KR101861673B1 - A refrigerator comprising a sub-storage chamber and a cooling device - Google Patents

Abstract

An object of the present invention is to provide a refrigerator in which the storage temperature of a specific storage room in a refrigerator can be lowered rapidly while keeping the storage temperature of the specific storage room significantly lower than that of other storage rooms.
This object is achieved by a refrigerator comprising: a main body having a storage chamber and a cold air generating chamber; An auxiliary storage chamber which is provided inside the storage chamber to be partitioned from the storage chamber and whose internal temperature can be lower than the temperature of the storage chamber; and an auxiliary storage chamber which is provided inside or outside the auxiliary storage chamber, A cooler for generating cool air to be supplied to the auxiliary storage room so as to be formed at a low temperature; And a cool air inlet provided between the auxiliary storage room and the cool air generation room for guiding air in the cool air generation room into the auxiliary storage room.

Description

[0001] The present invention relates to a refrigerator having a cooling device and an auxiliary storage room,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a refrigerator, and more particularly, to a refrigerator capable of keeping a storage temperature remarkably low using a thermoelectric element.

A refrigerator is a product that can store refrigerated or refrigerated food and other storage by using a refrigerant cycle.

A conventional refrigerator includes a main body having a storage chamber, a compressor provided in the main body for compressing the refrigerant, a condenser for condensing the refrigerant, an expansion valve, an evaporator, and the like.

The cold air generated in the evaporator flows into the storage compartment to store the refrigerated food or the frozen food. The main body is provided with a door for opening and closing the storage compartment.

In a conventional storage room, a storage space such as a shelf and a drawer is provided. Recently, a special storage room has been provided with a special room or a quench room so that the storage temperature of a specific storage is lower than the storage temperature of a common storage room .

In the case of such a special room or a quench chamber, the cold air of the evaporator is introduced using a separate air blowing structure, but the lower limit of the temperature of the cold air of the evaporator is not lowered as required by the market, There was a problem.

On the other hand, as disclosed in Korean Patent Laid-Open No. 10-2010-0121334, a method of lowering the storage temperature while implementing a miniaturization of a refrigerator by applying a thermoelectric element to the refrigerator has been proposed. However, even in this case, , There is a problem that it takes much time to satisfy the temperature.

The object of the present invention is to provide a refrigerator capable of rapidly lowering the temperature of a specific storage room in a refrigerator while keeping the storage temperature of the specific storage room significantly lower than that of other storage rooms. have.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, An auxiliary storage chamber which is provided inside the storage chamber to be partitioned from the storage chamber and whose internal temperature can be lower than the temperature of the storage chamber; and an auxiliary storage chamber which is provided inside or outside the auxiliary storage chamber, A cooler for generating cool air to be supplied to the auxiliary storage room so as to be formed at a low temperature; And a cool air inlet provided between the auxiliary storage room and the cool air generation room for guiding air in the cool air generation room into the auxiliary storage room.

Further comprising a partition wall partitioning the cold air generating chamber from the auxiliary storage room,

And the cold air inlet port is provided in the partition wall.

And the cool air inlet port is installed at the upper part of the cooling device so that the temperature of the cooler generating chamber around the cool air inlet port is lower than the temperature of the cooler generating room around the cooling device.

And the cold air inlet is spaced apart from the cooling device.

The cooling device includes a thermoelectric element that is disposed in the partition wall and includes a heat dissipation unit and a cooling unit, a heat dissipation member that is provided in the heat dissipation unit of the thermoelectric device and radiates heat of the thermoelectric device toward the cool- And a cooling member provided in the cooling part of the device for cooling the air passing through the cool air inlet port and moving toward the auxiliary storage room.

And a guide passage provided between the cool air inlet and the auxiliary storage room for guiding the movement of air from the cool air inlet toward the auxiliary storage room.

And the cooling member is disposed inside the guide passage.

And a blowing fan unit provided in the guide unit and guiding air passing through the cooling member into the auxiliary storage room.

And a cooling air discharge port for guiding the air in the guide passage to be discharged to the auxiliary storage room, wherein the blowing fan unit is provided adjacent to the cold air discharge opening, and the cooling member is provided adjacent to the cold air inlet do.

And the heat dissipating member is mounted on the evaporator.

