blowing fan and the upper part of the rice storage chamber may be formed in the cover. .

In a grain refrigerator according to an aspect of the present invention, the heat sink includes: a top plate having a horizontal disk shape facing the cooling unit of the second thermoelectric element; a plurality of horizontal heat transfer rods extending radially outwardly of the top plate on the outer circumferential surface of the top plate; and a plurality of vertical heat transfer rods mounted on each of the horizontal heat transfer rods and vertically extending toward a lower side of the horizontal heat transfer rod.

In the grain refrigerator according to an aspect of the present invention, a sharp tip is formed at the lower end of each vertical heat transfer rod, and a plurality of heat radiation fins are integrally formed on each vertical heat transfer rod, and the radiation fins are "< It may be formed to protrude from the vertical heat transfer rod in a " or ">" shape.

In the grain refrigerator according to an aspect of the present invention, the take-out means includes: a fixed grinding roll and a movable grinding roll that are rotatably disposed in a machine room and selectively open and close an outlet extending from the rice storage room to the machine room side; an opening/closing drive motor for moving the movable grinding roll to open and close the outlet; and a grinding drive motor that rotates the fixed grinding roll to grind the extracted rice into a partially crushed form or a powder form.

According to the present invention, since it is possible to control and maintain the temperature and humidity in the rice storage room to an optimal preservation environment, it is possible to prevent deterioration of the stored rice, thereby providing the effect of keeping the rice fresh for a long time. there will be

In addition, according to the present invention, since cold air is transmitted to the inner part of the stored rice by the heat sink, it is possible to minimize (heat balance) the temperature difference between the outer part and the inner part of the stored rice without generating noise, and thereby the stored rice It is possible to provide the effect of maintaining the same quality of the outer part and the inner part of the

In addition, according to the present invention, it is possible to provide the effect of allowing the rice stored and stored in the rice storage room to be withdrawn in the form of whole grains, partially crushed or powdered form by the selective operation of the withdrawal means.

1 is an exploded perspective view showing a grain refrigerator according to the present invention.
Figure 2 is an enlarged longitudinal cross-sectional view showing the use state of the grain refrigerator according to the present invention.
Figure 3 is a view schematically showing the withdrawal means shown in Figure 2;

Hereinafter, an embodiment of a grain refrigerator according to the present invention will be described in detail with reference to the drawings.

However, the intrinsic technical idea of the present invention cannot be said to be limited by the embodiments described below, and the following by those skilled in the art based on the intrinsic technical idea of the present invention It is revealed that the range that can be easily suggested as a method of substitution or change of the embodiment described in is included.

In addition, since the terms used below are selected for convenience of explanation, in grasping the intrinsic technical idea of the present invention, they are not limited to the dictionary meaning and are appropriately interpreted as meanings consistent with the technical spirit of the present invention. it should be

1 to 3 are views showing a grain refrigerator according to the present invention. The grain refrigerator 100 according to the present invention includes a main body 110 , a cover 130 , a cooling unit 140 , and a withdrawal unit 160 . do.

First, the main body 110 includes an outer case 112 that forms the overall appearance of the grain refrigerator 100 according to the present invention, and an inner case that forms a hopper-shaped rice storage compartment 116 inside the outer case 112 ( 114).

In addition, the main body 110 further includes a machine room 115 formed on the lower side of the rice storage room (116). At this time, the rice storage room 116 and the machine room 115 are provided by being divided by the horizontal partition wall 113 .

That is, the rice storage room 116 is provided on the upper side of the partition wall 113 and the machine room 115 is provided on the lower side of the partition wall 113 .

And on one side of the machine room 115, that is, on the lower front side of the outer case 112, the rice (R) stored and stored in the rice storage room 116 is contained and the withdrawal box 117, which is drawn out, can enter and exit the doorway 119. is formed, and in the lower portion of the rice storage chamber 116, a withdrawal port 116a extending to the upper side of the withdrawal box 117 through the partition wall 113 is formed.

Here, the space formed when the outer case 112 and the inner case 114 are combined and the space between the partition wall 113 and the inner case 114, that is, the space between the partition wall 113 and the lower portion of the rice storage chamber 116, has a rice storage compartment 116. ) and a heat insulating material (T) that blocks heat transfer to the outside is built-in, and preferably, a foamable material having excellent workability and heat insulating properties is used as the heat insulating material (T).

