KR20060039168A - Heat exchange structure for refrigerator - Google Patents

Abstract

The present invention relates to a refrigerator in which the air inside the freezer compartment and / or the refrigerating compartment is heat exchanged with an evaporator installed in the freezer compartment and the inner wall of the refrigerating compartment, and then the air is naturally convection. And / or relates to a heat exchange structure of a refrigerator for increasing the heat exchange area on the inner wall of the refrigerating chamber to improve the heat exchange efficiency.

Refrigerator, freezer, fridge, inner case, outer case, evaporator, fin

Description

Heat exchange structure of the refrigerator {HEAT EXCHANGE STRUCTURE FOR REFRIGERATOR}             

1 is a side cross-sectional view showing a refrigerator of a direct cooling method according to the prior art,

2 and 3 are a side cross-sectional view and a planar cross-sectional view showing a first embodiment of a direct-cooling refrigerator according to the present invention,

4 is a front view of the refrigerator main body of the refrigerator of FIGS. 2 and 3;

5 and 6 are a side cross-sectional view and a planar cross-sectional view showing a second embodiment of the direct-cooling refrigerator according to the present invention,

7 is a front view of the refrigerator main body of the refrigerator of FIGS. 5 and 6;

8 and 9 are a side cross-sectional view and a planar cross-sectional view showing a third embodiment of the direct-cooling refrigerator according to the present invention,

10 is a front view of the refrigerator main body of the refrigerator of FIGS. 8 and 9;

11 and 12 are a side cross-sectional view and a planar cross-sectional view showing a fourth embodiment of the direct-cooling refrigerator according to the present invention,

FIG. 13 is a front view of the refrigerator main body of the refrigerator of FIGS. 11 and 12;

14 and 15 are a side cross-sectional view and a planar cross-sectional view showing a fifth embodiment of a direct-cooling refrigerator according to the present invention;

FIG. 16 is a front view of the refrigerator main body of the refrigerator of FIGS. 14 and 15.

<Explanation of symbols on main parts of the drawings>

52: refrigerator body 52a: outer case

52b: Inner case with freezer compartment 52c: Inner case with cold compartment

52h: hole 60a: freezer compartment evaporator

60b: refrigerator compartment side evaporator 72: fin

74h: main part

The present invention relates to a refrigerator in which the air inside the freezer compartment and / or the refrigerating compartment is heat-exchanged with an evaporator installed in the freezer compartment and the inner wall of the refrigerating compartment, and then the air is naturally convection. And / or relates to a heat exchange structure of the refrigerator to improve the heat exchange efficiency by widening the heat exchange area on the inner wall of the refrigerator compartment.

Generally, a refrigerator is divided into a direct cooling method and an indirect cooling method according to a cooling method. A direct cooling refrigerator is configured such that an evaporator is installed on the inner wall of a freezer compartment and a refrigerating compartment. And while the refrigerating chamber is cooled, the refrigerator of the indirect cooling method is configured to be installed on the inner wall of the freezer compartment at the same time the fan is installed on the cold air circulation passage, while the cold air generated around the evaporator is forcedly blown by the fan The freezer compartment and the refrigerating compartment are cooled.

1 is a side cross-sectional view showing a refrigerator of a direct cooling method according to the prior art.

As shown in FIG. 1, the refrigerator of the direct cooling method according to the related art has a front surface of the refrigerator main body 2 being opened, and a freezing compartment F and a refrigerating chamber R are formed at upper and lower sides thereof, and the refrigerator The freezer compartment door 4a and the refrigerating compartment door 4b are installed to be opened and closed at the front of the main body 2, and a refrigerating cycle including the evaporators 10a and 10b is built into the inside of the refrigerator main body 2. Evaporators 10a and 10b are installed to be in close contact with the inner walls of the freezer compartment F and the refrigerating compartment R to directly cool the air inside the freezer compartment F and the refrigerating compartment R. To be maintained.