The heat radiating member is mounted on a lower portion of the evaporator, and the cool air inlet is disposed adjacent to a position spaced apart from the lower portion of the evaporator by a predetermined distance.

And an area of at least one of the cooling member and the heat radiation member is larger than an area of the thermoelectric element.

And the auxiliary storage room is composed of a drawer which is slidably removably inserted into the storage room.

And a recovery unit provided between the auxiliary storage unit and the cool air generation room for recovering the cool air in the auxiliary storage room to the cool air generation room.

In this way, by the operation of the present invention, the cool air can circulate in the auxiliary storage room and the cool-gas generating chamber in a state of being communicated with the inside of the auxiliary storage chamber and the cool-gas generation chamber.

Thus, it is possible to cool the inside of the auxiliary storage room to a cryogenic temperature, and to induce the cooling to be performed quickly.

Particularly, since the heat radiating member connected to the heat radiating portion of the thermoelectric element exerts heat radiation function with respect to the cool air generating chamber and the evaporator, the temperature of the cooling member connected to the cooling portion of the thermoelectric element is significantly lower Can be implemented.

The cooling device provided separately from the evaporator can secondarily cool the air that has been primarily cooled in the evaporator, so that the cooling rate can be remarkably increased and the cooling temperature can be remarkably lowered.

The cooling device is connected to the lower end of the evaporator so as to minimize the influence on the heat conduction performance of the evaporator and the cool air inlet is disposed on the upper part of the cooling device so as to correspond to the lowest temperature portion of the evaporator, The effect can be maximized.

Therefore, there is a convenience in that it is possible to store a storage material which needs to be quenched or stored at a very low temperature.

Furthermore, by using the heat radiating member and the cooling member having a larger area than the thermoelectric element, it is possible to maximize the cooling effect on the inside of the auxiliary storage room and the heat radiating effect on the cold air generating room and the evaporator.

1 is a side sectional view of a refrigerator according to the present invention.
2 is a side cross-sectional view of the auxiliary storage of the present invention.
3 is an exploded perspective view of the auxiliary storage and cooling device of the present invention.
4 and 5 are perspective views showing various configurations of the cooling device and the guide portion of the present invention.
6 is a side sectional view showing the operation of the present invention.

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

As shown in FIG. 1, the refrigerator according to the present invention includes a main body 1 having a storage chamber, and a cool air generating chamber 3 provided behind the storage chamber 2.

The cool air generation room (3) and the storage room (2) are partitioned by a partition wall (4).

The cool air generating chamber 3 is provided with an evaporator 31 and a cool air fan 32 for moving the cool air generated in the evaporator 31 to the storage chamber.

In the storage room 2, a shelf 21 capable of storing a predetermined storage and an auxiliary storage room 200 provided under the shelf are provided.

The auxiliary storage 200 may be partitioned from the storage 2 and the internal temperature of the auxiliary storage 200 may be kept significantly lower than the storage.

That is, when the storage chamber 2 constitutes a freezing chamber and its internal temperature is maintained at about -18 to -20 ° C, the temperature of the auxiliary storage chamber 200 is maintained at about -50 to -60 ° C.

A cooling device 300 provided separately from the evaporator 31 provided in the cool air generating chamber 3 is disposed in the auxiliary storage 200 so that the temperature of the auxiliary storage 200 may be extremely low.

The auxiliary storage chamber 200 and the cool air generation chamber 3 are communicable by the guide portion 5 and the recovery portion 6.

The guide part 5 is provided in the shape of a duct or a channel and serves to guide the cool air of the cool air generation chamber 3 to the auxiliary storage 200. The recovery part 6 is also provided in the form of a duct or a flow path And serves to recover the cool air in the cool air generation chamber 200 to the cool air generation chamber 3.

The cooling device 300 is disposed through the partition wall 4 and has one end disposed inside the guide portion 5 and the other end connected to the evaporator 31.

The cooling device 300 is connected to the lower end of the evaporator 31 to minimize the influence on the heat transfer performance of the evaporator 31 itself.

As described later, the cooling device 300 includes the thermoelectric element 310 to perform an endothermic or cooling action with respect to the auxiliary storage 200, and with respect to the evaporator 3 and the cool air generation chamber 3, Heat dissipation.