Although only one rice storage compartment 116 is shown in FIGS. 1 and 2 , anyone will know that another rice storage compartment 116 may be provided in the main body 110 .

Meanwhile, the control unit 120 is mounted on the front surface of the outer case 112 to control the overall operation of the grain refrigerator 100 according to the present invention.

The control unit 120 includes a display for displaying the operating state and the temperature and humidity in the rice storage compartment 116 , and various operation buttons for selecting and controlling functions for the operation of the grain refrigerator 100 . In addition, the control unit 120 further includes a sensor (not shown) for sensing the temperature and humidity of the rice storage compartment 116 .

And the control unit 120 in the present invention is particularly so that the optimal preservation environment of the rice (R) stored and stored in the rice storage room 116, that is, a temperature of 13 to 18 ° C, a humidity of about 65%, and a moisture content of 16% or more are maintained. The cooling means 140 is controlled.

In addition, the control unit 120 in the present invention enables the rice (R) stored and stored in the rice storage room 116 to be automatically withdrawn, but the rice (R) is in the form of whole grains or partially crushed or powdered form. The withdrawal means 160 is controlled to be withdrawn.

Control and operation of the control unit 120 as described above is a well-known technique in the technical field to which the present invention pertains, so a detailed description thereof will be omitted. And the function and action of the control means 120 is not limited to the above-mentioned functions and actions, anyone will know that more can be added.

The cover 130 is pivotably mounted to the upper side via a hinge on the rear end of the upper surface of the body 110 . The rice storage compartment 116 is selectively opened and closed according to the turning operation of the cover 130 .

That is, when the cover 130 is rotated toward the upper side of the upper surface of the main body 110, the opening of the rice storage chamber 116 is opened, and, conversely, when the cover 130 is rotated toward the upper surface of the main body 110, the rice storage chamber 116 is is closed

Here, the connection relationship between the cover 130 and the body 110, which are connected via a hinge, is a well-known technique, and thus a detailed description thereof will be omitted.

And on the lower surface of the cover 130 facing the opening of the rice storage room 116, the cover packing 132 is mounted. The cover packing 132 closes the rice storage chamber 116 by contacting the upper surface of the main body 110 when the cover 130 closes the rice storage chamber 116 .

The cover packing 132 has elasticity and is formed of a material such as rubber or silicone that can maintain airtightness.

The cooling means 140 enables the stored and stored rice (R) in the rice storage room 116 to be stored and stored in an optimal preservation environment.

The cooling means 140 is a first thermoelectric element 142 that provides cold air to the outside of the rice (R) stored and stored in the rice storage room 116 and the inside of the rice (R) stored and stored in the rice storage room 116 . It includes a second thermoelectric element 146 and a heat sink 150 for providing cool air to the part.

The first thermoelectric element 142 is disposed on the lower side of the rice storage chamber 116 as shown.

To this end, on the lower side of the rice storage compartment 116 , a first mounting space S1 is provided between the inner case 114 and the partition wall 113 . At this time, the first mounting space (S1) forms an opening toward the partition wall (113).

The first thermoelectric element 142 is embedded in the first mounting space S1 as described above, and the first thermoelectric element 142 is embedded so that the cooling unit is in contact with the lower portion of the rice storage chamber 116, and the first Adjacent to the heating part of the thermoelectric element 142, a first blowing fan 144 for discharging the heat of the heating part to the outside is built-in.

That is, the cold air of the cooling unit of the first thermoelectric element 142 is transferred to the bottom and the side connected to the bottom of the rice storage room 116 to cool the outer part of the rice (R) stored and stored in the rice storage room 116, The heat of the heating part of the first thermoelectric element 142 is discharged to the outside of the opening of the first mounting space S1 by the first blowing fan 144 .

Here, the inner case 114 forming the rice storage compartment 116 is made of a metal material so that the cold air of the first thermoelectric element 142 can be quickly transferred to the rice R stored in the rice storage compartment 116 . can be made with

The second thermoelectric element 146 is disposed on the cover 130 as shown, and the heat sink 150 receives the rice R through the opening of the rice storage chamber 116 to face the second thermoelectric element 146 . It is disposed to be inserted into the stored stored rice storage chamber (116).