Here, the refrigerator main body 2 is formed so that the heat insulating material 12 is foam-molded between the outer case 2a forming the exterior and the inner cases 2b and 2c therein, and the freezer compartment inner case 2b. And the evaporators 10a and 10b are respectively in contact with the inner side of the refrigerating chamber side 2c.

Next, the evaporators 10a and 10b each include a freezer compartment side evaporator 10a and a refrigerator compartment side evaporator 10b which are in contact with the freezer compartment inner case 2b and the refrigerating compartment side inner case 2c, respectively. The freezer compartment side evaporator (10a) is configured to be larger than the refrigerator compartment side evaporator (10b), the evaporator (10a, 10b) is a compressor (6), the condenser by the refrigerant pipe so that the refrigerant can be circulated (8), connected with a capillary tube (not shown) to form a refrigeration cycle.

Of course, the drain pipe 14 is installed at the lower side of the refrigerating chamber R so that the frost generated on the surface of the inner case 2c of the refrigerating chamber is melted or guides to the outside even when condensate flows down. The drain pan 16 is installed to collect the condensate collected along the side.

In addition, one side of the evaporator (10a, 10b) is equipped with a temperature sensor (not shown) to measure the freezer compartment temperature and the refrigerator compartment temperature at the same time the control unit (not shown) is mounted on one side of the refrigerator main body 2 of the temperature sensor The operation of the compressor 6 is adjusted by comparing the measured value with a preset input value.

Accordingly, as the compressor 6 is operated, refrigerant is compressed, condensed, expanded, and evaporated while passing through the compressor 6, the condenser 8, the capillary tube, and the evaporators 10a and 10b, and the evaporators 10a and 10b. The low-temperature low-pressure refrigerant gas passing through the heat exchange action with the air in the freezing chamber (F) and the refrigerating chamber (R) to generate cold air, such cold air by natural convection, the freezing chamber (F) and the refrigerating chamber (R). Cooling).

However, in the conventional refrigerator, since the evaporators 10a and 10b are installed inside the freezer compartment and the refrigerating compartment side inner cases 2b and 2c, the freezer compartment and the refrigerating compartment side inner cases 2b and 2c are the evaporators 10a and 10b. It acts as a heat transfer resistance between the air in the freezer compartment (F) and the refrigerating chamber (R) to reduce the heat transfer efficiency and heat transfer amount, thereby increasing the evaporator (10a, 10b) unnecessarily large to maintain the cooling performance There is a problem that the cost is increased.

The present invention has been made to solve the above problems of the prior art, it is not only to improve the heat transfer performance by reducing the heat transfer resistance between the air of the freezer compartment and / or the refrigerating chamber and the evaporator, but also to increase the heat transfer area and to increase the size of the evaporator. The purpose is to provide a heat exchange structure of the refrigerator can be reduced.

One example of a heat exchange structure of a refrigerator according to the present invention for solving the above problems is a refrigerator body insulated with an insulating material between an inner case and an outer case so that a freezer compartment and a refrigerating compartment are formed therein, and the freezer compartment and / or refrigeration An evaporator embedded in contact with the inner inner case and a refrigerating cycle built in one side of the refrigerator main body to be connected to the inner inner case to cool the air in the freezer compartment and the refrigerating compartment through heat exchange with the refrigerant in the evaporator side, and the freezer compartment and / or the refrigerator compartment side inner It is installed to be exposed to at least one hole formed in the case is composed of an exposed portion formed integrally with the evaporator to increase the heat exchange efficiency with the air in the freezer compartment and / or the refrigerating compartment and the evaporator side refrigerant.