And the temperature of the heat absorbing portion or the cooling portion is lowered as the temperature of the heat dissipating portion of the thermoelectric element 310 is lowered.

That is, in order to maintain the temperature of the auxiliary storage chamber 200 at a cryogenic temperature, the temperature near the heat dissipating unit is about -30 ° C, and the temperature near the heat absorbing unit or the cooling unit is about -60 ° C .

A blowing fan unit 350 is provided in the guide part 5 so that cool air of the cool air generating chamber 3 flows into the guide part 5 and is cooled after passing through the cooling device 300, To be discharged into the auxiliary storage chamber (200).

For this purpose, it is preferable that the blowing fan unit 350 is provided adjacent to the cold air discharge port (refer to FIG. 2) of the guide unit 5.

The auxiliary storage 200 may include a housing 210 provided in the storage chamber 2 and a drawer 220 slidably mounted on the housing 210. However, .

2, one side of the cooling device 300 is protruded in the guide part 5 with the partition wall 4 as a center, and the other side of the cooling device 300 is connected to the evaporator 31 .

The cooling device 300 includes a thermoelectric element 310 having a heat dissipation part and a heat absorption part (cooling part), a mounting member 320 on which the thermoelectric element 310 is mounted and fixed, A cooling member 330 provided to be in contact with the heat absorbing portion (cooling portion), and a heat dissipating member 340 provided to face the heat dissipating portion of the thermoelectric device 310 and connected to the evaporator 31.

The cooling member 330 protrudes into the guide portion 5 and the radiating member 340 protrudes toward the evaporator 31 of the cool air generating chamber 3 And is connected to the evaporator 31.

However, it is also possible that the heat radiating member 340 is not connected to the evaporator 31 but may protrude toward the cool air generating chamber 3 to be heat-exchanged with the air inside the cool air generating chamber 3.

The guide portion 5 is provided to communicate the cool air inlet 51 provided in the partition wall 4 with the drawer 220.

The cool air inlet 51 is preferably disposed at a portion corresponding to the lowest temperature of the evaporator 31.

The guide portion 5 includes a rib 55 protruding forward from the partition wall 4 and a guide passage 54 for guiding the cool air together with the rib 55 disposed on the front surface of the rib 55. [ As shown in Fig.

A cool air discharge duct 57 protruding into the drawer 220 is provided in the lower portion of the guide unit 5 and the cool air discharge port 52 is provided in the cool air discharge duct 57, A blowing fan unit 350 is provided.

The open / close device 53 selectively opens / closes the cool air discharge port 52 to open / close the cool air discharge port 52 of the cool air generation chamber 3, To the inside of the auxiliary storage room 200. [0050]

A driving device (not shown) such as a driving motor may be connected to the opening / closing device 53. The driving device (not shown) may be connected to the opening / closing device 53 under the control of a control part (not shown) .

The cooling member 330 is disposed to protrude from the guide passage 54.

The cooling member 330 protrudes on the guide passage 54 so that the air moving from the cold air inlet port 51 to the cold air outlet port 52 by the operation of the blowing fan unit 350 Can be discharged to the drawer 220 after being cooled while passing through the cooling member 330.

The temperature of the cooling member 330 is influenced by the cooling part of the thermoelectric element 310 to be about -60 ° C. If the air temperature inside the cold air generating chamber 3 is about -20 to 25 ° C., The temperature of the air that is heat-exchanged with the cooling member 330 can be maintained at about the same level.

Accordingly, when the rapidly cooled air flows into the drawer 220, the temperature of the air inside the drawer 220 can be maintained at -50 to -60 ° C.

On the other hand, the collection part 6 is provided separately from the guide part 5 and arranged in the form of a duct. The recovery unit 6 communicates the cool air generation chamber 3 with the inside of the auxiliary storage unit 200, specifically, the drawer 220.

The recovery unit 6 includes a recovery duct 67 and the recovery duct 67 is provided with a recovery inlet 61 and a recovery and discharge outlet 62. On the other hand, the recycling inlet 61 is provided with an opening / closing device 63.

The opening and closing device 63 is provided in the form of a shutter or a damper so as to open or close the recycling inlet 61 to maintain or release the communication between the inside of the drawer 220 and the inside of the cold generating chamber 3.