The second thermoelectric element 146 is embedded in the second mounting space S2 vertically penetrating the cover 130 as shown. At this time, the cooling part of the second thermoelectric element 146 is built to be exposed toward the opening of the rice storage chamber 116 , and a second blower for discharging the heat of the heating part to the outside adjacent to the heating part of the second thermoelectric element 146 . A fan 148 is incorporated.

That is, the cold air of the cooling part of the second thermoelectric element 146 is transferred to the opening side of the rice storage chamber 116 and simultaneously transferred to the heat sink 150 side, and the heat of the heating part of the second thermoelectric element 146 is transferred to the second blowing fan. It is discharged to the outside of the cover 130 by the (148).

On the other hand, a plurality of exhaust holes 134 connecting the second blowing fan 148 and the upper portion of the rice storage chamber 116 are formed in the cover 130 . Air and moisture stagnated between the cover 130 and the rice storage chamber 116 are discharged to the outside through the exhaust hole 134 by the operation of the second blowing fan 148 .

The heat sink 150 is formed of a metal material having high thermal conductivity so that the cold air of the second thermoelectric element 146 can be quickly transferred to the inner portion of the rice R stored in the rice storage room 116 .

As shown, the heat sink 150 includes a top plate 152 having a horizontal disk shape facing the cooling unit of the second thermoelectric element 146 , and radially of the top plate 152 on the outer circumferential surface of the top plate 152 . a plurality of outwardly extending horizontal heat transfer rods 154 and one or more mounted on each horizontal heat transfer rod 154 and a plurality of vertical heat transfer rods 156 extending vertically to a lower side of the horizontal heat transfer rod 154; .

At this time, a sharp tip 158 is formed at the lower end of each vertical heat transfer rod 156 to facilitate insertion of the vertical heat transfer rods 156 into the rice storage chamber 116 in which the rice (R) is stored.

And a plurality of heat radiation fins 159 are integrally formed on each vertical heat transfer rod 156 .

These heat radiation fins 159 make it possible to widen the transfer area of cold air transferred through the vertical heat transfer rod 156, and the heat radiation fins 159 are stored in the rice storage room 116 in which the rice (R) is stored. It is formed to facilitate insertion and withdrawal of

To this end, the heat radiation fins 159 protrude from the vertical heat transfer rod 156 in an approximately "<" or ">" shape when the heat sink 150 is viewed from the front, but the protrusion lengths may be different from each other. .

That is, the cold air of the second thermoelectric element 146 transferred to the top plate 152 is transferred to each horizontal heat transfer rod 154 through the top plate 152 , and is transferred to each horizontal heat transfer rod 154 . The cold air is again transferred to each of the vertical heat transfer rods 156 and the heat radiation fins 159 , and the cold air transferred to the vertical heat transfer rods 156 and the heat radiation fins 159 in this way is the inside of the rice storage room 116 . Delivered to the stored rice (R) in portions.

The withdrawal means 160 is disposed between the take-out port 116a and the take-out box 117 in the machine room 115 to allow the rice (R) to be withdrawn in the form of whole grains or partially crushed or powdered form.

The withdrawal means 160 is rotatably disposed in the machine room 115 and includes a fixed crushing roll 162 and a movable crushing roll 164 that selectively open and close the extraction port 116a, and a movable crushing device such that the extraction port 116a is opened and closed. and an opening/closing driving motor 166 for moving the roll 164 .

In addition, the withdrawing means 160 further includes a grinding drive motor 168 for rotating the fixed grinding roll 162 to grind the rice (R) withdrawn in a partially crushed form or a powder form.

That is, the take-out means 160 closes the withdrawal port 116a as the fixed grinding roll 162 and the movable grinding roll 164 are in close contact with each other, and the opening/closing drive motor 166 fixes the movable grinding roll 164 for fixed grinding. The rice (R) stored and stored in the rice storage chamber 116 by being spaced apart from the roll 162 is withdrawn.

And the grinding drive motor 168 selectively rotates the fixed grinding roll 162 to grind the rice (R) passing between the fixed grinding roll 162 and the movable grinding roll 164 into a partially crushed form and a powder form. make it

At this time, the operation of the withdrawal means 160 may be operated by the operation of a withdrawal operation button (not shown) provided separately in the control unit 120, for example, when any one withdrawal operation button is operated, the control unit 120 may This is output as a signal to the opening/closing driving motor 166, and the opening/closing driving motor 166 moves the movable grinding roll 164 completely apart from the fixed grinding roll 162 so that the whole grains of rice are taken out. And when the first pull-out operation button is operated once again, the opening/closing driving motor 166 moves the movable grinding roll 164 in close contact with the fixed grinding roll 162 so that the withdrawal port 116a is closed.