On the other hand, another example of the heat exchange structure of the refrigerator according to the present invention is a refrigerator main body and the freezer compartment and / or the refrigerator compartment side inner case and the freezer compartment and the outer case is formed insulated between the inner case and the outer case so that the freezer compartment and the refrigerating compartment can be formed therein An evaporator built to be in contact with the refrigerator, and a refrigeration cycle configured to be connected to one side of the refrigerator main body to cool the air in the freezer compartment and the refrigerating compartment through a heat exchange action with the refrigerant in the evaporator side, and a freezer compartment in contact with the evaporator and / or a refrigerator compartment side inner case. It is formed to be curved on one surface is composed of a plurality of uneven parts to expand the heat exchange area with the air in the freezer compartment and / or the refrigerating compartment.

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

2 and 3 are a side cross-sectional view and a planar cross-sectional view showing a first embodiment of a refrigerator of a direct cooling method according to the present invention, Figure 4 is a front view of the refrigerator main body in the refrigerator of Figs.

In the first embodiment to which the heat exchange structure of the refrigerator according to the present invention is applied, the heat insulating material 62 is formed between the outer case 52a and the inner cases 52b and 52c formed therein, as shown in FIGS. 2 to 4. ) Is foamed to form a refrigerator body 52, and a freezer compartment F and a refrigerator compartment R are formed at upper and lower sides of the inside of the refrigerator body 52, and a freezer compartment door (F) in front of the refrigerator body 52. 54a) and the refrigerating compartment door 54b are installed to be opened and closed, and evaporators 60a and 60b are installed to closely contact the freezer compartment inner case 52b and the refrigerating compartment side inner case 52c, and the refrigerating compartment R side The plurality of fins 72 integrally formed in the evaporator 60b are installed to be exposed to the plurality of holes 52h formed in the inner case 52c surface.

Here, the evaporator (60a, 60b) is composed of a freezer compartment side evaporator (60a) and a refrigerator compartment side evaporator (60b) respectively installed in the freezer compartment (F) and the refrigerator compartment (R) side, so that the refrigerant is circulated with each other As the fins 72 are formed smaller than the freezer compartment side evaporator 60a, the fins 72 may be formed only in the refrigerator compartment side evaporator 60b to prevent the cooling performance of the refrigerator compartment side evaporator 60b from falling off, or the freezing chamber side evaporator 60b. It may be formed in both the actual evaporator 60a and the refrigerator compartment side evaporator 60b.

Of course, the evaporators 60a and 60b are connected to the compressor 56, the condenser 58, the capillary tube or the expansion valve by the refrigerant pipe, and constitute a refrigeration cycle in which the refrigerant is circulated.

At this time, the evaporator (60a, 60b) is configured so that the first plate (P1) and the flat second plate (P2) formed with the refrigerant pipe groove (H) overlap, the refrigerant is the refrigerant pipe groove of the first plate A plurality of fins 72 are formed on one surface of the second plate P2 which is circulated along the refrigerant flow path formed between the H plate and the second plate P2, and the first plate P1 does not overlap. .

In particular, the fins 72 are formed in a rectangular shape extending in the longitudinal direction at predetermined intervals in the width direction of the second plate P2, and the holes 52h are wide in the refrigerating chamber side inner case 52c. It is formed in a long shape in the longitudinal direction at a predetermined interval, the pins 72 is preferably installed long in the vertical direction in the refrigerating chamber side inner case side holes 52h to match the natural convection direction of the cold air, In order to reduce the flow resistance of the refrigerating chamber (R) in the installed state, it is more preferable that the end of the pin (72) is formed to form the same plane as the refrigerating chamber side inner case (52c).

Looking at the process in which the evaporators 60a and 60b are installed in the refrigerator body 52, the freezer compartment side evaporator 60a and the refrigerator compartment side evaporator 60b are the freezer compartment inner case 52b and the refrigerator compartment side inner. It is to be in close contact with the case 52c, the pins 72 are fitted in the refrigerating chamber-side evaporator (60b) to the holes 52h of the refrigerating chamber-side inner case, respectively, and then the back circumferential portion of the evaporator (60b) and the An adhesive tape T is attached between the inner cases 52c to seal each other, and the heat insulating material 62 is foam-molded between the outer cases 52a and the inner cases 52b and 52c.