The opening / closing device 63 is provided with a driving device (not shown) such as a driving motor, and the driving device may be connected to a control unit (not shown) of the refrigerator.

On the other hand, the opening / closing device 63 may be disposed not in the recovery inlet 61 but also in the recovery opening 62.

3 shows the structures of the auxiliary storage unit 200, the guide unit 5, the collection unit 6, and the cooling device 300. As shown in FIG.

The auxiliary storage 200 includes a housing 210 which is installed in the storage room 2 (refer to FIG. 2) and is partitioned from the internal space of the storage room 2, (Not shown).

A roller 211 is provided in the housing 220 and guide rails 222 are provided on both sides of the drawer 210 to guide the sliding movement of the drawer 220 in contact with the roller 211 .

The position of the guide rail 222 and the roller 211 may be changed with each other and any member capable of guiding slide movement in addition to the guide rail 222 and the roller 211 may be applied to the present invention .

The front and rear sides of the housing 210 are preferably open.

The rear of the housing 210 may be coupled to the front of the partition wall 4 and the front of the housing 210 may be opened or closed by the front of the drawer 220.

The drawer 220 is provided with a handle 221 which can be held by the user and the guide unit 5 and the collecting unit 6 are inserted into the rear surface of the drawer 220 Through holes 223 and 224 are provided.

The first through hole 223 is formed to correspond to the shape of the cold air discharge duct 57 provided in the guide portion 5 and the second through hole 224 is configured to constitute the collection portion 6 And the cooling air is supplied to the cooling air recovery duct 67. [

The cool air discharge duct 57 and the cool air recovery duct 67 are inserted into the first and second through holes 223 and 224 when the drawer 220 is accommodated in the housing 210. [

Therefore, collision or interference between the drawer 220 and the cold air discharge duct 57 and the cold air recovery duct 67 can be prevented.

The guide portion 5 is constituted by the cover 56, the rib 55 and the guide passage 54 surrounded by the rib 55.

The cool air inlet 51 is provided in the partition wall 4 and the guide passage 54 is provided below the cool air inlet 51. The coolant is provided in the guide passage 54 do.

The guide passage 54 and the cold air inlet 51 are arranged to be surrounded by the rib 55. The cover 56 is disposed at the front edge of the rib 55 to guide the guide passage 54 Cover.

It is preferable that the width of the cool air inlet 51 is larger than that of the guide passage 54 in order to increase the amount of cool air introduced through the cool air inlet 51.

The cool air inlet port 51 is disposed above the guide passage 54 and is disposed above the cooling device 300.

The air that is cooled by the evaporator 31 and flows inside the cool air generation chamber 3 moves from the lower part to the upper part. As the degree of cooling becomes larger as the number of the evaporator 31 increases, Is lower than the temperature of the coarse air around the lower portion of the evaporator (31).

Since the heat dissipating member 340 of the cooling device 300 is mounted on the lower portion of the evaporator 31, the cool air around the upper portion of the evaporator 31 can be introduced into the cool air inlet 51 The cool air inlet 51 is positioned above the cooling device 300. [

The guide passage 54 and the cooling device 300 are disposed below the cool air inlet port 51 so that air having passed through the cool air inlet port 51 flows downward along the guide passage 54 So that it can meet the cooling member 330 of the cooling device 300 to be further cooled.

The air cooled by the cooling member 330 is first cooled by the evaporator 31 and then cooled by the blowing fan unit 350 provided in the cooling air discharge duct 57 To the inside of the drawer 220.

The blowing fan unit 350 includes a fan housing 351 having a fan motor (not shown) and a blowing fan 352 rotatably mounted on the fan housing 351.

An opening 41 through which the cooling device 300 can be mounted is provided on the lower rear wall of the guide passage 54. The opening 41 is disposed in the partition wall 4 and is disposed on the guide passage 54.

The opening 41 may be formed to have a size corresponding to the size of the cooling device 300.

The cooling device 300 includes a thermoelectric element 310 mounted on the cooling member 330, the mounting member 320 and the mounting member 320 and the heat radiating member 340.

The cooling member 330 is attached to the front surface or one surface of the mounting member 320 and the thermoelectric element 310 and the heat radiating member 340 is attached to the rear surface of the mounting member 320 and the thermoelectric element 310 Or other surface.