For example, when operating another withdrawal operation button, the control unit 120 outputs it as a signal to the opening/closing driving motor 166 and the grinding driving motor 168 side, and the opening/closing driving motor 166 is partially crushed rice (R). The movable grinding roll 164 is moved apart from the fixed grinding roll 162 so as to be drawn out, and the grinding driving motor 168 drives the fixed grinding roll 162 so that a part of the rice (R) is crushed.

That is, the rice (R) drawn out from the outlet (116a) passes between the rotating fixed grinding roll 162 and the movable grinding roll 164, and the rice (R) is partially crushed and taken out.

And when another pull-out operation button is operated once again, the driving of the grinding drive motor 168 is stopped and the opening/closing driving motor 166 closely attaches the movable grinding roll 164 to the fixed grinding roll 162 so that the withdrawal port 116a is closed. move it very

For example, when another pull-out operation button is operated, the control unit 120 outputs it as a signal to the opening/closing driving motor 166 and the grinding driving motor 168. The movable grinding roll 164 is moved apart from the fixed grinding roll 162 so as to be drawn out, and the grinding driving motor 168 drives the fixed grinding roll 162 to be in the form of a powder of rice (R).

That is, the rice R drawn out from the outlet 116a passes between the rotating fixed grinding roll 162 and the movable grinding roll 164 while the rice R is crushed in the form of powder.

And when another pull-out operation button is operated once again, the driving of the grinding drive motor 168 is stopped and the opening/closing driving motor 166 moves the movable grinding roll 164 to the fixed grinding roll 162 so that the withdrawal port 116a is closed. move closely.

Here, it is a known technique to rotatably support the fixed grinding roll 162 and the movable grinding roll 164 in the machine room 115 and to move the movable grinding roll 164 using the opening/closing driving motor 166. A detailed description thereof will be omitted.

Hereinafter, the state of use of the grain refrigerator 100 formed as described above will be briefly described.

In order to use the grain refrigerator 100 according to the present invention, the lid 130 is opened to expose the opening of the rice storage compartment 116 , and then the rice (R) to be stored is stored in the rice storage compartment through the opening of the rice storage compartment 116 . (116) accommodated in.

When the rice (R) is accommodated into the rice storage chamber 116, then the heat sink 150 is inserted into the rice storage chamber 118 in which the rice (R) is accommodated, that is, the rice (R) is stored and stored.

At this time, the heat sink 150 exposes the top plate 152 and the horizontal heat transfer rods 154 to the upper side of the rice R contained in the storage container 118 while at the same time exposing the tips 158 of the vertical heat transfer rods 156 . ) is inserted so as to contact the bottom of the rice storage compartment (116).

That is, the rice (R) contained in the rice storage chamber 116 is preferably accommodated in the rice storage chamber 116 lower than the length of the height of the heat sink 150 .

As described above, when the heat sink 150 is inserted into the rice storage chamber 116 in which the rice (R) is accommodated and stored, the control unit 120 under a state in which the opening of the rice storage chamber 116 is closed by closing the cover 130 . ) to operate the cooling means 140 .

When the cooling means 140 is operated, cold air is radiated from the cooling unit of the first and second thermoelectric elements 142 and 146 . At this time, the cold air radiated from the first thermoelectric element 142 is the bottom of the rice storage chamber 116 . And it is transferred to the side of the rice storage room 116 through the side connected to the bottom to cool the outer part of the rice (R) stored and stored in the rice storage room (116).

And the cold air radiated from the second thermoelectric element 146 is transferred to each of the horizontal heat transfer rods 154 through the opening and the top plate 152 of the rice storage chamber 116, and is transferred to each of the horizontal heat transfer rods 154. The cooled air is again transferred to each of the vertical heat transfer rods 156 and heat radiation fins 159 , and the cold air transferred to the vertical heat transfer rods 156 and heat radiation fins 159 in this way is in the rice storage room 116 . Cool the inner part of the stored rice (R).