Therefore, since the fins 72 of the evaporator are installed to be exposed to the holes 52h of the inner case in the refrigerating chamber R, the air in the refrigerating chamber R is built in the refrigerating chamber side evaporator ( In addition to heat exchange with 60b), heat exchange with the fins 72 exposed to the inner case 52c may further increase heat exchange performance.

5 and 6 are a side cross-sectional view and a planar cross-sectional view of a second embodiment of a direct cooling type refrigerator according to the present invention, and FIG. 7 is a front view of the refrigerator main body of the refrigerator of FIGS. 5 and 6.

In the second embodiment to which the heat exchange structure of the refrigerator according to the present invention is applied, the outer case 52a and the inner cases 52b and 52c inside the outer case 52a, which form an exterior as in the first embodiment as shown in FIGS. Insulation material (62) is foamed between the () to form a refrigerator body 52, the freezer compartment (F) and the refrigerator compartment (R) is formed on the upper and lower sides of the refrigerator body 52, the freezer compartment side inner case ( 52b) and evaporators 60a and 60b are installed to be in close contact with the refrigerating chamber inner case 52c, and one side of the portion 60b of the evaporator has a rectangular hole 52h formed on the surface of the refrigerating chamber side inner case 52c. ) To be exposed.

Of course, the same components as those of the first embodiment of the components of the second embodiment use the same reference numerals, and the same configuration thereof will be omitted, but the specific configuration will be described in detail.

At this time, the evaporator (60a, 60b) is composed of a freezer compartment side evaporator (60a) and a refrigerator compartment side evaporator (60b) respectively installed on the freezer compartment inner case (52b) and the refrigerating compartment side inner case (52c) side, the size is relatively It is preferable that the refrigerating chamber side evaporator 60b having a low cooling capacity is installed to be exposed to the refrigerating chamber R.

In particular, the evaporator (60a, 60b) is configured so that the first plate (P1) and the flat second plate (P2) formed with a refrigerant pipe overlap, the first plate (P1) in the refrigerator compartment side evaporator (60a) One surface of the non-overlapping second plate P2 is installed to be exposed to the hole 52h of the refrigerator compartment side inner case, and the refrigerator compartment side evaporator 60b has the same size as the hole 52h of the refrigerator compartment side inner case. Formed so that the second plate P2 of the refrigerator compartment side evaporator forms the same plane as the refrigerator compartment inner case 60b so that the refrigerator compartment side evaporator 60b is exposed to the hole 52h of the refrigerator compartment side inner case. Even if installed, the flow resistance of the refrigerator compartment should not increase.

When the evaporators 60a and 60b are installed in the refrigerator main body 52, the freezer compartment side evaporator 60a and the refrigerator compartment side evaporator 60b are the freezer compartment inner case 52b and the refrigerator. In order to be in close contact with the measured inner case 52c, one surface of the second plate P2 of the refrigerating compartment side evaporator is fitted into the hole 52h of the refrigerating compartment side inner case, and then a rear circumferential part of the evaporators 60a and 60b. The adhesive tape T is attached between the inner cases 52b and 52c to seal each other, and the heat insulating material 62 is foamed between the outer case 52a and the inner cases 52b and 52c.

Accordingly, since one surface of the second plate P2 of the evaporator is installed in the refrigerating chamber R to be exposed to the hole 52h of the inner case, the air of the refrigerating chamber R is exposed to the hole 52h of the inner case. Heat exchanged directly with one surface of the second plate P2 may further increase heat exchange performance.

8 and 9 are side cross-sectional views and planar cross-sectional views illustrating a third embodiment of a direct cooling type refrigerator according to the present invention, and FIG. 10 is a front view of the refrigerator main body of the refrigerator of FIGS. 8 and 9.