The cooling member 330 is protruded to the inside of the guide passage 54 and the radiating member 340 is protruded toward the cool air generating chamber 3 as described above.

The outer rim of the mounting member 320 is fitted into the inner rim of the opening 41 provided in the partition wall 4 so that the guide passage 54 through the opening 41 and the inside of the cold air generating chamber 3 Prevent air movement between spaces.

The mounting member 320 is provided as a heat insulating member to prevent heat exchange between the cold air generating chamber 3 and the inner space of the auxiliary storage 200.

The heat dissipating member 340 is provided behind the mounting member 320 and the thermoelectric device 310 and protrudes toward the cool air generating chamber 3 to cool the refrigerant pipe 31a of the evaporator 31, So as to perform a heat radiating action on the air in the evaporator (31) and the cool air generating chamber (3).

It is preferable that the side surface of the heat dissipating member 340 is provided with an insertion hole 341 through which the refrigerant pipe of the evaporator 31 can be inserted and fixed.

The mounting member 320 on which the thermoelectric element 310 is mounted is fixed to the partition wall 4 (see FIG. 2).

The phase cooler 330 is composed of a plate portion 331 and a plurality of linear pins 332 formed on the plate portion 331. A predetermined gap is formed between the pin 332 and the pin 332 to allow air to flow and exchange heat with the pin 332 during the flow.

However, the shape of the pin 332 is not limited thereto, and various shapes are possible.

The mounting member 320 is provided on the rear side of the cooling member 330 and the mounting hole 321 is formed in the mounting member 320. The thermoelectric element 310 is disposed in the mounting hole 321 do.

However, only the thermoelectric element 310 can be interviewed with the cooling member without the mounting member 320.

The thermoelectric module is formed in the form of a module in which N and P type thermocouples are electrically connected in series and thermally connected in parallel.

When the DC current is applied, a temperature difference occurs on both sides of the module due to the thermoelectric effect. This refers to a solid state heat pump that utilizes the cooling effect typically exhibited by the Peltier phenomenon.

This is the next generation environmentally friendly cooling system that moves away from the existing cooling system that operates the compressor to circulate the refrigerant. It can cool and heat easily anywhere through switching the electrode, so that the object at room temperature can be cooled And can be maintained at a constant temperature through heating.

The temperature of the heat absorbing portion (cooling portion) can be lowered as the temperature of the heat dissipating portion is lowered. Therefore, when the temperature of the heat dissipating portion is exposed to an ambient temperature of about -30 캜 as in the present invention, This can be done.

The reason for placing the mounting member 320 is that the thermoelectric element 320 is formed to be smaller than the size of the cooling member 330 or the heat dissipating member 340. Therefore, the cooling member 330 or the heat dissipating member 340 So that the cooling device 300 can be easily coupled with the mounting member 320.

In addition, by installing the mounting member 320, it is possible to prevent direct heat exchange between the cooling member 330 and the heat dissipating member 340 and to prevent heat exchange between the cold generating room 3 and the auxiliary storage 200 do.

For this purpose, the mounting member 320 is preferably made of a heat insulating material.

The reason why the size of the heat dissipating member 340 or the cooling member 330 is larger than the size of the thermoelectric element 310 is that the heat dissipating member 340 or the cooling member 330, So that the heat or cool air that has moved to the cooler generating chamber 3 where the evaporator 31 is installed can be more effectively transmitted to the inner space of the guide portion 5 and the cooler generating chamber 3 where the evaporator 31 is installed.

A connector (not shown) may be connected to one side of the thermoelectric element 310 so that electric power may be supplied thereto. The connector may be directly connected to the thermoelectric element 310, 320, respectively.

The heat dissipating member 340 is also disposed in a plate shape and is preferably made of a material having good thermal conductivity such as aluminum or copper for heat transfer.

The heat dissipating member 340 interacts with the thermoelectric device 310 to transfer heat received from the thermoelectric device 310 to the evaporator 31 and the cool air generation chamber 3.

As described above, the insertion hole 341 through which the refrigerant pipe of the evaporator 3 is inserted can be formed on the side surface of the heat dissipating member 340.

The cooling fan 330 is coupled to the cooling fan 330 through a coupling member 360 such as a screw through which the ventilation fan unit 350, the heat dissipation member 340, the mounting member 320, The cooling device 300 is constructed.