That is, the cooling means 140 operates the first and second thermoelectric elements 142 and 146 so that the outer part and the inner part of the rice (R) stored in the rice storage chamber 116 can achieve thermal balance. , and at the same time, the rice (R) stored and stored in the rice storage room 116 can be stored and stored for a long time in this state.

And the rice (R) stored and stored in the rice storage room 116 is withdrawn in the form of whole grains or partially crushed or powdered form as described above by the selective operation of the withdrawal means 160 .

Since the grain refrigerator 100 according to the present invention formed in this way can control and maintain the temperature and humidity in the rice storage room 116 to an optimal preservation environment, it is possible to prevent deterioration of stored grains, that is, rice (R), This allows the rice (R) to be stored and stored fresh for a long time.

In addition, in the grain refrigerator 100 according to the present invention, since cold air is transferred to the inner portion of the stored rice (R) by the heat sink 150, the temperature difference between the outer portion and the inner portion of the stored rice (R) without generating noise. can be minimized (thermal balance), thereby making it possible to maintain the same quality of the outer part and the inner part of the stored rice (R).

In addition, the grain refrigerator 100 according to the present invention converts the stored and stored rice (R) in the rice storage compartment 116 in the form of whole grains, partially crushed or powdered form by the selective operation of the withdrawal means 160 . allow it to be withdrawn.

In the foregoing, specific embodiments of the present invention have been described and illustrated, but it is common knowledge in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Accordingly, such modifications or variations should not be individually understood from the technical spirit or point of view of the present invention, and modified embodiments should be said to belong to the claims of the present invention.

Claims (6)

An outer case forming an outer shape, a horizontal partition wall dividing the inside of the outer case up and down, an inner case forming a hopper-shaped rice storage room formed on the upper portion of the partition wall, and formed on the lower side of the partition wall a main body having a machine room and a control unit;
a cover that is pivotably mounted to the upper side through a hinge at the rear end of the upper surface of the main body and selectively opens and closes the rice storage compartment;
A first thermoelectric element for providing cold air to the outer part of the rice stored and stored in the rice storage room, and a second thermoelectric element for providing cold air to the inner part of the rice stored and stored in the rice storage room, and the rice is stored and stored. a cooling means having a heat sink inserted into the rice storage chamber to transfer the cold air of the second thermoelectric element to the inner portion of the rice stored and stored in the rice storage chamber; and
and a withdrawal means for withdrawing the rice stored and stored in the rice storage room in the form of whole grains or partially crushed or powdered form;
The second thermoelectric element is embedded in a second mounting space penetrating vertically through the cover, and the cooling part of the second thermoelectric element is embedded to be exposed toward the opening of the rice storage compartment, and the heat generating part of the second thermoelectric element is embedded. A second blowing fan for discharging the heat of the heat generating unit to the outside is built adjacently, and a plurality of exhaust holes connecting the second blowing fan and the upper part of the rice storage chamber are formed in the cover,
The heat sink is
a top plate having a horizontal disk shape facing the cooling unit of the second thermoelectric element; a plurality of horizontal heat transfer rods extending radially outwardly of the top plate on an outer circumferential surface of the top plate; and a plurality of vertical heat transfer rods mounted on each of the horizontal heat transfer rods and vertically extending to a lower side of the horizontal heat transfer rod.
A sharp tip is formed at a lower end of each of the vertical heat transfer rods, and a plurality of heat radiation fins are integrally formed on each of the vertical heat transfer rods, and the radiation fins are formed in a "<" or ">" shape for the vertical heat transfer. Grain refrigerator formed to protrude from the rod.
The method according to claim 1,
The first thermoelectric element is embedded in a first mounting space provided between the lower side of the rice storage compartment and the inner case and the partition wall,
The cooling unit of the first thermoelectric element is built in contact with the lower portion of the rice storage chamber, and adjacent to the heating unit of the first thermoelectric element is a grain refrigerator having a built-in first blowing fan for discharging the heat of the heating unit to the outside. .
delete delete delete The method according to claim 1,
The withdrawal means is
a fixed grinding roll and a movable grinding roll which are rotatably disposed in the machine room and selectively open and close an outlet extending from the rice storage room toward the machine room;
an opening/closing driving motor for moving the movable grinding roll to open and close the outlet; and
Grain refrigerator comprising a; a grinding drive motor for rotating the fixed grinding roll to grind the extracted rice into a partially crushed form or a powder form.

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