The third embodiment to which the heat exchange structure of the refrigerator according to the present invention is applied is configured in the same manner as the second embodiment as shown in FIGS. 8 to 10, and the refrigerating chamber side evaporator 60b of the refrigerator compartment side inner case It is formed larger than the hole 52h, and the peripheral part of the refrigerator compartment side evaporator 60b and the refrigerator compartment side in the state where the peripheral part of the refrigerator compartment side evaporator 60b overlaps inside the hole 52h of the refrigerator compartment side inner case. After the adhesive tape T is attached and sealed between the inner cases 52c, the heat insulating material 62 is foam-molded between the outer cases 52a and the inner cases 52b and 52c.

At this time, since the refrigerating chamber side evaporator 60b is formed larger than the holes 52h of the refrigerating chamber side inner case and is attached to each other in an overlapping state, the adhesive tape T is attached to the periphery of the refrigerating chamber side inner case 52h. ) Is formed between the outer case (52a) and the inner case (52b, 52c), even if the insulation 62 is foamed in a high pressure state, the insulation 62 is a hole in the refrigerator compartment side evaporator (60b) and the refrigerator compartment side inner case Ejection between 52h can be prevented.

In addition, not only the installation position of the refrigerating chamber side evaporator 60b can be accurately displayed, but also the refrigerating chamber side evaporator 60b to further increase the sealing effect between the refrigerating chamber side inner case 52c and the refrigerating chamber side evaporator 60b. It may be configured to be seated on the periphery of the hole (52h) of the inner case, for this purpose it can be configured to be formed stepped so that the periphery of the hole of the refrigerator compartment side inner case (52h) protrudes from the refrigerator compartment side inner case (52c). have.

11 and 12 are a side cross-sectional view and a planar cross-sectional view showing a fourth embodiment of a direct cooling type refrigerator according to the present invention, and FIG. 13 is a front view showing the refrigerator body in the refrigerator of FIGS. 11 and 12.

In the fourth embodiment to which the heat exchange structure of the refrigerator according to the present invention is applied, the heat insulating material 62 is formed between the outer case 52a forming the exterior and the inner cases 52b and 52c therein, as shown in FIGS. 11 to 13. ) Is foamed to form a refrigerator body 52, and a freezer compartment F and a refrigerator compartment R are formed above and below the refrigerator body 52, and the freezer compartment inner case 52b and the refrigerator compartment side inner are formed. Evaporators 60a and 60b are installed to be in close contact with the case 52c, and one surface of a part of the evaporator is installed to be exposed to a plurality of holes 52h formed on the surface of the inner case 52c of the refrigerating compartment.

Here, the evaporator (60a, 60b) is also made of the freezer compartment side evaporator (60a) and the refrigerating chamber side evaporator (60b) which are respectively installed to be in close contact with the freezer compartment inner case (52b) and the refrigerator compartment side inner case (52c), One side of the refrigerating compartment side evaporator 60b having a relatively small size and low cooling ability is installed to be exposed to the holes 52h of the refrigerating compartment side inner case.

In particular, the evaporator (60a, 60b) is configured to overlap the first plate (P1) and the flat second plate (P2) formed with the refrigerant pipe groove (H), the first plate (P1) does not overlap One surface of the two plates P2 is installed to be in close contact with the freezer compartment inner case 52b and the refrigerating compartment side inner case 52c, respectively, and the plurality of plates P2 are spaced in a width and length direction at predetermined intervals. Holes 52h are formed.

At this time, the refrigerator compartment side evaporator (60b) is in close contact with the inside of the refrigerator compartment inner case (52c) so that the circumferential portion is sealed to the back of the refrigerator compartment side inner case (52c) by an adhesive tape (T), It is preferable that the heat insulating material 62 is foam-molded between the outer case 52a and the inner cases 52b and 52c.