Fastening holes 333, 343, and 353 are formed in the heat dissipating member 340, the mounting member 320, and the cooling member 330, respectively, in order to engage the fastening members 360.

If the thermoelectric element 310 is directly connected to the heat radiating member 340 and the cooling member 330 without the mounting member 320, the thermoelectric element 310 may be formed with the fastening hole.

On the other hand, the collecting part 6 is provided below the guide part 5.

As described above, the recovery unit 6 is constituted by a recovery duct 67, a recovery inlet 61 is provided at one side of the recovery unit 6, and a recovery and discharge port 62 is provided at the other side .

The opening / closing device 63 is provided in the recovery inlet 61.

The collecting part 6 is connected to the partition wall 4 while being insertable into the second through hole 224 of the drawer 220.

Therefore, the air of the drawer 220 can be moved to the cool air generation chamber 3 by the recovery unit 6.

FIGS. 4 to 5 show various arrangements between the cool air inlet 51 and the cooling device 300.

4 (a) to 4 (c), the cool air inflow port 51 is provided on the upper portion of the guide passage 54, and the cooling device 300 is installed in the guide passage 54. [ .

The cool air inlet 51 is provided at an upper portion of the cooling device 300 and the cool air inlet 51 is disposed at a predetermined distance from the cooling device 300.

4 (b) is slightly smaller than that of FIG. 4 (a), and in the case of FIG. 4 (c), the cool air inlet 51 has a center portion thereof formed on the partition wall 4 And both sides are open.

The reason for having such a variety of configurations is that various arrangements in the main body of the refrigerator are taken into consideration.

5 (a) to 5 (c), the cool air inlet port 51 is provided at an upper portion of the guide passage 54, and the cooling device 300 is provided inside the guide passage 54.

The cool air inlet 51 is provided at an upper portion of the cooling device 300, but the cool air inlet 51 is disposed directly above the cooling device 300.

5 (b), the height of the cold air inlet 51 is slightly smaller than that of FIG. 5 (a). In the case of FIG. 5 (c) And both sides are open.

The reason for having such a variety of configurations is that various arrangements in the main body of the refrigerator are taken into consideration.

In the case of FIG. 4, the cooling device 300 and the cold air inlet 51 are spaced apart from each other. In the case of FIG. 5, there is no such a spacing arrangement. In the case where the height of the refrigerator is relatively large, And when the height of the refrigerator is relatively small, the structure of Fig. 5 can be applied.

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

As shown in FIG. 6, when the refrigerant flows into the evaporator 31 by the flow of the refrigerant, the air in the cold generating room 3 is cooled by heat exchange with the evaporator 31.

The air exchanged with the evaporator 31 is moved toward the storage compartment 2 by a blowing fan 32 (see FIG. 1) of the cold air generating chamber 3.

Meanwhile, when electric power is supplied to the thermoelectric element 310 of the cooling device 300, the cooling part of the thermoelectric element 310 performs a cooling action to maintain a low temperature (about -60 ° C or so) In the heat dissipation portion of the element 310, a heat radiation function is performed, and a temperature (about -30 DEG C) is maintained at a higher temperature than the cooling portion.

The cooling unit cools the cooling member 330. The blowing fan unit 350 operates to suck air in the cool room 3 to pass through the cool air inlet 51, And moves in the direction of the member 330.

The blowing fan unit 350 performs an operation of drawing air from the cold air generating chamber 3.

Accordingly, the air in the cold air generating chamber 3 is moved to the cooling member 330 by the operation of the blowing fan unit 350 to be cooled by heat exchange with the cooling member 33, and then the drawer 220 ).

Specifically, the air introduced into the cooling member 330 undergoes heat exchange with the cooling member 330 and falls to a temperature at which the temperature is close to the surface temperature of the cooling member 330.

The air is then discharged from the cooling member 330 by the blowing fan unit 350 and then flows into the auxiliary storage 200 after passing through the blowing fan unit 350.

The air flowing into the cooling member 330 passes through the cooling member 330 and then flows to the blowing fan unit 350 and is discharged to the front of the blowing fan unit 350.

Then, the discharged air flows into the auxiliary storage chamber 200 and then flows into the recovery unit 6, and then is recovered into the cool air generation chamber 3.