Of course, the above configuration may be applied to a refrigerator of a direct cooling method, but may also be applied to a refrigerator capable of selectively implementing an indirect cooling method by further adding a duct and a blower, and in this case, the refrigerator compartment side evaporator. The hole 52h formed in the refrigerating chamber side inner case in order to increase the heat transfer efficiency at 60b has an effect of further increasing the heat transfer efficiency by forming a predetermined vortex in the forced air.

14 and 15 are side cross-sectional views and planar cross-sectional views illustrating a fifth embodiment of a direct cooling type refrigerator according to the present invention, and FIG. 16 is a front view of the refrigerator main body of the refrigerator of FIGS. 14 and 15.

In the fifth embodiment to which the heat exchange structure of the refrigerator according to the present invention is applied, the heat insulating material 62 is formed between the outer case 52a forming the exterior and the inner cases 52b and 52c therein, as shown in FIGS. 14 to 16. ) Is foamed to form a refrigerator body 52, and a freezer compartment F and a refrigerator compartment R are formed on the refrigerator body 52 above and below, and the inner case 52b and the refrigerator compartment side inner case of the freezer compartment side. Evaporators 60a and 60b are installed to closely contact 52c, and a plurality of recesses 74h are formed on the inner surface of the refrigerating chamber side inner case 52c to which the evaporator 60b is in close contact with the evaporators 60a and 60b. And to enlarge the heat exchange area of the air.

Of course, the evaporator (60a, 60b) is connected to the compressor 56, the condenser 58, the capillary tube or the electronic expansion valve by the refrigerant pipe so that the refrigerant can be circulated to form a refrigeration cycle, the freezer compartment inner case ( 52b) and a refrigerator compartment side evaporator 60a and a refrigerator compartment side evaporator 60b so as to be in contact with the refrigerator compartment side inner case 52c, respectively, and are connected to allow refrigerants to circulate with each other.

Here, the freezer compartment (F) is to maintain a lower temperature than the refrigerator compartment (R), so the freezer compartment side evaporator (60a) is formed larger than the refrigerator compartment side evaporator (60b), the refrigerator compartment side In addition to reducing the size of the evaporator (60b), even if the inner case (52c) in contact with the refrigerator compartment side evaporator (60b) is limited in space to increase the contact area of the refrigerator compartment side inner case in contact with the cold to maintain a predetermined heat exchange performance Preferably, a plurality of recesses 74h are formed on the inner surface of the refrigerating chamber side inner case 52c to which the refrigerating chamber side evaporator 60b is in contact.

At this time, the low-temperature air in the refrigerating chamber (R) is moved to the lower side at the same time as the high-temperature air is moved to the upper side so as to form a recess portion (74h) long in the longitudinal direction of the flow direction of the cold air to reduce the flow resistance Preferably, the recessed portion 74h is more preferably formed in a plurality with a predetermined interval in the width direction, the cross-sectional shape may be formed in a circular arc or other various shapes.

Of course, the inner surface of the refrigerating chamber side inner case 52c may be configured such that a protruding iron portion is formed in place of the recess portion 74h.

As described above, since a plurality of uneven parts are formed on the surface of the refrigerating chamber side inner case 52c to which the refrigerating chamber side evaporator 60b contacts, the contact area of the refrigerating chamber R air per unit area of the refrigerating chamber side evaporator 60b is increased. It can be further increased to improve heat exchange performance.

In the above, the present invention has been described in detail with reference to the refrigerator of the direct cooling method based on an embodiment of the present invention and the accompanying drawings as an example, it is possible to apply to the refrigerator of the indirect cooling method and other refrigerators as well as the respective implementations It is also possible to apply a combination of examples. That is, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

The heat exchange structure of the refrigerator according to the present invention configured as described above is configured to expose a part of the evaporator to the inner case even if the evaporator is directly in contact with the inner case of the freezer compartment and / or the refrigerating compartment to reduce the heat transfer resistance, or the uneven portion of the inner case. Since the heat exchange area is formed to be wider, the heat transfer efficiency and heat transfer performance can be improved, and the evaporator size can be reduced, thereby reducing the production cost.