The cooling water is cooled by the evaporator 31 and then flows through the cool air inlet port 51 to be introduced into the guide unit 5 and then cooled by the cooling member 330, Lt; / RTI >

The air circulates between the auxiliary storage 200 and the cool air generation chamber 3 in a state of being communicated between the auxiliary storage 200 and the cool air generation chamber 3, It is possible to cool the inside of the auxiliary storage chamber 200 to a cryogenic temperature and to cool the inside of the auxiliary storage chamber 200 quickly.

Particularly, since the heat dissipating member 340 connected to the heat dissipating unit of the thermoelectric element 310 dissipates heat to the cool air generating chamber 3 and the evaporator 31, The temperature of the cooling member 330 connected to the cooling air generating chamber 3 and the evaporator 31 can be significantly lowered.

5: guide unit 6:
51: cold air inlet 52: cold air outlet
53: opening / closing device 54:
55: rib 56: cover
57: cold air discharge duct 61: recycling inlet
62: rotatable discharge port 63: opening / closing device
200: auxiliary storage room 210: housing
220: drawer 300: cooling device
310: thermoelectric element 320: mounting member
330: cooling member 340: heat dissipating member
350: blowing fan unit

Claims (12)

A main body having a storage chamber;
A door that opens and closes the storage room;
A cold air generating chamber disposed in the main body;
An evaporator including a refrigerant pipe and provided in the cold air generating chamber;
An auxiliary storage chamber provided in the storage chamber and formed at a lower temperature than the storage chamber, the auxiliary storage chamber being located in front of the cool air generation chamber;
A drawer disposed in the auxiliary storage room;
A cold air inlet connecting the auxiliary storage room and the cold air generating room; And
And a cooling device for allowing an internal temperature of the auxiliary storage chamber to be lower than that of the storage chamber,
The cooling device includes:
A heat dissipating member connected to the refrigerant pipe of the evaporator to transmit heat to the evaporator,
A thermoelectric element including a heat dissipation unit that is in surface contact with the heat dissipation member to transmit heat to the heat dissipation member when current is supplied, and a heat absorption unit that is positioned on the opposite side of the heat dissipation unit;
And a cooling member which is in contact with the heat absorbing portion of the thermoelectric element,
Wherein the air cooled by the evaporator disposed in the cold air generating chamber passes through the cold air inlet and is secondarily cooled by the cooling member and discharged into the drawer. The method according to claim 1,
Wherein the cold air inlet is spaced apart from the cooling device. The method according to claim 1,
Further comprising a guide passage provided between the cool air inlet and the auxiliary storage room for guiding the movement of air from the cool air inlet toward the auxiliary storage room,
And the cooling member is disposed in the guide passage. The method of claim 3,
Further comprising a blowing fan unit provided in the guide passage for guiding air passing through the cooling member into the auxiliary storage room. 5. The method of claim 4,
Further comprising a cold air discharge port for guiding air in the guide passage to be discharged to the auxiliary storage room,
Wherein the blowing fan unit is provided adjacent to the cold air discharge opening,
And the cooling member is provided adjacent to the cold air inlet. The method according to claim 1,
Wherein an area of at least one of the cooling member and the heat radiation member is larger than an area of the thermoelectric element. The method according to claim 1,
And a guide portion provided with the cooling member and positioned adjacent to the auxiliary storage room for guiding the cool air in the cool-generated room to the auxiliary storage room,
The guide portion includes a cold air discharge port and a cold air inlet for allowing air in the inner space of the guide portion to move to the auxiliary storage chamber,
Wherein the auxiliary storage chamber and the cold air generating chamber are communicated by the guide portion so that the cool air is circulated in the auxiliary storage chamber, the cold air generating chamber, and the guide portion, Wherein the refrigerator is cooled. 8. The method of claim 7,
Further comprising a recovery unit having a recovery inlet and a recovery and discharge port so that the cold air in the auxiliary storage chamber can be recovered to the cold air generation chamber,
The air in the drawer is guided to the recovery section through the recovery inlet and then guided from the recovery section to the cold air generation chamber through the recovery and discharge port,
Wherein air is circulated between the auxiliary storage room and the cold air generating room to cool the inside of the auxiliary storage room to a cryogenic temperature and to cool the inside of the auxiliary storage room quickly.
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