Claims (12)

A refrigerator main body insulated with an insulating material between the inner case and the outer case so that the freezer compartment and the refrigerating compartment may be formed therein; An evaporator embedded in contact with the freezer compartment and / or an inner case of the refrigerating compartment and a refrigerating cycle which is built in one side of the refrigerator main body to be connected to the freezer compartment and cools the air in the freezer compartment and the refrigerating compartment through heat exchange with the refrigerant in the evaporator side; An exposed portion formed integrally with the evaporator so as to be exposed to at least one or more holes formed in the freezer compartment and / or the inner side of the refrigerating compartment to improve heat exchange efficiency with air in the freezer compartment and / or the refrigerating compartment. Heat exchange structure of the refrigerator characterized by the above-mentioned. The method of claim 1, The evaporator is configured to overlap the first plate and the second flat plate formed with a groove for the refrigerant pipe, and the exposed portion is a plurality of fins formed on one surface of the second plate does not overlap the second plate Heat exchange structure. The method of claim 2, The fins are formed long in the longitudinal direction at a predetermined interval in the width direction of the evaporator, the heat exchange structure of the refrigerator, characterized in that installed in the freezing chamber and / or the refrigerating chamber long in the vertical direction. The method of claim 3, wherein Ends of the fins, the heat exchange structure of the refrigerator, characterized in that formed in the same plane as the freezer compartment and / or the inner side of the refrigerator compartment. The method according to any one of claims 2 to 4, The evaporator attaches and seals an adhesive tape between the inner circumference of the back of the evaporator and the inner case while the fins are fitted in the holes formed in the freezer compartment and / or the refrigerator compartment side inner case, and then between the inner case and the outer case. Heat exchange structure of the refrigerator, characterized in that the insulation is foam molded. The method of claim 1, The evaporator is configured to overlap the first plate and the second flat plate formed with a groove for the refrigerant pipe, the exposed portion is a heat exchange structure of the refrigerator, characterized in that the first plate does not overlap in the second plate. The method of claim 6, The second plate of the evaporator is a heat exchange structure of the refrigerator, characterized in that formed on the same plane as the freezer compartment and / or the inner side of the refrigerator compartment. The method according to claim 6 or 7, The holes of the evaporator and the inner case are formed in the same size, and the adhesive tape is sealed between the inner circumference of the back of the evaporator and the inner case while the evaporator is fitted into the holes of the inner case, and then sealed. Heat exchange structure of the refrigerator, characterized in that the insulating material is foamed between the outer case. The method of claim 6, The hole of the inner case is formed smaller than the evaporator, and the evaporator attaches and seals an adhesive tape between the inner circumference of the back of the evaporator and the inner case in a state where the evaporator is overlapped with the hole circumference of the inner case, and then the inner case Heat exchange structure of the refrigerator, characterized in that the insulating material is foam molded between the outer case. The method of claim 9, The heat exchange structure of the refrigerator, characterized in that the periphery of the hole of the inner case is formed stepped so as to protrude from the inner case so that the peripheral portion of the evaporator can be seated. A refrigerator main body insulated with an insulating material between the inner case and the outer case so that the freezer compartment and the refrigerating compartment may be formed therein; An evaporator embedded in contact with the freezer compartment and / or the inner case of the refrigerating compartment, and a refrigerating cycle connected to the freezer compartment and connected to one side of the refrigerator main body to cool the air inside the freezer compartment and the refrigerating compartment through heat exchange with the refrigerant in the evaporator side; And a plurality of concave-convex portions formed on one surface of the inner case of the freezer compartment and / or the refrigerating compartment side in contact with the evaporator to widen the heat exchange area with air in the freezer compartment and / or the refrigerating compartment. The method of claim 11, The uneven parts are heat exchange structure of the refrigerator, characterized in that formed in the freezer compartment and / or the inner case of the refrigerating compartment long in the vertical direction at a predetermined interval in the width direction.

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